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Duo 2300c/180 MHz 603e QFP Graft/Hack . . .

Yup! the Docking Connector isn't the problem, it's well documented, it's the connections between the ASICs on the 1400 and the PARTIAL docking connnector (16 bit?) that the T-Rex card cage interconnect represents.

 
Well, if so, then what I said still stands as a viable attack method.

Time consuming and difficult, YES. but is it feasable, YES. :-)

Any better ideas?

of course we are gonna obviously need the PCMCIA system enabler and drivers. If ROM doesnt support PCMCIA, we cant boot from, unlike the 520/540.

 
Well, if so, then what I said still stands as a viable attack method.
I've been working on it along those lines on and off for a VERY long time! ;)

. . . then you can adapt the cage to ANY 030 PDS buss.
SHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! That part was supposed to be a surprise! :lol:

 
I guess easiest thing is to get VCCs and GNDs out of the way. lol. And work with whats left.

But this means that any machine with an 030 PDS bus, we can have orinocco wireless :-)

But unless we emulate the t-rex with a new CPLD, we eventually are gonna run out of cages.

 
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Oh well. :-x

BTW, I've got one BiG@$$ spreadsheet somewhere called the RosettaStoneProject that lists the pin/signals of every flavor of 030 PDS slot, bridged or unbridged, that Apple ever managed to torque outta' shape.

 
Well before i get too carried away, i have to finish the AVR SCSI project, but i think the cardcage thing would actually work out better. MAYBE.

Well, for machines that we cant directly access the PDS, we can "force" a PDS, such as the PB1XX series. find and tap into all the address/Data lines and run wires.

 
BTW we skewed this thread, WAYYYYY out of topic, but hey its fun.
::) Whatever gave you the idea that any of my threads EVER stayed on topic? :lol:

Tangential spinoff is the way some of the best interactions happen around here! :approve:

 
Well, i got my gears spinning now. Going to have to sleep on this food for thought and see what i come up with. I have to get up early for work in the AM. In the meantime, i just sent in a small donation because i love this site. lol.

 
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. . . of course we are gonna obviously need the PCMCIA system enabler and drivers. If ROM doesnt support PCMCIA, we cant boot from, unlike the 520/540.
The Duo has it all in ROM, remember Apple announced a PCMCIA Dock and then didn't deliver, even after Newer had done the Design and had the Tooling done for the PCMCIA UltraDock. They wound up just using it for everything BUT housing the T-Rex/Card Cage.

I wouldn't be at all surprised if the 1400, 5300 and 2300 all use what is basically the same ROM, because they're very close being different packaging of the the same machine, IIRC. The Duo 2300c was released with the PB 1400, if memory serves.

We'll probably have to cook up a Dock DeclROM to do it though, but that's fairly well documented . . .

. . . for an Apple product/spec. ::)

 
Dock DeclROM? only if the dock PDS is on a different interrupt vector level or something than the original TREX driver requires it to be.

But if its in ROM, then it should already be there. just load the PCMCIA driver and go.

 
You might be right, however, while I'm at it, it sure would be nice to lie to the friggin' thing, so I can uncouple the ^&%$^#%$# left and right speaker channels . . .

. . . among other juicy little tidbits I'v been working on/whittling away at . . . lo, these many years! }:)

Muahahahahahhahahahaaaaaaaaa!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! :lol:

 
i know how these "many years" things goes. there are soo many projects I need to complete myself and never have.

I had an RC lawnmower that was all electric, i made from scratch. control circuitry, remote, all of it. took me 2 years until i got it done. finally got it done, had some bugs and other similar issues, but overall it worked ok. it cut the lawn. and i didnt have to physically ride or push it. LOL.

But it burned up in a fire. since the cutting deck was home made out of wood, the drunks decided to burn it in a fire. NICE. :disapprove: (i live in a boarding house environment)

couple of other unfinished projects is a set-top audio spectrum analyzer which i still need to finish, using soviet VFD display tubes.

I also need to finish the MP3 player that uses SD storage, and uses another VFD as its display tube. has a VU meter, and 14 segment alphanumeric. VS1001 decoders are hard to come by, which is why it never got finished.

I made an encrypted cordless phone that worked for awhile and eventually something went screwy in the modem and i never got around to fix it. I used a standard cordless phone with a 24kbit AAC (i think) codec IC, and scrambled the 512-byte stream buffer with a 512bit RSA key in an ATmega128. it worked great. ;-) only major pitfall is the phone ONLY worked if the other person had the same phone, and the audio quality was TERRIBLE, but that was the fastest i could go, as the phone line bandwidth is obviously limited so the modulator couldnt go any faster. it was running fast enough support the 24kbit AAC, I also had to use a 5 block size buffer, not only becuase the encryption took a little while, the audio was choppy. the buffer fixed the choppy audio, but increased the lag time. i didnt care as long as audio wasnt choppy.

the modulator/demodulator consisted of XR2204 AFSK decode/Encode ICs, if memory serves. it was AFSK hot all the time. The "magic" (modulator/scrambler/encoder) sat in between the microphone and the MIC amplifier on the handset. I had to remove the low pass filters to get the entire bandwidth of the handset. Same thing with the earpiece. the demodulator sat in between the earpiece and the amplifier on the handset.

This also meant i couldnt hear plaintext or analog sounds. ONLY the modulated sounds. so i coudlnt hear DTMF tones, or dialtones. just hope like hell it worked. hehe. and it always did. If someone picked up the phone, it would sound like the old time fax machines on the line. lol. I never added a mixer circuit so I could hear the analog as well as digital, and once the Exar IC locked, it would "disable" the analog mix path. it would have been simple to do, just didnt bother. Another cumbersome setback was I had to turn off the MIC modulator while i was dialing, or the "AFSK noise" would interfere and cause issues dialing. But no big deal, after i dialed the phone i would switch the modulator on.

me and a buddy of mine would call each other and use them all the time, and not have to worry about eavesdroppers. Then he passed away, and the project died, never did fix the issue. as he had the other handset.

Before he passed away, the future plans were to fix those issues, and add new ones, such as modulating ASCII text transmissions, so i would know "who" was calling besides what the caller ID said. But i dunno if the PSTN would transmit anything unless the other end "picked up" so it probably wouldnt work until i picked up the phone anyway. I would have also added the ability to change keys on the fly, as I would set my phone up as a master phone, transmit the key to the secondary phone and "rotate keys" for each call or something. Bad thing about that would be, unless i could encrypt the key that i transmit, the encryption could be broken.

 
:O About 90% of the technical end of that phone phreakin' $#!+ went . . .

< Peanut Mode >

eeeerrrrwwwwwtttttttt!!!!!!!!!!!!!!!!!!!!

< /Peanut Mode >

. . . right over my head! :I

Sounds way cool though! :approve:

Cripes! You sound nuttier than me . . . and that's goin' a fer piece! The only thing I ever wanted to do that'd p1$$ off the NSA was to write a one time pad encryption routine that'd use specific AOL installation CD releases as generally available, non transmitted, Digital One Time Pad Keys . . .

. . . and you're doing that kind of crap over the phone lines!!!!!!!!!!!!!!!!!!!!!! 8-o

Yeah, I know, waaayyyyyy too much Clancy in my noggin's bibliography, but not enough Programming Texts ( I have a love/hate relationship with coding . . . with a major league side order of procrastination and laziness as garnish [;)] ]'> ) to do anything really useful. So I mull things over and think up outlandish hardware hacks and try to pull 'em off without resorting to programming!

Necessity may be the "mother of invention," but creative laziness and tomfoolery are the "whacked out uncles" of invention . . .

. . . that none of the respectable members of the family ever talk about! }:) ;) :beige: :o)

 
Chip's here, pics are up!

Spent a bit of time with the digital camera yesterday after picking the CPU Card from the Complex Rental Office the evening before.

ppc603evfb180r01.jpg


I've got some more things and materials to order/scrounge up, along with some other victims coming in for practice runs before I start doing SMT rework on this lil' puppy. So don't expect results to be posted very soon, I'll be taking my time.

As a side note: thee has been some real progress on the SuperDuo front!

I finally had a chance to test something I've wanted to check out ever since the inception of the 2300cG3 project . . .

superduoflexcircuit02.jpg.bb3c99152d8f97a5d2b90f1b7a62abce.jpg


. . . and it fits!

Next experiment: Check to see if Sonnet's NuBus Accelerator will run reliably on the end of its matching PDS extension cable. }:)

 
oh jeebus. NOW we are in trouble......... hahaha.

that 603 is pretty. wish i had one, that CPU pitch is the same pitch of the SCSI transceivers from TI that i just soldered down on the AVR SCSI board.

ive got 2 duo 2300s. one of them is a real 2300 missin some parts (side rubbers) and torn trackpad cable.

and the other one is a duo 280c upgraded 2300 (complete minus SCSI HDD)

 
I got a 7100 from a friend of a friend who used it in college and wanted to find it a good home! }:)

I haven't done anything drastic yet, but I set up the Upgrade on a Stick (PDS extension cable above) test in it, (didn't wanna risk either my Radius 81/110 or the extra board for it) mounted a fan to blow air in for cooling where I had it flopped over the carrier card and . . .

cabletestfailure.jpg.e7ce0125059ab50c7ae5a16e78669183.jpg


. . . no joy at all. :'(

Works fine in the slot, but not hangin' out onna' limb. :p

I'll give Sonnet a call, it might just be be an addressing/slot assignment issue, but somehow I don't think two adapter boards and this Flex Circuit are going to be the simplified solution I was looking for.

SuperDuo is gonna take a bit more thinkin' n researchin', BLEH! :disapprove:

 
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