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HD20 Schematics required

However, wading through that *is* going to be a formidable task unless someone here is experienced with Z8 assembly language. (The Z8 is a "weird" chip in some respects.) I'll admit it's completely Greek to me.
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I am fluent in HC12 assembly language, and this appears at least somewhat similar. I agree it is formidable, it is quite a bit of code and there seems to be quite a bit of interrupt functionality which gets confusing really fast.

All attempts to locate a hard drive icon failed.
Click to expand...
Assuming the IWM-UART theory is correct, and assuming the IWM requires that data be encoded to limit the number of consecutive "0" bits it sends/receives across the wire (IE, it requires things to be nibble-encoded) it's possible that the icon is stored pre-encoded so it can just be shoveled straight out the wire when the Mac asks for it. If it were nibble-encoded it would pretty much look like gibberish unless you knew its starting address and even then you'd have to "de-nibble" it.
Click to expand...
I hadn't thought about it like that, but that makes a lot of sense. I was under the impression that the IWM did all of the nibbling and denibbling, and by the time it got to the Z8 it was in normal form, but I really don't know. It will be useful to see exactly where the RD and WR lines go, and exactly where the nibbling/denibbling processes occur.

I mentioned a while ago that the microcontroller prototype board that I want to use for logic analyzing is loaned out. I have decided to order up a faster one that has an SD card slot and let that person keep the one I loaned, so for now I'll just stick with continuity probing. I did manage to wire up a 20-pin header extension cable that will allow me to snoop the floppy port interface. It is a cable that passes straight through and has an area allowing me to tap each line without harming any original hardware. I verified that the HD 20 does work through this cable.

 
What makes you think it's 8051 based? I haven't looked closely at the disassembled file yet, but it seemed to disassemble okay. It says Z8 on the board, but they sure could have used a different one. I'm at a bit of a loss for all the different kinds of old microprocessors out there.

I didn't work on this today until tonight. I mapped out the 2 7400 chips. It makes a very simple state machine, two JK' Flip-flops and 4 schmitt trigger NAND gates. It takes in LSTRB, CA1, and /ENBL2 from the cord and outputs the signal to the PAL /OE pin and /ENBL2 of the daisy chain port. So basically, the Mac takes care of multiplexing the HD 20 with a daisychained floppy drive, and this circuitry makes sure the HD 20 is only active on the floppy port when it is its turn.

I'll make sure I have all of the connections right and come up with a nice state diagram.

 
What makes you think it's 8051 based? I haven't looked closely at the disassembled file yet, but it seemed to disassemble okay. It says Z8 on the board, but they sure could have used a different one. I'm at a bit of a loss for all the different kinds of old microprocessors out there.
Click to expand...
I would assume since the board says "Z8" it's a Z8, but if you're at all worried you're barking up the wrong tree Googling the part numbers on top of the chip should tell you what it is. I think I was actually able to discern a Zilog "Z" logo on the chip from the Flickr pictures of an HD-20 motherboard, but it wasn't high-res enough to read the actual part numbers. Even if it's obvious that it's a Z8 it might still be worth figuring out *which* Z8 it is. They sold them in various configurations with different onboard peripherals, ROMless and ROM-equipped versions, etc, etc. (There are even ones with embedded Tiny Basic interpreters.) What's in there is probably the plain-vanilla ROMless version, but it would throw a monkey wrench into things if it turned out it was actually a mask-programmed ROM model and the discrete ROM chip only contained *part* of the driver program.

Concidentally, here's a page where someone who's written a Z8 cross-assembler rhapsodizes about the Z8 and in the process explains how it's a very strange CPU design, very little like an 8051 or Motorola 68xx.

(As a side comment, I'm sort of surprised Apple didn't use a 6502 variant in it. Apple was by no means as prolific as Commodore when it came to embedding 6502s into things at the slightest provocation, but they *did* use them in the Lisa and a few Mac models as I/O controllers.)

 
I see a Z logo on the chip as well. I've played ever so slightly with PIC ASM and OMG, it's very different than I'm used to. You can't, for example, build tables directly. You must encode data tables into instructions. i.e. normally you would have a stash in memory:

03 F2 78

And in PIC, that becomes:

Load A with 03

return from subroutine

load A with F2

return from subroutine

load A with 78

return from subroutine

having a discrete subroutine jump for EACH item. Sheesh.

Anyway, I think I got some daisy chain stuff figured out. It's all asynchronous.

Circuit Diagram:

daisy1.gif.8cbe6e5fb59cf4f3f30ce741c702f36b.gif


State Diagram:

daisy2.gif.8de0141d3fa07bcaa23d9dd8b7248bfc.gif


English:

State 0,0:

/ENBL2_daisy is disabled. PAL /OE is directly controlled by /ENBL2_cord.

A positive strobe of LSTRB will move to state 1,0. Strobing CA1 or /ENBL2_cord will not change states.

State 1,0:

/ENBL2_daisy is enabled. PAL /OE is directly controlled by /ENBL2_cord, but this coincidentally changes states.

A positive strobe of /ENBL2_cord will move to state 0,0. A positive strobe of CA1 moves to state 1,1. Strobing LSTRB will not change states.

State 1,1:

/ENBL2_daisy is disabled. PAL /OE is disabled.

Strobing /ENBL2_cord will move to state 0,0. Strobing LSTRB or CA1 will not change states.

State 0,1:

This is an invalid state. It can not normally be entered unless by random chance during power up. /ENBL2_daisy is enabled and PAL /OE is disabled.

A positive strobe of LSTRB will move to state 1,0. A positive strobe of /ENBL2_cord will move to state 0,0. Strobing CA1 will not change states.

 
Other incomplete findings (There are most definitely MORE connections than listed):

PAL Pins:

1: Clock signal common to IWM pin 24 (Fclk), and Z8 pin 3.

2: [Floppy Port WR]

3: IWM Pin 8 (WRData)

4: Z8 pin 4

5: [Floppy Port CA2]

6: [Floppy Port CA1]

7: [Floppy Port CA0]

8: (nc?)

9: (nc?)

10: Gnd

11: PAL /OE

12: [Floppy Port RD] via R26. PAL pin 12 connected directly to IWM pin 22 (RDData).

13...19: (?)

20: Vcc

 
board_bottom.jpg.96c143d93f42104bfb0bdbd6b5934f8d.jpg


I should try taking a picture with a flash, that might make the traces light up better and maybe I can get a picture of the component side too.

 
All attempts to take a picture with a camera, flash or no flash, have failed. It just isn't made for detailed close-up shots like that. The picture I posted was from placing the board on my scanner, but it won't work on the component side because it doesn't lay flat on the glass.

Next up is more attention to the PAL. This may shed more light on how the floppy port interface controls work. If I can map out the PAL, and map out the IWM, I think that'll be a MAJOR step toward emulating a floppy port HD. From that point, I can snoop the signals and try to make sense of them.

I'm sorry if people have given me suggestions that I seem to be ignoring. I often times gloss over while reading lengthy posts as I begin to think about things that you said toward the beginning. If you have something important that you want to point out, please be concise or put it in bold or something, or give a summary, etc. My attention span diminishes if I'm really excited thinking about something.

 
WELL I'm a little bit tired of working on all these darned connections. It's fairly tedious and repetitive. This should at least help give us some ideas of how this weird thing works.

connections1.gif.6d5b7a195f11aa3109d3dc492a296960.gif


The "R" and "F" are used as designators for pin names. R means Rodime header, F refers to "FC", silkscreened above the big mystery chip.

 
On a big chip like that 'F' chip, I would expect somewhere between a quarter and half of the pins to be power or ground. Perhaps that was not true back when the HD20 was made. That may have only come about after the geometries got smaller.

Anyway, you might save yourself some time by getting out the ohmmeter and connecting one probe to ground and then run the other probe around the pins of the chip with the audible continuity alert active.

Then connect the stationary probe to the 5V supply and do it again.

When I was working on the pinout of the PowerSurge chipset that's what I did first to eliminate a bunch of pins. Of course, the tedium got me before I finished all of that.... I only ever managed the CPU slot, the ROM slot, Bandit and a little bit of Hammerhead and Grand Central.

 
That's some good advice Trag. I added those things to the image. There are two separate +5 supplies, one from the HD20 and one from the floppy port. The ground of both +5s is common, but the ground of +12 for the Rodime is not a common ground.

 
Ran across the list below while looking at something else. It might be interesting to see where the ROM on the HD20 falls in the numbering scheme, if it does. Note the entries for Widget ROMs (and mention of a Z8 piggy back) near the center of the list:

==================================

This is my Apple-ROM collection:

341-0001-00 Integer BASIC E0 1978

341-0002-00 Integer BASIC E8 1978

341-0003-00 Integer BASIC F0 1978

341-0004-00 Original Monitor (F8) 1978

341-0009 13 Sector ROM

341-0010 13 Sector ROM

341-0011(00) Applesoft BASIC D0 ©1978 1980

341-0012(00) Applesoft BASIC D8 ©1978 1980

341-0013(00) Applesoft BASIC E0 ©1978 1980

341-0014(00) Applesoft BASIC E8 ©1978 1980

341-0015(00) Applesoft BASIC F0 ©1978 1980

341-0016-00 Programmer's Aid #1 (D0) 1978

341-0020(00) Autostart Monitor (F8) ©1978 1980

341-0027 16 Sector

341-0027-A Disk II P5A 1981

341-0028 16 Sector

341-0036 ][plus character ROM

341-0065-A Super Serial Card 1983

341-0066-A Profile 5MB e 10MB (GAL)

341-0067-A Profile 5MB e 10MB (GAL)

341-0068-A Profile 5MB e 10MB (GAL)

341-0080-B ProFile 5MB RW-Z8 1981

341-0112A revision A firmware Apple SCSI card

341-0112B revision B firmware Apple SCSI card

341-011-D0 Applesoft BASIC D0

341-0124-A IIgs Keyboard i8048

341-012-D8 Applesoft BASIC D8

341-013-E0 Applesoft BASIC E0

341-014-E8 Applesoft BASIC E8

341-0151-A IIe Keyboard ROM deutsch/usa 1982

341-015-F0 Applesoft BASIC F0

341-0161-A IIe Video ROM deutsch/usa 1982

341-0171-A Profile 5MB

341-0175-F Lisa 2 Boot ROM Hi (old)

341-0175-H Lisa 2 Boot ROM Hi

341-0176-F Lisa 2 Boot ROM Lo (old)

341-0176-H Lisa 2 Boot ROM Lo

341-0193-A Lisa Parallel Interface Card

341-020-F8 Autostart Monitor

341-0220 Mac 128-512 (400k drive support)

341-0221 Mac 128-512 (400k drive support)

341-0265-A //e Enh //c+ VideoROM USA 1983

341-0281-D Lisa 2/10 Disk ROM

341-0287 Profile 10MB

341-0288-A Widget-10 Controller (677-0108) Z8 Piggyback

341-0289-D Widget-10 Controller

341-0290-B Lisa 2/5 Disk ROM

341-0303-A //e Enh EF EPROM 1984

341-0341-A Mac Plus old

341-0342-A Mac Plus old

341-0341-A Mac Plus medium

341-0342-B Mac Plus medium

341-0341-B Mac Plus new

341-0342-C Mac Plus new

341-0346 Mac XL Boot ROM Lo

341-0347 Mac XL Boot ROM Hi

341-0437-A revision C firmware Apple SCSI card

341-0625-A //c+ CF ROM 1988

341-0737 IIgs ROM 3 FC-FD 1989

341-0748 IIgs ROM 3 FE-FF 1989

341-8003-A Sun Mac XL Disk ROM for 800k drives (from 2/5)

341-8003-B Sun Mac XL Disk ROM for 800k drives (from Sun XL)

341-8003-C Sun Mac XL Disk ROM for 800k drives (from Goodwill XL)

341-8007 Sun SCSI Card

342-0028-A Disk II P6A 1981

342-0033-A //c Monitor ROM $00 (3,5" disk) 1985

342-0033-B //c Monitor ROM $00 /3,5" disk) 1985

342-0077-B IIgs ROM-01 1987

342-0132 //c Keyboard ROM

342-0132-B //e Kbd ROM USA 1985

342-0132-D //e //eEnh //c KBD ROM USA/Dvorak 1984

342-0133-A //e Video ROM 1982

342-0134-A IIe EF ROM 1982

342-0135-A IIe CD ROM 1982

342-0135-B IIe CD ROM 1982

342-0154 IIe Keyboard ROM ITA

342-0164 IIe VIDEO ROM ITA

342-0272-A //c Monitor ROM $FF 1983

342-0275 //c Character Generator deutsch 1983

342-0275-A //c //eEnh VideoROM Deutsch 1983

342-0276 IIe Enh VIDEO ROM ITA

342-0303-A //e Enh EF ROM 1984

342-0304-A //e Enh CD ROM 1984

342-0329 IIe Enh Keyboard ITA

342-0341-A Mac Plus ROM hi 1985

342-0341-B Mac Plus ROM lo 1985

342-0349-A //e Enh CF ROM 1985

342-0349-B //e Enh CF ROM 1985

342-0372-A //e Enh Kbd ROM Deutsch/USA 1985

=============================================

 
Quick Update

My new microcontroller prototype board came in on Friday. It is a new toy so I've been playing with it a bit.

I wrote a quick sloppy program that samples the floppy interface at about 4 kHz. From what I've read, the serial data of the HD20 runs at 500kHz, so this should be plenty overkill. I didn't make it record any timing data yet, this will slow down the sampling rate, but we'll see what we can do. I believe that I can just read the free running counter register of the microcontroller and save that alongside the data, and extrapolate from there. Right now, it records the value of each pin when any pin changes. This at least gives some idea of the functionality of the pins.

So far, I have two text files. One is read from the external floppy port without the HD 20 attached and no disk in the internal drive. Data logging was started before turning on the Mac, i.e., the first recorded data will be all zeros. I flicked it on and waited for several minutes until it filled up my 2 kilobyte RAM. Apparently the Mac keeps polling for something.

The other text file is with the HD-20 attached and turned on. I used a Mac Plus for this so it would be able to boot directly from the HD-20 without mixing in a bunch of floppy drive signals. Maybe half of a second after the happy Mac, my 2k RAM filled up. I can see the RD serial data starting in fairly early on. (i.e. RD goes 1, 0, 1, 0, 1, 0, etc) There is one point after having sent some serial data that other pins start sending signals for a moment, then the serial continues. The Mac may be requesting the next block at this point. I'll have to take a closer look and build a program that can record timing.

Timing is essential, because a serial feed like this:

101100111000

will be recorded like this:

101010

Because the program only detects a change in value.

jongleur:

I found an Apple "800k External Drive" that has a nearly identical cable as the HD-20 when I was digging my Mac Plus out of a heap of old Macs. It is a couple of inches longer, but in every other respect it is identical. The icon is the same and the color is the same. (it's the tan / beige accent color) If you want an authentic cord, this might just do the trick.

By the way, have you had a chance to try it with your 400k cord?

 
Here is some data for others to peruse as you wish.

Data is stored as follows:

Code: 
xxxx aa aa bb bb - cc cc dd dd - ee ee ff ff - gg gg hh hh ................
xxxx = memory address in my microcontroller (not useful)

aa aa = initial value of bus with nothing turned on yet.

bb bb = ticks until bus value 2

cc cc = bus value 2

dd dd = ticks until bus value 3

ee ee = bus value 3

ff ff = ticks until bus value 4

gg gg = bus value 4

etc.

................ = ASCII representation of data (not useful)

Time recordings are in ticks. Each tick is 41.667 ns. The counter counts up and overflows from FFFF to 0000. There is no indication of how many times the counter overflows.

The Bus data is encoded as follows:

aa aa: hexadecimal representation. Convert to Binary: abcd efgh ijkl mnop

a=RD (Serial Read data)

b=/ENBL2

c=HDSel

d=/WrReq

e=LSTRB

f=CA2

g=CA1

h=CA0

i, j, k, l, m, n, o: NOT USED, always = 0

p=WR (Serial Write data)

All tests were performed with the internal disk drive disconnected and the HD-20 connected to the Mac. The difference in tests is whether the Mac or HD20 is turned on or not.

With only the HD-20 turned on, Mac Plus off, internal disk drive disconnected:

Code: 
Run 1:
1040  00 00 F6 C5 - 40 00 FD 1A - 00 00 FD 2D - 40 00 00 00    ....@......-@...
1050  00 00 00 00 - 00 00 00 00 - 00 00 00 00 - 00 00 00 00    ................

Run 2:
1040  00 00 92 72 - 40 00 9F 24 - 00 00 9F 37 - 40 00 B4 1C    ...r@..$...7@...
1050  C0 00 B4 2F - 40 00 00 00 - 00 00 00 00 - 00 00 00 00    .../@...........


Run 1:

0xTime Ticks		Comment
x    0000 0000 0	Before Power On
0    0100 0000 0	Power On
655  0000 0000 0
13   0100 0000 0


Run 2 (let it run longer):

x    0000 0000 0	Before Power On
0    0100 0000 0	Power On
CB2  0000 0000 0
13   0100 0000 0
14E5 1100 0000 0
13   0100 0000 0	Holds this value
With only the Mac Plus turned on, HD-20 off, internal disk drive disconnected:

Code: 
1040  00 00 7D 72 - 20 00 7E FF - 00 00 7F 12 - 20 00 97 C1    ..}r .~..... ...
1050  00 00 97 D4 - 20 00 67 16 - 30 00 6A 65 - 20 00 6A 78    .... .g.0.je .jx
1060  30 00 71 42 - 20 00 71 55 - 30 00 74 A4 - 20 00 74 B7    0.qB .qU0.t. .t.
1070  30 00 76 68 - 20 00 76 7B - 30 00 78 11 - 20 00 78 24    0.vh .v{0.x. .x$
1080  30 00 7B 7C - 20 00 7B 8F - 30 00 7D 0A - 20 00 7D 1D    0.{| .{.0.}. .}.
1090  30 00 4B 9B - 70 00 4D 28 - 30 00 4D 3B - 70 00 4E BF    0.K.p.M(0.M;p.N.
10A0  30 00 4E D2 - 70 00 50 56 - 30 00 50 69 - 70 00 51 ED    0.N.p.PV0.Pip.Q.
10B0  30 00 52 00 - 70 00 58 8B - 30 00 58 9E - 70 00 5B B7    0.R.p.X.0.X.p.[.
10C0  30 00 5B CA - 70 00 5E E3 - 30 00 5E F6 - 70 00 63 A4    0.[.p.^.0.^.p.c.
10D0  30 00 63 B7 - 70 00 66 D0 - 30 00 66 E3 - 70 00 69 FC    0.c.p.f.0.f.p.i.
10E0  30 00 6A 0F - 70 00 6D 28 - 30 00 6D 3B - 70 00 70 54    0.j.p.m(0.m;p.pT
10F0  30 00 70 67 - 70 00 73 77 - 30 00 73 8A - 70 00 74 FC    0.pgp.sw0.s.p.t.
1100  30 00 75 0F - 70 00 78 28 - 30 00 78 3B - 70 00 7B 54    0.u.p.x(0.x;p.{T
1110  30 00 7B 67 - 70 00 80 15 - 30 00 80 28 - 70 00 9E 80    0.{gp...0..(p...
1120  74 00 9E A5 - 76 00 9E CA - 77 00 9F 64 - 57 00 A0 CD    t...v...w..dW...
1130  17 00 A2 00 - 1F 00 A2 5B - 17 00 A2 E3 - 15 00 A3 7D    .......[.......}
1140  17 00 A4 83 - 1F 00 A5 02 - 17 00 A5 93 - 15 00 A5 F7    ................
1150  17 00 A6 C7 - 1F 00 A7 4F - 17 00 A7 E0 - 15 00 A8 7A    .......O.......z
1160  17 00 A9 77 - 1F 00 A9 E4 - 17 00 AA 3F - 15 00 AA AC    ...w.......?....
1170  17 00 B2 7B - 16 00 B4 62 - 17 00 B4 7E - 15 00 BC 8C    ...{...b...~....
1180  55 00 BF AE - 57 00 CA 4D - 17 00 CC 07 - 1F 00 CC 62    U...W..M.......b
1190  17 00 CC EA - 15 00 CD 84 - 17 00 CE 8A - 1F 00 CF 09    ................
11A0  17 00 CF 9A - 15 00 CF FE - 17 00 D0 CE - 1F 00 D1 56    ...............V
11B0  17 00 D1 E7 - 15 00 D2 81 - 17 00 D3 7E - 1F 00 D3 F4    ...........~....
11C0  17 00 D4 58 - 15 00 D4 BC - 17 00 E4 23 - 57 00 E4 C6    ...X.......#W...
11D0  17 00 ED 2E - 16 00 EF 15 - 17 00 EF 31 - 15 00 F7 E1    ...........1....
11E0  17 00 F9 65 - 57 00 F9 ED - 17 00 FB 20 - 1F 00 FB A8    ...eW...... ....
11F0  17 00 FC 39 - 15 00 FC D3 - 17 00 05 05 - 16 00 06 E3    ...9............
1200  17 00 07 08 - 15 00 0F DC - 17 00 11 69 - 57 00 12 0C    ...........iW...
1210  17 00 13 3F - 1F 00 13 A3 - 17 00 13 FE - 15 00 14 8F    ...?............
1220  17 00 15 8C - 1F 00 16 14 - 17 00 16 A5 - 15 00 17 3F    ...............?
1230  17 00 1F 56 - 16 00 21 3D - 17 00 21 59 - 15 00 29 DC    ...V..!=..!Y..).
1240  17 00 2B 57 - 57 00 2B FA - 17 00 2D 36 - 1F 00 2D B5    ..+WW.+...-6..-.
1250  17 00 2E 46 - 15 00 2E E0 - 17 00 2F E6 - 1F 00 30 65    ...F....../...0e
1260  17 00 30 C9 - 15 00 31 2D - 17 00 31 FD - 1F 00 32 7C    ..0...1-..1...2|
1270  17 00 33 0D - 15 00 33 A7 - 17 00 3B C7 - 16 00 3D AE    ..3...3...;...=.
1280  17 00 3D CA - 15 00 9B 55 - 55 00 FF 42 - D5 00 FF 55    ..=....UU..B...U
1290  55 00 02 77 - D5 00 02 8A - 55 00 00 00 - 00 00 00 00    U..w....U.......
With BOTH the Mac Plus turned on, HD-20 on, internal disk drive disconnected, booting until a moment after the happy Mac appears:

Code: 
1040  00 00 4D 29 - 40 00 4D 3C - 00 00 4E C0 - 40 00 51 EB    ..M)@.M<..N.@.Q.
1050  00 00 51 FE - 40 00 55 17 - 00 00 55 2A - 40 00 58 43    ..Q.@.U...U*@.XC
1060  00 00 58 56 - 40 00 7C 40 - 00 00 AB 6F - 40 00 F4 12    ..XV@.|@...o@...
1070  00 00 B1 88 - 80 00 B1 9B - 00 00 B4 B4 - 80 00 B4 C7    ................
1080  00 00 B7 E0 - 80 00 B7 F3 - 00 00 BB 0C - 80 00 BB 1F    ................
1090  00 00 BC A3 - 80 00 CF A9 - 00 00 CF BC - 80 00 D2 D5    ................
10A0  00 00 D2 E8 - 80 00 D6 01 - 00 00 D6 14 - 80 00 D9 2D    ...............-
10B0  00 00 D9 40 - 80 00 A8 EC - A0 00 A8 FF - E0 00 AA 7A    ...@...........z
10C0  C0 00 CD 01 - E0 00 CE 97 - C0 00 D0 2D - E0 00 99 75    ...........-...u
10D0  60 00 A8 B8 - 70 00 A8 CB - 60 00 B5 6B - 70 00 B8 96    `...p...`..kp...
10E0  60 00 BA 2C - 70 00 C2 16 - 60 00 C2 29 - 70 00 C5 42    `..,p...`..)p..B
10F0  60 00 C5 55 - 70 00 C8 6E - 60 00 C8 81 - 70 00 CA 05    `..Up..n`...p...
1100  60 00 CA 18 - 70 00 CD 31 - 60 00 CD 44 - 70 00 D0 5D    `...p..1`..Dp..]
1110  60 00 D0 70 - 70 00 D1 F4 - 60 00 D2 07 - 70 00 D6 B5    `..pp...`...p...
1120  60 00 D6 C8 - 70 00 D9 E1 - 60 00 D9 F4 - 70 00 41 6C    `...p...`...p.Al
1130  F0 00 8B 50 - F4 00 8B 7E - F6 00 8B 9A - F7 00 8C 22    ...P...~......."
1140  D7 00 8D 9D - 97 00 8E D0 - 9F 00 8F 2B - 97 00 8F 8F    ...........+....
1150  95 00 8F FC - 97 00 90 F0 - 9F 00 91 6F - 97 00 92 00    ...........o....
1160  95 00 92 9A - 97 00 93 A0 - 9F 00 93 FB - 97 00 94 68    ...............h
1170  95 00 95 02 - 97 00 95 FF - 9F 00 96 7E - 97 00 97 18    ...........~....
1180  95 00 97 97 - 97 00 9F 81 - 96 00 A1 68 - 97 00 A1 84    ...........h....
1190  95 00 A9 6E - D5 00 AC C6 - D7 00 B7 4A - 97 00 B9 0D    ...n.......J....
11A0  9F 00 B9 68 - 97 00 B9 CC - 95 00 BA 30 - 97 00 BB 24    ...h.......0...$
11B0  9F 00 BB A3 - 97 00 BC 3D - 95 00 BC D7 - 97 00 BD D4    .......=........
11C0  9F 00 BE 2F - 97 00 BE B7 - 95 00 BF 51 - 97 00 C0 4E    .../.......Q...N
11D0  9F 00 C0 D6 - 97 00 C1 67 - 95 00 C1 CB - 97 00 D1 32    .......g.......2
11E0  D7 00 D1 DE - 97 00 DA 61 - 96 00 DC 48 - 97 00 DC 64    .......a...H...d
11F0  15 00 EE 41 - 95 00 EE 54 - 97 00 EF BD - D7 00 F0 45    ...A...T.......E
1200  97 00 F1 78 - 9F 00 F2 09 - 97 00 F2 9A - 95 00 F3 34    ...x...........4
1210  97 00 FB 54 - 96 00 FD 29 - 97 00 FD 45 - 95 00 05 F5    ...T...)...E....
1220  97 00 07 82 - D7 00 08 25 - 97 00 09 61 - 9F 00 09 BC    .......%...a....
1230  97 00 0A 17 - 95 00 0A A8 - 97 00 0B A5 - 9F 00 0C 2D    ...............-
1240  97 00 0C BE - 95 00 0D 58 - 97 00 15 78 - 96 00 17 56    .......X...x...V
1250  97 00 17 72 - 95 00 1F F5 - 97 00 21 70 - D7 00 22 1C    ...r......!p..".
1260  97 00 23 4F - 9F 00 23 CE - 97 00 24 5F - 95 00 24 F9    ..#O..#...$_..$.
1270  97 00 25 FF - 9F 00 26 7E - 97 00 26 E2 - 95 00 27 46    ..%...&~..&...'F
1280  97 00 28 16 - 9F 00 28 95 - 97 00 29 2F - 95 00 29 C9    ..(...(...)/..).
1290  97 00 31 E0 - 96 00 33 C7 - 97 00 33 E3 - 95 00 E0 FB    ..1...3...3.....
12A0  97 00 E2 76 - D7 00 E3 19 - 97 00 6C 87 - 96 00 6C AC    ...v......l...l.
12B0  92 00 71 00 - 96 00 71 49 - 97 00 72 BB - D7 00 73 5E    ..q...qI..r...s^
12C0  97 00 75 33 - 96 00 75 58 - 92 00 84 F5 - 93 00 88 56    ..u3..uX.......V
12D0  13 00 88 DE - 11 00 8A BC - 01 00 8A EA - 01 01 8B 4E    ...............N
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1510  91 00 4C 1D - 11 00 4F 3F - 91 00 4F 52 - 11 00 50 D6    ..L...O?..OR..P.
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1900  91 00 4C 16 - 11 00 4F 38 - 91 00 4F 4B - 11 00 51 05    ..L...O8..OK..Q.
1910  91 00 51 18 - 11 00 54 04 - 91 00 54 17 - 11 00 57 39    ..Q...T...T...W9
1920  91 00 57 4C - 11 00 58 D0 - 91 00 58 E3 - 11 00 59 6B    ..WL..X...X...Yk
1930  91 00 59 7E - 11 00 59 D0 - 91 00 59 E3 - 11 00 5A 08    ..Y~..Y...Y...Z.
1940  91 00 5A 1B - 11 00 5A 37 - 91 00 5A 4A - 11 00 5A D2    ..Z...Z7..ZJ..Z.
1950  91 00 5A E5 - 11 00 5B 37 - 91 00 5B 4A - 11 00 5B 9C    ..Z...[7..[J..[.
1960  91 00 5B AF - 11 00 5B D4 - 91 00 5B E7 - 11 00 5C 03    ..[...[...[...\.
1970  91 00 5C 16 - 11 00 5C 3B - 91 00 5C 4E - 11 00 5C 6A    ..\...\;..\N..\j
1980  91 00 5C 7D - 11 00 5D 05 - 91 00 5D 18 - 11 00 5D 6A    ..\}..]...]...]j
1990  91 00 5D 7D - 11 00 5E 05 - 91 00 5E 18 - 11 00 5E 6A    ..]}..^...^...^j
19A0  91 00 5E 7D - 11 00 5F 3B - 91 00 5F 4E - 11 00 5F 6A    ..^}.._;.._N.._j
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19C0  91 00 60 7D - 11 00 62 6D - 91 00 62 80 - 11 00 64 04    ..`}..bm..b...d.
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1AC0  91 00 AF 47 - 11 00 B2 69 - 91 00 B2 7C - 11 00 B5 9E    ...G...i...|....
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1BB0  91 00 FA E3 - 11 00 FB 35 - 91 00 FB 48 - 11 00 FB 9A    .......5...H....
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1C60  91 00 05 AD - 11 00 06 35 - 91 00 06 48 - 11 00 06 9A    .......5...H....
1C70  91 00 06 AD - 11 00 07 35 - 91 00 07 48 - 11 00 07 9A    .......5...H....
1C80  91 00 07 AD - 11 00 08 35 - 91 00 08 48 - 11 00 08 9A    .......5...H....
1C90  91 00 08 AD - 11 00 09 35 - 91 00 09 48 - 11 00 09 9A    .......5...H....
1CA0  91 00 09 AD - 11 00 0A 35 - 91 00 0A 48 - 11 00 0A 9A    .......5...H....
1CB0  91 00 0A AD - 11 00 0B 35 - 91 00 0B 48 - 11 00 0B 9A    .......5...H....
1CC0  91 00 0B AD - 11 00 0C 35 - 91 00 0C 48 - 11 00 0C 9A    .......5...H....
1CD0  91 00 0C AD - 11 00 0C FF - 91 00 0D 12 - 11 00 0D 37    ...............7
1CE0  91 00 0D 4A - 11 00 0D 66 - 91 00 0D 79 - 11 00 0D 9E    ...J...f...y....
1CF0  91 00 0D B1 - 11 00 0D CD - 91 00 0D E0 - 11 00 0E 68    ...............h
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1E20  91 00 1F 13 - 11 00 1F 9B - 91 00 1F AE - 11 00 20 00    .............. .
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1ED0  91 00 28 E1 - 11 00 29 33 - 91 00 29 46 - 11 00 29 CE    ..(...)3..)F..).
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1F60  91 00 30 79 - 11 00 31 01 - 91 00 31 14 - 11 00 31 66    ..0y..1...1...1f
1F70  91 00 31 79 - 11 00 32 01 - 91 00 32 14 - 11 00 32 66    ..1y..2...2...2f
1F80  91 00 32 79 - 11 00 33 01 - 91 00 33 14 - 11 00 33 66    ..2y..3...3...3f
1F90  91 00 33 79 - 11 00 34 01 - 91 00 34 14 - 11 00 34 66    ..3y..4...4...4f
1FA0  91 00 34 79 - 11 00 35 01 - 91 00 35 14 - 11 00 35 66    ..4y..5...5...5f
1FB0  91 00 35 79 - 11 00 36 01 - 91 00 36 14 - 11 00 36 66    ..5y..6...6...6f
1FC0  91 00 36 79 - 11 00 37 01 - 91 00 37 14 - 11 00 37 66    ..6y..7...7...7f
1FD0  91 00 37 79 - 11 00 37 CB - 91 00 37 DE - 11 00 38 03    ..7y..7...7...8.
1FE0  91 00 38 16 - 11 00 38 32 - 91 00 38 45 - 11 00 38 6A    ..8...82..8E..8j
1FF0  91 00 38 7D - 11 00 38 99 - 91 00 38 AC - 11 00 39 34    ..8}..8...8...94
2000  91 00 39 47 - 11 00 39 99 - 91 00 39 AC - 11 00 3A 34    ..9G..9...9...:4
2010  91 00 3A 47 - 11 00 3A 99 - 91 00 3A AC - 11 00 3B 34    ..:G..:...:...;4
2020  91 00 3B 47 - 11 00 3B 99 - 91 00 3B AC - 11 00 3C 34    ..;G..;...;...<4
2030  91 00 3C 47 - 11 00 3C 99 - 91 00 3C AC - 11 00 3D 34    ..2040  91 00 3D 47 - 11 00 3D 99 - 91 00 3D AC - 11 00 3E 34    ..=G..=...=...>4
2050  91 00 3E 47 - 11 00 3E 99 - 91 00 3E AC - 11 00 3F 34    ..>G..>...>...?4
2060  91 00 3F 47 - 11 00 3F 99 - 91 00 3F AC - 11 00 40 34    ..?G..?...?...@4
2070  91 00 40 47 - 11 00 40 99 - 91 00 40 AC - 11 00 41 34    ..@G..@...@...A4
2080  91 00 41 47 - 11 00 41 99 - 91 00 41 AC - 11 00 42 34    ..AG..A...A...B4
2090  91 00 42 47 - 11 00 42 CF - 91 00 42 E2 - 11 00 42 FE    ..BG..B...B...B.
20A0  91 00 43 11 - 11 00 43 36 - 91 00 43 49 - 11 00 43 65    ..C...C6..CI..Ce
20B0  91 00 43 78 - 11 00 43 9D - 91 00 43 B0 - 11 00 43 CC    ..Cx..C...C...C.
20C0  91 00 43 DF - 11 00 44 67 - 91 00 44 7A - 11 00 44 CC    ..C...Dg..Dz..D.
20D0  91 00 44 DF - 11 00 45 67 - 91 00 45 7A - 11 00 45 CC    ..D...Eg..Ez..E.
20E0  91 00 45 DF - 11 00 46 67 - 91 00 46 7A - 11 00 46 CC    ..E...Fg..Fz..F.
20F0  91 00 46 DF - 11 00 47 67 - 91 00 47 7A - 11 00 47 CC    ..F...Gg..Gz..G.
2100  91 00 47 DF - 11 00 48 67 - 91 00 48 7A - 11 00 48 CC    ..G...Hg..Hz..H.
2110  91 00 48 DF - 11 00 49 67 - 91 00 49 7A - 11 00 49 CC    ..H...Ig..Iz..I.
2120  91 00 49 DF - 11 00 4A 67 - 91 00 4A 7A - 11 00 4B FE    ..I...Jg..Jz..K.
2130  91 00 4C 11 - 11 00 4F 33 - 91 00 4F 46 - 11 00 52 32    ..L...O3..OF..R2
2140  91 00 52 45 - 11 00 53 FF - 91 00 54 12 - 11 00 57 34    ..RE..S...T...W4
2150  91 00 57 47 - 11 00 58 CB - 91 00 58 DE - 11 00 5C 00    ..WG..X...X...\.
2160  91 00 5C 13 - 11 00 5F 35 - 91 00 5F 48 - 11 00 60 CC    ..\..._5.._H..`.
2170  91 00 60 DF - 11 00 64 01 - 91 00 64 14 - 11 00 65 98    ..`...d...d...e.
2180  91 00 65 AB - 11 00 68 CD - 91 00 68 E0 - 11 00 6A 64    ..e...h...h...jd
2190  91 00 6A 77 - 11 00 6D 99 - 91 00 6D AC - 11 00 70 CE    ..jw..m...m...p.
21A0  91 00 70 E1 - 11 00 72 65 - 91 00 72 78 - 11 00 75 9A    ..p...re..rx..u.
21B0  91 00 75 AD - 11 00 76 35 - 91 00 76 48 - 11 00 77 33    ..u...v5..vH..w3
21C0  91 00 77 46 - 11 00 7C 60 - 91 00 7C 73 - 93 00 7D 5E    ..wF..|`..|s..}^
21D0  92 00 9C 73 - 93 00 9F 44 - 13 00 9F D5 - 11 00 A1 B3    ...s...D........
21E0  01 00 A1 EA - 81 01 A1 FD - 01 01 A2 4F - 81 00 A2 62    ...........O...b
21F0  01 00 A2 AB - 01 01 A3 0F - 01 00 A3 73 - 81 01 A3 86    ...........s....
2200  01 01 A4 CB - 81 00 A4 DE - 01 00 A4 FA - 81 01 A5 0D    ................
2210  01 01 A5 29 - 81 00 A5 3C - 01 00 A5 BB - 01 01 A5 F2    ...)...<........
2220  81 00 A6 05 - 01 00 A6 4E - 01 01 A6 85 - 81 00 A6 98    .......N........
2230  01 00 A8 0A - 81 01 A8 1D - 01 01 A9 8F - 01 00 AA E6    ................
2240  01 01 AB 1D - 81 00 AB 30 - 01 00 AC A2 - 01 01 AE 26    .......0.......&
2250  01 00 AF B3 - 81 01 AF C6 - 01 01 B1 38 - 01 00 B1 6F    ...........8...o
2260  81 01 B1 82 - 01 01 B1 9E - 81 00 B1 B1 - 01 00 B1 CD    ................
2270  81 01 B1 E0 - 01 01 B1 FC - 01 00 B2 33 - 81 01 B2 46    ...........3...F
2280  01 01 B2 62 - 81 00 B2 75 - 01 00 B2 91 - 01 01 B3 6A    ...b...u.......j
2290  03 01 B3 C5 - 13 00 B3 FC - 93 00 B4 96 - 92 00 E9 15    ................
22A0  12 00 FE 9A - 13 00 FE BF - 11 00 02 32 - 91 00 02 45    ...........2...E
22B0  11 00 02 97 - 91 00 02 AA - 11 00 02 FC - 91 00 03 0F    ................
22C0  11 00 03 CD - 91 00 03 E0 - 11 00 03 FC - 91 00 04 0F    ................
22D0  11 00 05 66 - 91 00 05 79 - 11 00 06 FD - 91 00 07 10    ...f...y........
22E0  11 00 0A 32 - 91 00 0A 45 - 11 00 0B C9 - 91 00 0B DC    ...2...E........
22F0  11 00 0D 96 - 91 00 0D A9 - 11 00 0D CE - 91 00 0D E1    ................
2300  11 00 0E CC - 91 00 0E DF - 11 00 10 99 - 91 00 10 AC    ................
2310  11 00 10 FE - 91 00 11 11 - 11 00 12 32 - 91 00 12 45    ...........2...E
2320  11 00 13 30 - 91 00 13 43 - 11 00 13 CB - 91 00 13 DE    ...0...C........
2330  11 00 14 30 - 91 00 14 43 - 11 00 15 64 - 91 00 15 77    ...0...C...d...w
2340  11 00 16 CE - 91 00 16 E1 - 11 00 16 FD - 91 00 17 10    ................
2350  11 00 1A 32 - 91 00 1A 45 - 11 00 1A CD - 91 00 1A E0    ...2...E........
2360  11 00 1A FC - 91 00 1B 0F - 11 00 1B CD - 91 00 1B E0    ................
2370  11 00 1C 95 - 91 00 1C A8 - 11 00 1C CD - 91 00 1C E0    ................
2380  11 00 1D 32 - 91 00 1D 45 - 11 00 1E FF - 91 00 1F 12    ...2...E........
2390  11 00 20 96 - 91 00 20 A9 - 11 00 21 31 - 91 00 21 44    .. ... ...!1..!D
23A0  11 00 21 96 - 91 00 21 A9 - 11 00 22 31 - 91 00 22 44    ..!...!..."1.."D
23B0  11 00 22 96 - 91 00 22 A9 - 11 00 23 31 - 91 00 23 44    .."..."...#1..#D
23C0  11 00 23 96 - 91 00 23 A9 - 11 00 24 31 - 91 00 24 44    ..#...#...$1..$D
23D0  11 00 25 2F - 91 00 25 42 - 11 00 25 67 - 91 00 25 7A    ..%/..%B..%g..%z
23E0  11 00 25 CC - 91 00 25 DF - 11 00 26 67 - 91 00 26 7A    ..%...%...&g..&z
23F0  11 00 26 96 - 91 00 26 A9 - 11 00 27 67 - 91 00 27 7A    ..&...&...'g..'z
2400  11 00 28 2F - 91 00 28 42 - 11 00 29 63 - 91 00 29 76    ..(/..(B..)c..)v
2410  11 00 2A 97 - 91 00 2A AA - 11 00 2A FC - 91 00 2B 0F    ..*...*...*...+.
2420  11 00 2B 97 - 91 00 2B AA - 11 00 2D 64 - 91 00 2D 77    ..+...+...-d..-w
2430  11 00 2E FB - 91 00 2F 0E - 11 00 30 2F - 91 00 30 42    ....../...0/..0B
2440  11 00 32 32 - 91 00 32 45 - 11 00 32 97 - 91 00 32 AA    ..22..2E..2...2.
2450  11 00 33 32 - 91 00 33 45 - 11 00 33 CD - 91 00 33 E0    ..32..3E..3...3.
2460  11 00 34 32 - 91 00 34 45 - 11 00 34 CD - 91 00 34 E0    ..42..4E..4...4.
2470  11 00 35 32 - 91 00 35 45 - 11 00 35 97 - 91 00 35 AA    ..52..5E..5...5.
2480  11 00 37 64 - 91 00 37 77 - 11 00 38 98 - 91 00 38 AB    ..7d..7w..8...8.
2490  11 00 3A 2F - 91 00 3A 42 - 11 00 3B FC - 91 00 3C 0F    ....:B..;...<.
24A0  11 00 3D 30 - 91 00 3D 43 - 11 00 3E FD - 91 00 3F 10    ..=0..=C..>...?.
24B0  11 00 40 31 - 91 00 40 44 - 11 00 40 96 - 91 00 40 A9    ..@1..@D..@...@.
24C0  11 00 42 99 - 91 00 42 AC - 11 00 43 CD - 91 00 43 E0    ..B...B...C...C.
24D0  11 00 45 64 - 91 00 45 77 - 11 00 46 98 - 91 00 46 AB    ..Ed..Ew..F...F.
24E0  11 00 46 FD - 91 00 47 10 - 11 00 47 62 - 91 00 47 75    ..F...G...Gb..Gu
24F0  11 00 48 96 - 91 00 48 A9 - 11 00 48 FB - 91 00 49 0E    ..H...H...H...I.
2500  11 00 49 33 - 91 00 49 46 - 11 00 49 62 - 91 00 49 75    ..I3..IF..Ib..Iu
2510  11 00 4A 33 - 91 00 4A 46 - 11 00 4A 98 - 91 00 4A AB    ..J3..JF..J...J.
2520  11 00 4A FD - 91 00 4B 10 - 11 00 4B 98 - 91 00 4B AB    ..J...K...K...K.
2530  11 00 4C 33 - 91 00 4C 46 - 11 00 4C 62 - 91 00 4C 75    ..L3..LF..Lb..Lu
2540  11 00 4C FD - 91 00 4D 10 - 11 00 4D 62 - 91 00 4D 75    ..L...M...Mb..Mu
2550  11 00 4D FD - 91 00 4E 10 - 11 00 4E 98 - 91 00 4E AB    ..M...N...N...N.
2560  11 00 4E FD - 91 00 4F 10 - 11 00 4F 98 - 91 00 4F AB    ..N...O...O...O.
2570  11 00 4F FD - 91 00 50 10 - 11 00 50 98 - 91 00 50 AB    ..O...P...P...P.
2580  11 00 50 FD - 91 00 51 10 - 11 00 51 98 - 91 00 51 AB    ..P...Q...Q...Q.
2590  11 00 52 33 - 91 00 52 46 - 11 00 53 CA - 91 00 53 DD    ..R3..RF..S...S.
25A0  11 00 54 65 - 91 00 54 78 - 11 00 55 63 - 91 00 55 76    ..Te..Tx..Uc..Uv
25B0  11 00 55 FE - 91 00 56 11 - 11 00 56 FC - 91 00 57 0F    ..U...V...V...W.
25C0  11 00 57 97 - 91 00 57 AA - 11 00 58 95 - 91 00 58 A8    ..W...W...X...X.
25D0  11 00 59 30 - 91 00 59 43 - 11 00 5A 2E - 91 00 5A 41    ..Y0..YC..Z...ZA
25E0  11 00 5A C9 - 91 00 5A DC - 11 00 5B C7 - 91 00 5B DA    ..Z...Z...[...[.
25F0  11 00 5D 31 - 91 00 5D 44 - 11 00 5E FE - 91 00 5F 11    ..]1..]D..^..._.
2600  11 00 5F 99 - 91 00 5F AC - 11 00 60 97 - 91 00 60 AA    .._..._...`...`.
2610  11 00 61 32 - 91 00 61 45 - 11 00 62 30 - 91 00 62 43    ..a2..aE..b0..bC
2620  11 00 63 64 - 91 00 63 77 - 11 00 63 C9 - 91 00 63 DC    ..cd..cw..c...c.
2630  11 00 64 2E - 91 00 64 41 - 11 00 64 FF - 91 00 65 12    ..d...dA..d...e.
2640  11 00 65 2E - 91 00 65 41 - 11 00 65 66 - 91 00 65 79    ..e...eA..ef..ey
2650  11 00 65 CB - 91 00 65 DE - 11 00 65 FA - 91 00 66 0D    ..e...e...e...f.
2660  11 00 67 64 - 91 00 67 77 - 11 00 67 FF - 91 00 68 12    ..gd..gw..g...h.
2670  11 00 68 2E - 91 00 68 41 - 11 00 68 66 - 91 00 68 79    ..h...hA..hf..hy
2680  11 00 68 95 - 91 00 68 A8 - 11 00 68 FA - 91 00 69 0D    ..h...h...h...i.
2690  11 00 6A 2E - 91 00 6A 41 - 11 00 6A C9 - 91 00 6A DC    ..j...jA..j...j.
26A0  11 00 6B 64 - 91 00 6B 77 - 11 00 6B C9 - 91 00 6B DC    ..kd..kw..k...k.
26B0  11 00 6C 2E - 91 00 6C 41 - 11 00 6C 66 - 91 00 6C 79    ..l...lA..lf..ly
26C0  11 00 6D 64 - 91 00 6D 77 - 11 00 6D C9 - 91 00 6D DC    ..md..mw..m...m.
26D0  11 00 6E 2E - 91 00 6E 41 - 11 00 6E C9 - 91 00 6E DC    ..n...nA..n...n.
26E0  11 00 70 96 - 91 00 70 A9 - 11 00 71 31 - 91 00 71 44    ..p...p...q1..qD
26F0  11 00 72 2F - 91 00 72 42 - 11 00 72 CA - 91 00 72 DD    ..r/..rB..r...r.
2700  11 00 73 C8 - 91 00 73 DB - 11 00 74 63 - 91 00 74 76    ..s...s...tc..tv
2710  11 00 75 61 - 91 00 75 74 - 11 00 76 95 - 91 00 76 A8    ..ua..ut..v...v.
2720  11 00 76 FA - 91 00 77 0D - 11 00 77 95 - 91 00 77 A8    ..v...w...w...w.
2730  11 00 7A 31 - 91 00 7A 44 - 11 00 7A CC - 91 00 7A DF    ..z1..zD..z...z.
2740  11 00 7B CA - 91 00 7B DD - 11 00 7C 65 - 91 00 7C 78    ..{...{...|e..|x
2750  11 00 7D 63 - 91 00 7D 76 - 11 00 7D FE - 91 00 7E 11    ..}c..}v..}...~.
2760  11 00 7E FC - 91 00 7F 0F - 11 00 80 30 - 91 00 80 43    ..~........0...C
2770  11 00 80 95 - 91 00 80 A8 - 11 00 80 FA - 91 00 81 0D    ................
2780  11 00 81 95 - 91 00 81 A8 - 11 00 82 30 - 91 00 82 43    ...........0...C
2790  11 00 82 95 - 91 00 82 A8 - 11 00 83 C9 - 91 00 83 DC    ................
27A0  11 00 84 2E - 91 00 84 41 - 11 00 85 62 - 91 00 85 75    .......A...b...u
27B0  11 00 85 C7 - 91 00 85 DA - 11 00 85 FF - 91 00 86 12    ................
27C0  11 00 86 C7 - 91 00 86 DA - 11 00 86 FF - 91 00 87 12    ................
27D0  11 00 87 64 - 91 00 87 77 - 11 00 87 93 - 91 00 87 A6    ...d...w........
27E0  11 00 87 CB - 91 00 87 DE - 11 00 88 93 - 91 00 88 A6    ................
27F0  11 00 89 2E - 91 00 89 41 - 11 00 8A 98 - 91 00 8A AB    .......A........
2800  11 00 8A C7 - 91 00 8A DA - 11 00 8A FF - 91 00 8B 12    ................
2810  11 00 8B 64 - 91 00 8B 77 - 11 00 8B C9 - 91 00 8B DC    ...d...w........
2820  11 00 8C 2E - 91 00 8C 41 - 11 00 8D 62 - 91 00 8D 75    .......A...b...u
2830  11 00 8D FD - 91 00 8E 10 - 11 00 8E FB - 91 00 8F 0E    ................
2840  11 00 8F 60 - 91 00 8F 73 - 11 00 8F 98 - 91 00 8F AB    ...`...s........
2850  11 00 8F FD - 91 00 90 10 - 11 00 90 62 - 91 00 90 75    ...........b...u
2860  11 00 92 2F - 91 00 92 42 - 11 00 92 CA - 91 00 92 DD    .../...B........
2870  11 00 93 C8 - 91 00 93 DB - 11 00 94 63 - 91 00 94 76    ...........c...v
2880  11 00 95 61 - 91 00 95 74 - 11 00 95 FC - 91 00 96 0F    ...a...t........
2890  11 00 96 FA - 91 00 97 0D - 11 00 97 95 - 91 00 97 A8    ................
28A0  11 00 98 93 - 91 00 98 A6 - 11 00 99 2E - 91 00 99 41    ...............A
28B0  11 00 9B CA - 91 00 9B DD - 11 00 9D 61 - 91 00 9D 74    ...........a...t
28C0  11 00 9E 95 - 91 00 9E A8 - 11 00 9E FA - 91 00 9F 0D    ................
28D0  11 00 A0 2E - 91 00 A0 41 - 11 00 A0 93 - 91 00 A0 A6    .......A........
28E0  11 00 A1 2E - 91 00 A1 41 - 11 00 A1 93 - 91 00 A1 A6    .......A........
28F0  11 00 A2 2E - 91 00 A2 41 - 11 00 A2 93 - 91 00 A2 A6    .......A........
2900  11 00 A2 CB - 91 00 A2 DE - 11 00 A2 FA - 91 00 A3 0D    ................
2910  11 00 A3 95 - 91 00 A3 A8 - 11 00 A4 30 - 91 00 A4 43    ...........0...C
2920  11 00 A5 64 - 91 00 A5 77 - 11 00 A5 C9 - 91 00 A5 DC    ...d...w........
2930  11 00 A6 2E - 91 00 A6 41 - 11 00 A6 C9 - 91 00 A6 DC    .......A........
2940  11 00 A7 64 - 91 00 A7 77 - 11 00 A7 93 - 91 00 A7 A6    ...d...w........
2950  11 00 A7 CB - 91 00 A7 DE - 11 00 A8 93 - 91 00 A8 A6    ................
2960  11 00 A8 CB - 91 00 A8 DE - 11 00 A8 FA - 91 00 A9 0D    ................
2970  11 00 A9 95 - 91 00 A9 A8 - 11 00 AA 30 - 91 00 AA 43    ...........0...C
2980  11 00 AA 95 - 91 00 AA A8 - 11 00 AB C9 - 91 00 AB DC    ................
2990  11 00 AC 2E - 91 00 AC 41 - 11 00 AC C9 - 91 00 AC DC    .......A........
29A0  11 00 AD 64 - 91 00 AD 77 - 11 00 AD C9 - 91 00 AD DC    ...d...w........
29B0  11 00 AE C7 - 91 00 AE DA - 11 00 AF 62 - 91 00 AF 75    ...........b...u
29C0  11 00 AF FD - 91 00 B0 10 - 11 00 B0 2C - 91 00 B0 3F    ...........,...?
29D0  11 00 B0 FD - 91 00 B1 10 - 11 00 B1 2C - 91 00 B1 3F    ...........,...?
29E0  11 00 B1 C7 - 91 00 B1 DA - 11 00 B2 2C - 91 00 B2 3F    ...........,...?
29F0  11 00 B2 C7 - 91 00 B2 DA - 11 00 B5 63 - 91 00 B5 76    ...........c...v
2A00  11 00 B5 FE - 91 00 B6 11 - 11 00 B6 C6 - 91 00 B6 D9    ................
2A10  11 00 B6 FE - 91 00 B7 11 - 11 00 B8 95 - 91 00 B8 A8    ................
2A20  11 00 B9 30 - 91 00 B9 43 - 11 00 BA 2E - 91 00 BA 41    ...0...C.......A
2A30  11 00 BB 2C - 91 00 BB 3F - 11 00 BB 64 - 91 00 BB 77    ...,...?...d...w
2A40  11 00 BB C9 - 91 00 BB DC - 11 00 BC 2E - 91 00 BC 41    ...............A
2A50  11 00 BC 93 - 91 00 BC A6 - 11 00 BD 2E - 91 00 BD 41    ...............A
2A60  11 00 BD C9 - 91 00 BD DC - 11 00 BE 2E - 91 00 BE 41    ...............A
2A70  11 00 BE 93 - 91 00 BE A6 - 11 00 BF 64 - 91 00 BF 77    ...........d...w
2A80  11 00 BF 93 - 91 00 BF A6 - 11 00 C0 FD - 91 00 C1 10    ................
2A90  11 00 C1 2C - 91 00 C1 3F - 11 00 C1 64 - 91 00 C1 77    ...,...?...d...w
2AA0  11 00 C2 2C - 91 00 C2 3F - 11 00 C2 FD - 91 00 C3 10    ...,...?........
2AB0  11 00 C3 2C - 91 00 C3 3F - 11 00 C3 C7 - 91 00 C3 DA    ...,...?........
2AC0  11 00 C4 2C - 91 00 C4 3F - 11 00 C4 64 - 91 00 C4 77    ...,...?...d...w
2AD0  11 00 C4 93 - 91 00 C4 A6 - 11 00 C5 64 - 91 00 C5 77    ...........d...w
2AE0  11 00 C5 C9 - 91 00 C5 DC - 11 00 C6 2E - 91 00 C6 41    ...............A
2AF0  11 00 C6 93 - 91 00 C6 A6 - 11 00 C7 64 - 91 00 C7 77    ...........d...w
2B00  11 00 C7 93 - 91 00 C7 A6 - 11 00 C8 FD - 91 00 C9 10    ................
2B10  11 00 C9 62 - 91 00 C9 75 - 11 00 C9 FD - 91 00 CA 10    ...b...u........
2B20  11 00 CA 2C - 91 00 CA 3F - 11 00 CA C7 - 91 00 CA DA    ...,...?........
2B30  11 00 CB C5 - 91 00 CB D8 - 11 00 CC 60 - 91 00 CC 73    ...........`...s
2B40  11 00 CD CA - 91 00 CD DD - 11 00 CD F9 - 91 00 CE 0C    ................
2B50  11 00 CE 94 - 91 00 CE A7 - 11 00 CE F9 - 91 00 CF 0C    ................
2B60  11 00 CF 31 - 91 00 CF 44 - 11 00 CF 96 - 91 00 CF A9    ...1...D........
2B70  11 00 CF C5 - 91 00 CF D8 - 11 00 D0 96 - 91 00 D0 A9    ................
2B80  11 00 D0 FB - 91 00 D1 0E - 11 00 D2 2F - 91 00 D2 42    .........../...B
2B90  11 00 D2 94 - 91 00 D2 A7 - 11 00 D3 2F - 91 00 D3 42    .........../...B
2BA0  11 00 D3 94 - 91 00 D3 A7 - 11 00 D5 61 - 91 00 D5 74    ...........a...t
2BB0  11 00 D5 FC - 91 00 D6 0F - 11 00 D6 FA - 91 00 D7 0D    ................
2BC0  11 00 D8 2E - 91 00 D8 41 - 11 00 D8 93 - 91 00 D8 A6    .......A........
2BD0  11 00 D8 F8 - 91 00 D9 0B - 11 00 D9 C9 - 91 00 D9 DC    ................
2BE0  11 00 D9 F8 - 91 00 DA 0B - 11 00 DA 30 - 91 00 DA 43    ...........0...C
2BF0  11 00 DA 95 - 91 00 DA A8 - 11 00 DB 30 - 91 00 DB 43    ...........0...C
2C00  11 00 DB F8 - 91 00 DC 0B - 11 00 DD 2C - 91 00 DD 3F    ...........,...?
2C10  11 00 DD C7 - 91 00 DD DA - 11 00 DE 62 - 91 00 DE 75    ...........b...u
2C20  11 00 DE C7 - 91 00 DE DA - 11 00 DF 62 - 91 00 DF 75    ...........b...u
2C30  11 00 E0 96 - 91 00 E0 A9 - 11 00 E0 FB - 91 00 E1 0E    ................
2C40  11 00 E2 2F - 91 00 E2 42 - 11 00 E2 94 - 91 00 E2 A7    .../...B........
2C50  11 00 E2 F9 - 91 00 E3 0C - 11 00 E3 94 - 91 00 E3 A7    ................
2C60  11 00 E5 61 - 91 00 E5 74 - 11 00 E5 C6 - 91 00 E5 D9    ...a...t........
2C70  11 00 E6 2B - 91 00 E6 3E - 11 00 E6 63 - 91 00 E6 76    ...+...>...c...v
2C80  11 00 E7 2B - 91 00 E7 3E - 11 00 E7 63 - 91 00 E7 76    ...+...>...c...v
2C90  11 00 E7 92 - 91 00 E7 A5 - 11 00 E8 2D - 91 00 E8 40    ...........-...@
2CA0  11 00 E8 92 - 91 00 E8 A5 - 11 00 EA 5F - 91 00 EA 72    ..........._...r
2CB0  11 00 EB C9 - 91 00 EB DC - 11 00 ED 60 - 91 00 ED 73    ...........`...s
2CC0  11 00 EF C6 - 91 00 EF D9 - 11 00 F0 61 - 91 00 F0 74    ...........a...t
2CD0  11 00 F2 2E - 91 00 F2 41 - 11 00 F3 C5 - 91 00 F3 D8    .......A........
2CE0  11 00 F4 F9 - 91 00 F5 0C - 11 00 F5 5E - 91 00 F5 71    ...........^...q
2CF0  11 00 F7 61 - 91 00 F7 74 - 11 00 F8 5F - 91 00 F8 72    ...a...t..._...r
2D00  11 00 F8 FA - 91 00 F9 0D - 11 00 F9 95 - 91 00 F9 A8    ................
2D10  11 00 FA 30 - 91 00 FA 43 - 11 00 FA 95 - 91 00 FA A8    ...0...C........
2D20  11 00 FB 30 - 91 00 FB 43 - 11 00 FC 2E - 91 00 FC 41    ...0...C.......A
2D30  11 00 FC 93 - 91 00 FC A6 - 11 00 FD C7 - 91 00 FD DA    ................
2D40  11 00 FE C5 - 91 00 FE D8 - 11 00 FF 60 - 91 00 FF 73    ...........`...s
2D50  11 00 FF FB - 91 00 00 0E - 11 00 00 60 - 91 00 00 73    ...........`...s
2D60  11 00 00 FB - 91 00 01 0E - 11 00 02 2F - 91 00 02 42    .........../...B
2D70  11 00 02 5E - 91 00 02 71 - 11 00 02 96 - 91 00 02 A9    ...^...q........
2D80  11 00 03 94 - 91 00 03 A7 - 11 00 04 2F - 91 00 04 42    .........../...B
2D90  11 00 04 5E - 91 00 04 71 - 11 00 04 96 - 91 00 04 A9    ...^...q........
2DA0  11 00 05 5E - 91 00 05 71 - 11 00 05 F9 - 91 00 06 0C    ...^...q........
2DB0  11 00 06 94 - 91 00 06 A7 - 11 00 06 F9 - 91 00 07 0C    ................
2DC0  11 00 07 94 - 91 00 07 A7 - 11 00 08 92 - 91 00 08 A5    ................
2DD0  11 00 08 F7 - 91 00 09 0A - 11 00 09 C8 - 91 00 09 DB    ................
2DE0  11 00 09 F7 - 91 00 0A 0A - 11 00 0A 2F - 91 00 0A 42    .........../...B
2DF0  11 00 0A 94 - 91 00 0A A7 - 11 00 0B 2F - 91 00 0B 42    .........../...B
2E00  11 00 0C 2D - 91 00 0C 40 - 11 00 0C C8 - 91 00 0C DB    ...-...@........
2E10  11 00 0C F7 - 91 00 0D 0A - 11 00 0D C8 - 91 00 0D DB    ................
2E20  11 00 0D F7 - 91 00 0E 0A - 11 00 0E 92 - 91 00 0E A5    ................
2E30  11 00 0E F7 - 91 00 0F 0A - 11 00 0F 2F - 91 00 0F 42    .........../...B
2E40  11 00 0F 94 - 91 00 0F A7 - 11 00 10 92 - 91 00 10 A5    ................
2E50  11 00 11 2D - 91 00 11 40 - 11 00 12 2B - 91 00 12 3E    ...-...@...+...>
2E60  11 00 14 C7 - 91 00 14 DA - 11 00 15 2C - 91 00 15 3F    ...........,...?
2E70  11 00 16 F9 - 91 00 17 0C - 11 00 18 2D - 91 00 18 40    ...........-...@
2E80  11 00 18 92 - 91 00 18 A5 - 11 00 1B C7 - 91 00 1B DA    ................
2E90  11 00 1D 5E - 91 00 1D 71 - 11 00 1E C8 - 91 00 1E DB    ...^...q........
2EA0  11 00 1E F7 - 91 00 1F 0A - 11 00 22 2C - 91 00 22 3F    ..........",.."?
2EB0  11 00 23 F9 - 91 00 24 0C - 11 00 26 F8 - 91 00 27 0B    ..#...$...&...'.
2EC0  11 00 29 F7 - 91 00 2A 0A - 11 00 2A 2F - 91 00 2A 42    ..)...*...*/..*B
2ED0  11 00 2B 90 - 91 00 2B A3 - 11 00 2B C8 - 91 00 2B DB    ..+...+...+...+.
2EE0  11 00 2D 5F - 91 00 2D 72 - 11 00 30 5E - 91 00 30 71    ..-_..-r..0^..0q
2EF0  11 00 31 2F - 91 00 31 42 - 11 00 31 5E - 91 00 31 71    ..1/..1B..1^..1q
2F00  11 00 33 C4 - 91 00 33 D7 - 11 00 35 C7 - 91 00 35 DA    ..3...3...5...5.
2F10  11 00 36 FB - 91 00 37 0E - 11 00 37 60 - 91 00 37 73    ..6...7...7`..7s
2F20  11 00 37 FB - 91 00 38 0E - 11 00 38 F9 - 91 00 39 0C    ..7...8...8...9.
2F30  11 00 3A 2D - 91 00 3A 40 - 11 00 3B 2B - 91 00 3B 3E    ..:-..:@..;+..;>
2F40  11 00 3B C6 - 91 00 3B D9 - 11 00 3C 2B - 91 00 3C 3E    ..;...;...<+..<>
2F50  11 00 3D 5F - 91 00 3D 72 - 11 00 3E F6 - 91 00 3F 09    ..=_..=r..>...?.
2F60  11 00 40 2A - 91 00 40 3D - 11 00 40 FB - 91 00 41 0E    ..@*..@=..@...A.
2F70  11 00 41 2A - 91 00 41 3D - 11 00 41 C5 - 91 00 41 D8    ..A*..A=..A...A.
2F80  11 00 42 2A - 91 00 42 3D - 11 00 42 FB - 91 00 43 0E    ..B*..B=..B...C.
2F90  11 00 43 60 - 91 00 43 73 - 11 00 43 C5 - 91 00 43 D8    ..C`..Cs..C...C.
2FA0  11 00 44 60 - 91 00 44 73 - 11 00 44 C5 - 91 00 44 D8    ..D`..Ds..D...D.
2FB0  11 00 45 60 - 91 00 45 73 - 11 00 45 C5 - 91 00 45 D8    ..E`..Es..E...E.
2FC0  11 00 46 2A - 91 00 46 3D - 11 00 46 C5 - 91 00 46 D8    ..F*..F=..F...F.
2FD0  11 00 48 92 - 91 00 48 A5 - 11 00 48 F7 - 91 00 49 0A    ..H...H...H...I.
2FE0  11 00 49 5C - 91 00 49 6F - 11 00 4A 2D - 91 00 4A 40    ..I\..Io..J-..J@
2FF0  11 00 00 00 - 00 00 00 00 - 00 00 00 00 - 00 00 00 00    ................
Objectively speaking, there doesn't seem to be a whole heck of a lot going on before serial data starts in.

 
Hi, haven't had a chance to clean and check the HD20 since it arrived, let alone try the 400K data cable. Three new cats added to the household is more than "entertaining" enough, hopefully I can get some quality time with my Macorabilia next weekend.

 
It should be possible to replicate these signals at least, I know I could make the Mac smile with no disk drives or hard drives attached this way, but we want to make sense of this stuff so we can have a read/write disk.

I've been looking at GCR. It isn't too particularly complicated, you basically have to time things out and use the one of the tables here:

http://en.wikipedia.org/wiki/Group_code_recording

BUT I saw something that frightened me a bit on page 12 of this PDF (printed page 6):

http://www.brutal-deluxe.fr/documentation/iwm/apple2_IWM_Spec_Rev19_1982.pdf

Under WRDATA, it says "a transition occurs on this output for each one bit". WTF?? Does this mean that it's GCR'd AND THEN encoded again?? That doesn't make sense to me, it seems that GCR is the format sent and received directly on the magnetic media. Maybe I'm not reading this right, but to me this means:

Original Data:

1010 1011 1001 0110 1010

GCR'ed Data:

11010 11011 11001 10110 11010

Encoded again with a transition for each 1:

10010 01001 01000 10010 01000

Somebody please talk some sense into me, this can't be right. "a transition occurs on this output for each one bit" must mean something else, maybe it's describing GCR itself somehow.

 
Somebody please talk some sense into me, this can't be right. "a transition occurs on this output for each one bit" must mean something else, maybe it's describing GCR itself somehow.
Click to expand...
Based on the discussion regarding how the input clock affects the "bit cell" length and other reading of the "theory of operation" section preceding that statement my guess on how to interpret it is that the output on the /WRDATA line is in the form of *strobes*, and "a transition occurs on this output for each one bit" means that if the bit is a one it strobes, if it's a zero it doesn't. The strobe is the "transition".

(Actually, if you read the whole document that pretty much has to be how it works based on the description of how data is *read*.)

Anyway. To go way back in this discussion and how it applies to understanding how to generate and extract data from the disk interface: Have you considered putting your snoop cable inline with an external floppy disk drive and executing some controlled tests there? (Such as reading or writing a trivial ASCII text file?) The Mac filesystem is pretty well documented and the floppy drive is dumb. In such an arrangement you can be looking for *known* data, thus vastly simplifying the task of writing a program for your microcontroller which can make it able to intelligently snoop on IWM "conversations". By banging straight on the HD-20 you've put yourself the position of trying to "learn the language" of the HD-20, which is unknown, at the same time you're struggling with getting your ear to reliably detect the phonemes used to pronounce said language. If you teach your test rig how to snoop on a floppy drive you'll be way ahead in trying to reverse-engineer the HD-20 command set.

(Again, totally just a suggestion.)

 
Very very good idea with the floppy drive stuff.

With the strobing, that makes good sense. It explains the all the 13-tick samples I got. If the serial runs at 500 kbps, aka 500 kHz, then each bit has a 48 tick window. From this, I gather that a strobe is commonly about 0.5 µs, whereas the window for a serial bit is 2 µs.

Even though I am stabbing a bit at deciphering some serial data, I think it is equally important to figure out some more signal characteristics. For example, I could feed some data to the Mac that I've observed from and HD 20 and observe how it reacts to interruptions or variations in timing. I can also emulate the HD 20 to the point of a happy mac icon. This will double-check a lot of physical characteristics. It maybe provides us with a sense of false hope, but it is easy to do and allows me to strategically substitute in logical methods for regurgitation of unknown data. I can nail down what things I have to wait for from the Mac, what things the Mac waits for, etc.

 
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