Photo Request : 5500, 6500 and TAM Logic Board

joevt · Dec 5, 2025

For 6500 and some other Macs, mac-io needs to be replaced with the actual device path for the OHare chip.
For the 5500/6500/TAM it should be pci1/ohare
I updated the script in the probe-ids.txt.zip attachment.

joevt · Dec 5, 2025

Ok, this one should work.

I switched to using find-package because dev and find-device do extra stuff like output a beep on failure or change the active-package which we don't need to do.
But find-package doesn't know about device aliases on B&W G3 so I have to get the mac-io alias manually from the /aliases node.

find-package on 5500/6500/TAM is ok with paths that use a device alias (such as pci1/ohare).

MacJunky · Dec 6, 2025

Okay, here is what my 6500 spit back out using dl and the latest revision of your script.

Code:

F3000034: E0 30 10 7A :.0.z:
70345261
10141211
30341221
E0A4C2E1

joevt · Dec 6, 2025

MacJunky said:
Okay, here is what my 6500 spit back out using dl and the latest revision of your script.

Thanks for that. The info should allow DingusPPC to get the gazelle ROM to select the correct ProductInfo for a pm6500.

Code:

calcids () {
    local ohareid=$1
    local idoffset=0
    for theids in fp mon mb cpu; do
        id0=${ohareid:0+$idoffset:2}
        id4=${ohareid:0+$idoffset+2:2}
        id2=${ohareid:0+$idoffset+4:2}
        id1=${ohareid:0+$idoffset+6:2}
        ((idoffset+=8))
        printf "%4s_id: %s %s %s %s %03X\n" $theids $id0 $id4 $id2 $id1 $(( ((0x$id0 & 0x70) << 2) | (0x$id4 & 0x30) |  ((0x$id2 & 0x40) >> 3) |  ((0x$id2 & 0x10) >> 2) | ((0x$id1 & 0x60) >> 5) ))
    done
}


# real Power Mac 6500 from @MacJunky 
# 6500/225. It has 8MB RAM soldered onboard, overclocked to 300MHz.
# It also has a non-functional Rage Pro Turbo PCI chip soldered onto it.

calcids 703452611014121130341221E0A4C2E1
  fp_id: 70 34 52 61 1FF
 mon_id: 10 14 12 11 054
  mb_id: 30 34 12 21 0F5
 cpu_id: E0 A4 C2 E1 1AB


# DingusPPC pm6500

calcids 707070701010101030303030F0F0F0F0
  fp_id: 70 70 70 70 1FF
 mon_id: 10 10 10 10 054
  mb_id: 30 30 30 30 0F5
 cpu_id: F0 F0 F0 F0 1FF


          ; table of ProductInfo.CPUIDValue and extended CPU_ID pairs
FFC15230: 3024 0054
FFC15234: 3024 01FF ; DingusPPC pm6500 has this extended CPU_ID of 01FF which is wrong.
FFC15238: 3023 0000
FFC1523C: 3023 01AB ; a real Power Mac 6500 should return this CPUIDValue
FFC15240: 302B 01DF
FFC15244: 302C 01FB
FFC15248: 302D 015E
FFC1524C: 302E 01D7
FFC15250: 302F 00F5
FFC15254: 303C 018B
FFC15258: 0000 0000
FFC1525C: 0000 0000

@powermax extracted these CPUIDValues from the gazelle ROM:

Code:

CPUID  BoxFlag  gestaltMachineType  definition
---------------------------------------------------------
$303C  $1FB     507 + 6 = 513       gestaltPowerMac6500
$302E  $1FA     506 + 6 = 512       gestaltPowerMac5500
$3024  $1FA     506 + 6 = 512       gestaltPowerMac5500
$302B  $1FA     506 + 6 = 512       gestaltPowerMac5500
$3023  $1FB     507 + 6 = 513       gestaltPowerMac6500
$302D  $1FA     506 + 6 = 512       gestaltPowerMac5500
$302C  $1FA     506 + 6 = 512       gestaltPowerMac5500
$3023  $34      52  + 6 = 58        gestaltPowerMac6400
$3024  $44      68  + 6 = 74        gestaltPowerMac5400
$302B  $4C      76  + 6 = 82        unknown????? // boxRiscCentris650 (76)
$302C  $44      68  + 6 = 74        gestaltPowerMac5400
$302E  $44      68  + 6 = 74        gestaltPowerMac5400
$302D  $44      68  + 6 = 74        gestaltPowerMac5400
$3020  $3D      61  + 6 = 67        gestaltPowerMac9500
$3021  $3E      62  + 6 = 68        gestaltPowerMac7500
$3022  $3F      63  + 6 = 69        gestaltPowerMac8500
$3001  $66      102 + 6 = 108       gestaltPowerMac7200

Looks like $3023 is the one that we want.
Anyone have a 6500 that uses $303C or returns cpu_id values that differs from those of @MacJunky ?

You can see these values in the Universal Tables that is dumped by my GitHub forks
68k-mac-rom-maps rom_fiend HexFiend

Code:

gestaltPowerMac6500 (513) ; Unknown (0x303C)
gestaltPowerMac5500 (512) ; Jumanji (cpuIDRISC|$302E) (0x302E)
gestaltPowerMac5500 (512) ; Unknown (0x3024)
gestaltPowerMac5500 (512) ; Zanzibar (cpuIDRISC|$302B) (0x302B)
gestaltPowerMac6500 (513) ; Unknown (0x3023)
gestaltPowerMac5500 (512) ; Zanzibar with hard power (cpuIDRISC|$302D) (0x302D)
gestaltPowerMac5500 (512) ; Zanzibar with SuperDrive (cpuIDRISC|$302C) (0x302C)
InfoWombat20
boxPDMEvt1 (68), gestaltPowerMac5400 (74) ; Unknown (0x3024)
boxRiscCentris650 (76) ; Zanzibar (cpuIDRISC|$302B) (0x302B)
boxPDMEvt1 (68), gestaltPowerMac5400 (74) ; Zanzibar with SuperDrive (cpuIDRISC|$302C) (0x302C)
boxPDMEvt1 (68), gestaltPowerMac5400 (74) ; Jumanji (cpuIDRISC|$302E) (0x302E)
boxPDMEvt1 (68), gestaltPowerMac5400 (74) ; Zanzibar with hard power (cpuIDRISC|$302D) (0x302D)
InfoTNTProto1
boxTesseractF (62), gestaltPowerMac7500 (68) ; PowerMac 7300 (cpuIDRISC|$3021) (0x3021)
boxTesseractC (63), gestaltPowerMac8500 (69) ; PowerMac 7600/8600/9600 (cpuIDRISC|$3022) (0x3022)
boxRiscQuadra610 (102), gestaltPowerMac7200 (108) ; PowerMac 7200 (cpuIDRISC|$3001) (0x3001)

Now we just need results from TAM, 5500, 5400, etc.

Could this info have been extracted from the schematics? Maybe. For the cpu_id part of the ID, we see that the probing algorithm sets the output of each of 3 pins to 0 in turn and the result is that pin should be read back as 0, at least in the case of a real Power Mac 6500. i.e. Without setting any of the 3 pins to 0, we get 110. Setting bit 2 to 0 should return 010. Setting bit 1 to 0 should return 100. Setting bit 0 to 0 should return 110 (no change since it's always 0).

Why does DingusPPC return 111 for the cpu_id bits? It thinks that an `emmo` input is connected to bit 0 like on Power Mac G3.

joevt · Dec 6, 2025

joevt said:
Could this info have been extracted from the schematics? Maybe.

Probably not. I don't see in the schematic how CPU_ID0 is set to 0 unless R165 is removed? Well, I don't think anyone's shown a photo of that location on a pm6500 yet. The photo at #12 is for a 5500.

MacJunky · Dec 6, 2025

joevt said:
Probably not. I don't see in the schematic how CPU_ID0 is set to 0 unless R165 is removed? Well, I don't think anyone's shown a photo of that location on a pm6500 yet. The photo at #12 is for a 5500.

You probably don't need this anymore, but if anyone is interested...

joevt · Dec 6, 2025

joevt said:
Why does DingusPPC return 111 for the cpu_id bits? It thinks that an `emmo` input is connected to bit 0 like on Power Mac G3.

According to the code in HWInit of gazelle ROM, the emmo pin is connected to CPU_ID2 instead of CPU_ID0.
The emmo pin starts the Serial Test Manager which exists in many (all?) Power Mac ROMs. The string "Serial Test" exists starting from the first PCI Mac to the last 32-bit New World Mac ROM. Maybe it has a different name in the 64-bit New World ROMs. If it exists in earlier ROMs, it might not have a menu.

MacJunky said:
You probably don't need this anymore, but if anyone is interested...
View attachment 93086

R165 exists so CPU_ID should be pulled high so maybe CPU_ID0 is pulled low by whatever J18 "DirectConnect" (MLB system connector) is connected to? What is DirectConnect connected to?

MacJunky · Dec 7, 2025

R165 is tied to ground through the chassis harness and Monitor Out Board. Actually this may or may not be of note... I don't have a 6500's Monitor Out Board, the one I'm using is from a Performa 631CD. My chassis harness is PN: 590-9997 and was advertised as being from a 6400. I haven't had the case and harness that my 6500 logic board came in for quite some time.

joevt · Dec 7, 2025

MacJunky said:
R165 is tied to ground through the chassis harness and Monitor Out Board. Actually this may or may not be of note... I don't have a 6500's Monitor Out Board, the one I'm using is from a Performa 631CD. My chassis harness is PN: 590-9997 and was advertised as being from a 6400. I haven't had the case and harness that my 6500 logic board came in for quite some time.
View attachment 93092 View attachment 93094

I see that the cables from the motherboard that you show in #46 for the non-SCSI side of the top half of J18 (S1 to S50) has a 6 line cable for S1 to S6 and a 34 line cable for S7 to S40 and a 7 line cable from S? to S?+6 (where S?+6 ≤ S50 probably S44 to S50)?
Anyway, BOXID0 is S18 which is line 12 of the 34 line cable which you have marked in the above picture.

Do you think the 6500's Monitor Out Board is similar to that of the Performa 631CD?

I can't find documentation or images for 590-9997.

There is a note on the schematics on sheet 22 for BOXID0 which says something like "Grounds signals from 3.3V to 5V" though the first word is hard to read. BOXID1 and BOXID2 have capacitors to ground C434 and C435 but the capacitor to ground for BOXID0 C430 says "NO STUFF" which means it doesn't exist?

MacJunky · Dec 7, 2025

Unfortunately I can't find my own pictures of my 6500's old Monitor Out Board. Zone6400 used to host a picture for differentiating between the 6400's 922-2547 and 6500's 922-2996 boards. I've attached it for reference.

The 590-9997 harness I have now is as far as I can remember basically identical in appearance to what was in my 6500, though I don't think I had that one fully out of that particular case. The part number is printed on the IDE cable.

I don't think Page 22 of the schematic says C430 is "NO STUFF", I think that message is for C130, as it also specifies the same for C131 and C132. On my board I have C430 stuffed, and C130-C132, C440 not stuffed as per the schematic.

pizzigri · Dec 8, 2025

At home I basically have every AV board made, I have to track it down and I can post pictures.

pizzigri · Dec 8, 2025

Argh, cannot fined the box where I buried those AV boards.
A question not related, but what does VT-A and VT-B mean on page 16 of the schematic? It specifies whether one or another R or C is stuffed, I have both a 5500 and a 6500 and both are VT-B according to what R is stuffed.
Last but not least, there seems to be a third rev of the 6500 board, that uses a slightly different layout (i.e at least one electrolithic cap is replaced by a tantalum) and also uses an updated video chip.

pizzigri · Dec 8, 2025

MacJunky said:
That's my 6500/225. It has 8MB RAM soldered onboard, and I currently have it overclocked to 300MHz. It also has a non-functional Rage Pro Turbo PCI chip soldered onto it and is utilizing a Radeon 7000 as main display graphics card.

Stupid question I know, but the Pro you soldered had all the correct resistor switched to power it at 3.3V right? Since I also am going to attempt this I just wanted to be sure.

joevt · Dec 8, 2025

pizzigri said:
A question not related, but what does VT-A and VT-B mean on page 16 of the schematic? It specifies whether one or another R or C is stuffed, I have both a 5500 and a 6500 and both are VT-B according to what R is stuffed.

ATI graphics chips have PCI vendor ID 0x1002 and a device ID that usually composes of two ASCII characters.

Code:

0x4750, // GP (Rage Pro)
0x4754, // GT (Rage II)
0x4756, // GW (Rage IIc)
0x4758, // GX
0x5654, // VT

I guess VT-A and VT-B are two types of ATI graphics chips with device ID 0x5654?

The letters don't always match the product name though:
https://admin.pci-ids.ucw.cz/read/PC/1002

Code:

4654 FT Mach64 VT
5354 ST Mach 64 VT
5654 VT Mach64 VT [Video Xpression]
5655 VU 264VT3 [Mach64 VT3]
5656 VV Mach64 VT4 [Video Xpression+]

A Rage 128 document at bitsavers explains that VT-A and VT-B are two versions of a chip with device ID for VT.
https://bitsavers.computerhistory.org/components/ati/Rage_128/Rage_128_GC_Spec.pdf
I don't know if the markings on the chips indicate which version it is:
https://www.ardent-tool.com/video/ATI_Chip_Markings.html

Besides components marked [A] or [B] in the 6500 schematic on sheet 16 are resistors marked [X] which have different values for GT-A2, VT-B, and GT-B but it doesn't say what to use for VT-A?

If you have a serial cable, then maybe you can dump some info from your 5500 or 6500 or other OHare/Heathrow/Paddington machines:
probe-ids:
https://68kmla.org/bb/index.php?thr...00-6500-and-tam-logic-board.46450/post-576941
lspci for Open Firmware, dump-device-tree, etc.:
https://tinkerdifferent.com/threads/apple-network-server-macos-based-roms-found.4756/post-42356

MacJunky · Dec 9, 2025

pizzigri said:
Stupid question I know, but the Pro you soldered had all the correct resistor switched to power it at 3.3V right? Since I also am going to attempt this I just wanted to be sure.

I went through and changed resistors and checked voltages before swapping the chip. The original still ran during this process. I also populated LC Filter [A] connected to PLLVDD using parts from the PCI card.

Perhaps I should have done a larger dump earlier?

Code:

0 > unselect-dev  ok
0 > dl  ok
0 >   ok
0 > dev pci1  ok
0 > lspci
00:0B.0         [106B:0001] [060000] 6B100100160080220300000608200000000000000000000000000000000000000000000000000000000
00:0E.0         [1002:5159] [030000] 02105951840090020000000308200000080000880104000000008180000000000000000000000000000
                                     00007010:88000008.F8000008
                                     00007014:00000401.FFFFFF01
                                     00007018:80810000.FFFF0000
                                     00007030:80820000.FFFE0001
00:10.0         [106B:0007] [FF0000] 6B10070016000082020000FF08200000000000F30000000000000000000000000000000000000000000
                                     00008010:F3000000.FFF80000
00:11.0         [1011:0014] [020000] 11101400040080021100000200200000010400000000808000000000000000000000000000000000000
                                     00008810:00000401.FFFFFF81
                                     00008814:80800000.FFFFFF80
                                     00008830:80840000.FFFC0001
 ok
0 > dev pci2 can't find device ok
0 > dev / ls
FF828518: /PowerPC,603@0
FF828D90: /chosen@0
FF828F68: /memory@0
FF8290B0: /openprom@0
FF829170: /AAPL,ROM@FFC00000
FF829388: /options@0
FF829828: /aliases@0
FF829AC0: /packages@0
FF829B48:   /deblocker@0,0
FF82A270:   /disk-label@0,0
FF82A7E8:   /obp-tftp@0,0
FF82CA58:   /mac-files@0,0
FF82D178:   /mac-parts@0,0
FF82D8D8:   /aix-boot@0,0
FF82DD28:   /fat-files@0,0
FF82F340:   /iso-9660-files@0,0
FF82FCA8:   /xcoff-loader@0,0
FF830560:   /terminal-emulator@0,0
FF8305F8: /bandit@F2000000
FF831BE8:   /ohare@10
FF832478:     /mesh@10000
FF833FA0:       /sd@0,0
FF834B88:       /st@0,0
FF835800:     /escc@13000
FF835958:       /ch-a@13020
FF835F98:       /ch-b@13000
FF8365D8:     /awacs@14000
FF8366C0:     /swim3@15000
FF837820:     /nvram@60000
FF8378F0:     /ata@20000
FF838F10:     /via-cuda@16000
FF839B40:       /adb@0,0
FF839C30:         /keyboard@0,0
FF83A470:         /mouse@1,0
FF83A730:       /pram@0,0
FF83A7E0:       /rtc@0,0
FF83AC80:       /power-mgt@0,0
FF83B378:   /pci106b,1@B
FF83B550:   /ATY,BlueStar@E
FF851B60:   /pci1011,14@11
 ok
0 > devalias
pci1                /bandit@F2000000
fd                  /bandit/ohare/swim3
kbd                 /bandit/ohare/via-cuda/adb/keyboard
mouse               /bandit/ohare/via-cuda/adb/mouse
screen              /bandit/ATY,264GT
ttya                /bandit/ohare/escc/ch-a
ttyb                /bandit/ohare/escc/ch-b
scsi                /bandit/ohare/mesh
scsi-int            /bandit/ohare/mesh
ata                 /bandit/ohare/ata
ata-int             /bandit/ohare/ata
 ok
0 >
0 > dump-device-tree
/
PROPERTIES:
name                    device-tree
model                   Power Macintosh
compatible              AAPL,e411
                        MacRISC
AAPL,cpu-id             10000000
#address-cells          00000001
#size-cells             00000001
clock-frequency         02FAF080

METHODS:
make-cpu-properties             dma-sync        dma-map-out     dma-map-in      dma-free
dma-alloc       map-out         map-in          decode-unit     close           open
?pdm

/PowerPC,603@0
PROPERTIES:
name                    PowerPC,603
device_type             cpu
reg                     00000000  00000000
cpu-version             00071201
clock-frequency         10642AC0
timebase-frequency      00BEBC20
reservation-granularity 00000020
tlb-sets                00000020
tlb-size                00000040
d-cache-size            00004000
i-cache-size            00004000
d-cache-sets            00000080
i-cache-sets            00000080
i-cache-block-size      00000020
d-cache-block-size      00000020
existing                00000000 80000000 80000000 80000000
available               00000000 F2000000 F4000000 0B800000 FF900000 00300000
translations            F2000000 00010000 F2000000 00000028 F2800000 00001000 F2800000 00000028
                        F2C00000 00001000 F2C00000 00000028 F3000000 01000000 F3000000 00000028
                        F8000000 00001000 F8000000 00000028 FF800000 00100000 00400000 00000010
                        FFC00000 00400000 FFC00000 00000000

METHODS:
translate       modify          unmap           map             release         claim
close           open

/chosen@0
PROPERTIES:
name                    chosen
stdin                   FF8DA840
stdout                  FF8DA700
memory                  FF8DD840
mmu                     FF8DD900
bootpath                00
bootargs                00


/memory@0
PROPERTIES:
name                    memory
device_type             memory
reg                     00000000  08800000
available               00000000 00400000 00500000 08300000

METHODS:
release         claim           close           open

/openprom@0
PROPERTIES:
name                    openprom
model                   Open Firmware, 2.0.3
relative-addressing


/AAPL,ROM@FFC00000
PROPERTIES:
name                    AAPL,ROM
device_type             rom
reg                     FFC00000  00400000

METHODS:
load            open

/options@0
PROPERTIES:
name                    options
little-endian?          66616C73 6500
real-mode?              66616C73 6500
auto-boot?              74727565 00
diag-switch?            66616C73 6500
fcode-debug?            66616C73 6500
oem-banner?             66616C73 6500
oem-logo?               66616C73 6500
use-nvramrc?            66616C73 6500
real-base               FFFFFFFF
real-size               00100000
virt-base               FFFFFFFF
virt-size               00100000
load-base               00004000
pci-probe-list          FFFFFFFF
screen-#columns         00000064
screen-#rows            00000028
selftest-#megs          00000000
boot-device             2F414150 4C2C524F 4D00
boot-file               00
diag-device             66643A64 69616773 00
diag-file               00
input-device            74747961 00
output-device           74747961 00
oem-banner              00
oem-logo                00
nvramrc                 00
boot-command            626F6F74 00


/aliases@0
PROPERTIES:
name                    aliases
pci1                    2F62616E 64697440 46323030 30303030 00
fd                      2F62616E 6469742F 6F686172 652F7377 696D3300
kbd                     2F62616E 6469742F 6F686172 652F7669 612D6375 64612F61 64622F6B 6579626F
                        61726400
mouse                   2F62616E 6469742F 6F686172 652F7669 612D6375 64612F61 64622F6D 6F757365
                        00
screen                  2F62616E 6469742F 4154592C 32363447 5400
ttya                    2F62616E 6469742F 6F686172 652F6573 63632F63 682D6100
ttyb                    2F62616E 6469742F 6F686172 652F6573 63632F63 682D6200
scsi                    2F62616E 6469742F 6F686172 652F6D65 736800
scsi-int                2F62616E 6469742F 6F686172 652F6D65 736800
ata                     2F62616E 6469742F 6F686172 652F6174 6100
ata-int                 2F62616E 6469742F 6F686172 652F6174 6100


/packages@0
PROPERTIES:
name                    packages

METHODS:
open

/packages@0/deblocker@0,0
PROPERTIES:
name                    deblocker

METHODS:
empty-buffers   write           read            seek            close           open


/packages@0/disk-label@0,0
PROPERTIES:
name                    disk-label

METHODS:
load            offset          close           open            file-str        part-str
dma-free        dma-alloc       max-transfer    block-size      write-blocks    read-blocks


/packages@0/obp-tftp@0,0
PROPERTIES:
name                    obp-tftp

METHODS:
dma-free        dma-alloc       max-transfer    block-size      read-blocks     load
read            close           open

/packages@0/mac-files@0,0
PROPERTIES:
name                    mac-files

METHODS:
load            close           open

/packages@0/mac-parts@0,0
PROPERTIES:
name                    mac-parts

METHODS:
load            close           open

/packages@0/aix-boot@0,0
PROPERTIES:
name                    aix-boot

METHODS:
load            close           open

/packages@0/fat-files@0,0
PROPERTIES:
name                    fat-files

METHODS:
dir             load            open            close           read-blocks     seek
read            dma-free        dma-alloc       max-transfer    block-size

/packages@0/iso-9660-files@0,0
PROPERTIES:
name                    iso-9660-files

METHODS:
load            close           open            dir             read            offset
seek            read-blocks     block-size      dma-free        dma-alloc       max-transfer


/packages@0/xcoff-loader@0,0
PROPERTIES:
name                    xcoff-loader

METHODS:
init-program    close           open

/packages@0/terminal-emulator@0,0
PROPERTIES:
name                    terminal-emulator
iso6429-1983-colors


/bandit@F2000000
PROPERTIES:
name                    bandit
device_type             pci
model                   AAPL,343S1126
AAPL,interrupts         00000016
reg                     F2000000  02000000
#address-cells          00000003
#size-cells             00000002
clock-frequency         01FCA055
slot-names              0000E000 41310042 31004331 00
ranges                  02000000 00000000 F3000000  F3000000  00000000 01000000
                        01000000 00000000 00000000  F2000000  00000000 00800000
                        02000000 00000000 80000000  80000000  00000000 10000000
                        02000000 00000000 90000000  90000000  00000000 10000000
bus-range               00000000 00000000

METHODS:
encode-unit     decode-unit     dma-sync        dma-map-out     dma-map-in      dma-free
dma-alloc       map-out         map-in          close           open            probe-slots
req-io-addr     alloc-io-addr   align-io-addr   req-mem-addr    alloc-mem-addr  align-mem-addr
map-range       add-range       make-assigned-addresses         allocate-addresses
add-package     init-packages   config-l!       config-l@       config-w!       config-w@
config-b!       config-b@

/bandit@F2000000/ohare@10
PROPERTIES:
name                    ohare
device_type             dbdma
model                   AAPL,343S0172
reg                     00008000 00000000 00000000  00000000 00000000
                        02008010 00000000 F3000000  00000000 00100000
assigned-addresses      82008010 00000000 F3000000  00000000 00100000
ranges                  00000000  02008010 00000000 F3000000  00100000
#address-cells          00000001
#size-cells             00000001
vendor-id               0000106B
device-id               00000007
revision-id             00000002
class-code              00FF0000
min-grant               00000000
max-latency             00000000
devsel-speed            00000001

METHODS:
dma-sync        dma-map-out     dma-map-in      dma-free        dma-alloc       decode-unit
close           open            init-media-bay  enable-scsi-terminators

/bandit@F2000000/ohare@10/mesh@10000
PROPERTIES:
name                    mesh
device_type             scsi
model                   AAPL,343S1146
reg                     00010000  00000100
                        00008000  00000200
clock-frequency         02FAF080
AAPL,interrupts         0000000C 00000000
AAPL,connector          scsi

METHODS:
show-children   set-tid-lun     decode-unit     close           open            dma-sync
dma-map-out     dma-map-in      dma-free        dma-alloc       retry-cmd       error?
db-rem          do-cmd          reset-scsi      set-timeout     mesh-iooffset   mesh-dmaoffset


/bandit@F2000000/ohare@10/mesh@10000/sd@0,0
PROPERTIES:
name                    sd
device_type             block

METHODS:
load            write           read            seek            close           open
write-blocks    read-blocks     max-transfer    block-size      dma-sync        dma-map-out
dma-map-in      dma-free        dma-alloc

/bandit@F2000000/ohare@10/mesh@10000/st@0,0
PROPERTIES:
name                    st
device_type             byte

METHODS:
load            seek            close           open            write           read
write-blocks    read-blocks     block-size      max-transfer    write-eof       dma-free
dma-alloc       dma-sync        dma-map-out     dma-map-in

/bandit@F2000000/ohare@10/escc@13000
PROPERTIES:
name                    escc
device_type             escc
reg                     00013000  00001000
                        00008400  00000400
#address-cells          00000001
ranges

METHODS:
decode-unit     close           open

/bandit@F2000000/ohare@10/escc@13000/ch-a@13020
PROPERTIES:
name                    ch-a
device_type             serial
AAPL,connector          modem
reg                     00013020  00000020
                        00008400  00000100
                        00008500  00000100
AAPL,interrupts         0000000F 00000004 00000005

METHODS:
write           read            read-ahead      close           open

/bandit@F2000000/ohare@10/escc@13000/ch-b@13000
PROPERTIES:
name                    ch-b
device_type             serial
AAPL,connector          printer
reg                     00013000  00000020
                        00008600  00000100
                        00008700  00000100
AAPL,interrupts         00000010 00000006 00000007

METHODS:
write           read            read-ahead      close           open

/bandit@F2000000/ohare@10/awacs@14000
PROPERTIES:
name                    awacs
device_type             sound
reg                     00014000  00001000
                        00008800  00000100
                        00008900  00000100
AAPL,interrupts         00000011 00000008 00000009


/bandit@F2000000/ohare@10/swim3@15000
PROPERTIES:
name                    swim3
device_type             block
AAPL,connector          floppy
reg                     00015000  00001000
                        00008100  00000100
AAPL,interrupts         00000013 00000001

METHODS:
load            read            seek            eject           close           open
read-blocks     max-transfer    block-size      dma-sync        dma-map-out     dma-map-in
dma-free        dma-alloc

/bandit@F2000000/ohare@10/nvram@60000
PROPERTIES:
name                    nvram
device_type             nvram
reg                     00060000  00020000
existing                00000000 00002000


/bandit@F2000000/ohare@10/ata@20000
PROPERTIES:
name                    ata
device_type             ata
AAPL,connector          ata
compatible              ohare-ata
reg                     00020000  00002000
                        00008B00  00000200
AAPL,pio-timing         00000526 00000085 00000025 00000025 00000025 00000000 00000000 00000000
AAPL,interrupts         0000000D 00000002

METHODS:
dma-sync        dma-map-out     dma-map-in      dma-free        dma-alloc       decode-unit
close           open            ata-command     atapi-command   reset-atapi-bus reset-ata-bus
use-ata-interface               use-atapi-interface             set-timer       set-device-id


/bandit@F2000000/ohare@10/via-cuda@16000
PROPERTIES:
name                    via-cuda
device_type             cuda
reg                     00016000  00002000
AAPL,interrupts         00000012

METHODS:
get-mouse       read-kbd        close           open            read            write


/bandit@F2000000/ohare@10/via-cuda@16000/adb@0,0
PROPERTIES:
name                    adb
device_type             adb
AAPL,connector          adb

METHODS:
close           open

/bandit@F2000000/ohare@10/via-cuda@16000/adb@0,0/keyboard@0,0
PROPERTIES:
name                    keyboard
device_type             keyboard
reg                     00000000 00000000  00000000

METHODS:
read            close           open            reset           get-key-map

/bandit@F2000000/ohare@10/via-cuda@16000/adb@0,0/mouse@1,0
PROPERTIES:
name                    mouse
device_type             mouse
reg                     00000001 00000000  00000000
#buttons                00000001

METHODS:
get-event       close           open            mouse-button    mouse-dy        mouse-dx
old-button

/bandit@F2000000/ohare@10/via-cuda@16000/pram@0,0
PROPERTIES:
name                    pram
device_type             pram
reg                     00000000 00000000  00000000


/bandit@F2000000/ohare@10/via-cuda@16000/rtc@0,0
PROPERTIES:
name                    rtc
device_type             rtc
reg                     00000000 00000000  00000000

METHODS:
set-time        get-time        close           open

/bandit@F2000000/ohare@10/via-cuda@16000/power-mgt@0,0
PROPERTIES:
name                    power-mgt
device_type             power-mgt
reg                     00000000 00000000  00000000


/bandit@F2000000/pci106b,1@B
PROPERTIES:
name                    pci106b,1
vendor-id               0000106B
device-id               00000001
revision-id             00000003
class-code              00060000
min-grant               00000000
max-latency             00000000
devsel-speed            00000001
fast-back-to-back
reg                     00005800 00000000 00000000  00000000 00000000


/bandit@F2000000/ATY,BlueStar@E
PROPERTIES:
vendor-id               00001002
device-id               00005159
revision-id             00000000
class-code              00030000
interrupts              00000001
min-grant               00000008
max-latency             00000000
subsystem-vendor-id     00001002
subsystem-id            00000908
devsel-speed            00000001
fast-back-to-back
AAPL,interrupts         00000019
AAPL,slot-name          B1
fcode-rom-offset        00000000
EDID                    00FFFFFF FFFFFF00 04721100 06340082 14120103 682F1E78 2EC585A4 59499A24
                        125054BF EF008180 8140714F 9500950F B30081C0 A9402139 9030621A 274068B0
                        3600D928 1100001C 000000FD 00384C1E 5210000A 20202020 20200000 00FC0041
                        63657220 58323233 570A2020 000000FF 004C415A 30393034 37333631 300A00CB
ATY,Flags               0717029B
ATY,RefCLK              00006978
ATY,MCLK                00028870
ATY,SCLK                00028870
width                   00000320
height                  00000258
linebytes               00000400
depth                   00000008
display-type            43525400
device_type             display
character-set           49534F38 3835392D 3100
iso6429-1983-colors
reg                     00007000 00000000 00000000  00000000 00000000
                        02007030 00000000 00000000  00000000 00020000
                        42007010 00000000 00000000  00000000 08000000
                        02007018 00000000 00000000  00000000 00010000
name                    ATY,BlueStar
model                   ATY,RV100
ATY,Rom#                3131332D 38353530 352D3131 3000
ATY,Card#               3130392D 38353530 302D3030 00
ATY,Fcode               312E3836 00
driver,AAPL,MacOS,PowerPC
                        4A6F7921 70656666 70777063 00000001 B948891A 00000000 00000000 00000000
                        00030002 00000000 FFFFFFFF 00000000 0000C38C 0000C38C 0000C38C 000005B0
                        00040400 FFFFFFFF 00000000 00000EE8 00000EC0 00000B09 0000C940 02010400
                        FFFFFFFF 00000000 00000000 00000000 00000522 00000080 04040400 00000000
                        FFFFFFFF 00000000 FFFFFFFF 00000000 FFFFFFFF 00000000 00000004 00000027
                        00000001 00000140 00000158 000004F0 00000001 00000003 00000000 00000000
                        00000000 0000000D 00000000 00000000 00000010 00000000 00000000 00000012
                        0000000D 00000000 00000022 00000000 00000000 00000005 0000001F 00000000
                        ... 0000D449 bytes total
power-consumption       00000000 00000000
assigned-addresses      C2007010 00000000 88000000  00000000 08000000
                        82007030 00000000 80820000  00000000 00020000
                        82007018 00000000 80810000  00000000 00010000

METHODS:
close           restore         draw-logo       write           open            set-depth
disable-videomode               enable-videomode                show-modes      set-mode
mode#           ddc2ci-monitor-off              ddc2ci-monitor-on               ddc2-get-byte
ddc2-send-byte  ddc2-set-stop   ddc2-set-start  read-rectangle  draw-rectangle  fill-rectangle
get-colors      set-colors      color!          color@          dimensions

/bandit@F2000000/pci1011,14@11
PROPERTIES:
vendor-id               00001011
device-id               00000014
revision-id             00000011
class-code              00020000
interrupts              00000001
min-grant               00000000
max-latency             00000000
devsel-speed            00000001
fast-back-to-back
AAPL,interrupts         00000016
AAPL,slot-name          E1
name                    pci1011,14
reg                     00008800 00000000 00000000  00000000 00000000
                        01008810 00000000 00000000  00000000 00000080
                        02008814 00000000 00000000  00000000 00000080
                        02008830 00000000 00000000  00000000 00040000
power-consumption       00000000 00000000
assigned-addresses      81008810 00000000 00000400  00000000 00000080
                        82008830 00000000 80840000  00000000 00040000
                        82008814 00000000 80800000  00000000 00000080

 ok
0 >

joevt · Dec 9, 2025

MacJunky said:
Perhaps I should have done a larger dump earlier?

Code:

0 > unselect-dev ok 00:0B.0 [106B:0001] [060000] 6B100100160080220300000608200000000000000000000000000000000000000000000000000000000

I didn't ask for the rest before. I just figure while one is in there, why not gather the other info from Open Firmware as well?

The width of your output was truncated to 120 characters. What terminal app did you use to capture it? My lspci for Open Firmware requires width 550 or word wrap.

Most of the useful bytes were captured. If I append enough zeros, then these are the parsed results:

Code:

00:0b.0 Host bridge [0600]: Apple Inc. Bandit PowerPC host bridge [106b:0001] (rev 03)
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
	Latency: 32, Cache Line Size: 32 bytes

00:0e.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] RV100 [Radeon 7000 / Radeon VE] [1002:5159] (prog-if 00 [VGA controller])
	Control: I/O- Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 32, Cache Line Size: 32 bytes
	Region 0: Memory at 88000000 (32-bit, prefetchable) [disabled]
	Region 1: I/O ports at 0400 [disabled]
	Region 2: Memory at 80810000 (32-bit, non-prefetchable) [disabled]
	00007010:88000008.f8000008 Region 0: Memory at 88000000 (32-bit, prefetchable) [size=128M]
	00007014:00000401.ffffff01 Region 1: I/O ports at 0400 [size=256]
	00007018:80810000.ffff0000 Region 2: Memory at 80810000 (32-bit, non-prefetchable) [size=64K]
	00007030:80820000.fffe0001 Expansion ROM at 80820000 [disabled] [size=128K]

00:10.0 Unassigned class [ff00]: Apple Inc. O'Hare I/O [106b:0007] (rev 02)
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR+ INTx-
	Latency: 32, Cache Line Size: 32 bytes
	Region 0: Memory at f3000000 (32-bit, non-prefetchable)
	00008010:f3000000.fff80000 Region 0: Memory at f3000000 (32-bit, non-prefetchable) [size=512K]

00:11.0 Ethernet controller [0200]: Digital Equipment Corporation DECchip 21041 [Tulip Pass 3] [1011:0014] (rev 11)
	Control: I/O- Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 32
	Region 0: I/O ports at 0400 [disabled]
	Region 1: Memory at 80800000 (32-bit, non-prefetchable) [disabled]
	00008810:00000401.ffffff81 Region 0: I/O ports at 0400 [size=128]
	00008814:80800000.ffffff80 Region 1: Memory at 80800000 (32-bit, non-prefetchable) [size=128]
	00008830:80840000.fffc0001 Expansion ROM at 80840000 [disabled] [size=256K]

You have rev 02 of O'Hare. Others have reported having rev 01. I wonder how they differ?

Is that Ethernet controller in a regular slot or the COM slot? I think the latter, since regular slots would have device numbers < 0x10. Is it a COM slot card that Apple made?

You said your built-in ATI Rage Pro Turbo is non-functional. Normally, it would be at bus:device.function 00:12.0 like below (but I'm not sure that this example is the same ATI device as your Rage Pro Turbo):

Code:

00:12.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Mach64 GT/GT-B [3D Rage I/II] [1002:4754] (rev 41) (prog-if 00 [VGA controller])
	Control: I/O- Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 32 (2000ns min), Cache Line Size: 32 bytes
	Interrupt: pin A routed to IRQ 0
	Region 0: Memory at 81000000 (32-bit, non-prefetchable) [disabled]
	Region 1: I/O ports at 2000 [disabled]
	00009010:81000000.ff000000 Region 0: Memory at 81000000 (32-bit, non-prefetchable) [size=16M]
	00009014:00002001.ffffff01 Region 1: I/O ports at 2000 [size=256]

LightBulbFun · Dec 9, 2025

MacJunky said:
That's my 6500/225. It has 8MB RAM soldered onboard, and I currently have it overclocked to 300MHz. It also has a non-functional Rage Pro Turbo PCI chip soldered onto it and is utilizing a Radeon 7000 as main display graphics card.

Have you checked if the Power Macintosh 6500 BootROM has a suitable fCode image for the ATI Rage Pro? without it, it will just appear like an unflashed PC PCI card in a mac

its for similar reasons, that if you put a Wallstreet CPU card into a PDQ it will boot, but with no video, since the Wallstreet has no ROM for the PDQ's newer ATI video chip

MacJunky · Dec 10, 2025

joevt said:
The width of your output was truncated to 120 characters. What terminal app did you use to capture it? My lspci for Open Firmware requires width 550 or word wrap.
You have rev 02 of O'Hare. Others have reported having rev 01. I wonder how they differ?
Is that Ethernet controller in a regular slot or the COM slot? I think the latter, since regular slots would have device numbers < 0x10. Is it a COM slot card that Apple made?

Sorry about that, I forgot to enable wrapping. I was trying out minicom for this one and it has the option but I missed it.
If you'd like a fresh proper dump just say the word.
Yep, Apple branded COMM slot card.

LightBulbFun said:
Have you checked if the Power Macintosh 6500 BootROM has a suitable fCode image for the ATI Rage Pro? without it, it will just appear like an unflashed PC PCI card in a mac

I don't think I'm capable of figuring that one out myself, I'm waiting for someone smarter to put their chip on in the other thread about upgrading ATi chip & VRAM. https://68kmla.org/bb/index.php?thr...-6500-and-possible-ati-rage-pro-upgrade.50635

joevt · Dec 10, 2025

MacJunky said:
If you'd like a fresh proper dump just say the word.

I would accept a fresh proper dump to see if anything interesting exists beyond byte 41.
Standard PCI config registers are at least 64 bytes. All 256 is useful when a device uses config space for other registers or defines PCI capabilities.

LightBulbFun said:
Have you checked if the Power Macintosh 6500 BootROM has a suitable fCode image for the ATI Rage Pro? without it, it will just appear like an unflashed PC PCI card in a mac

The Gazelle ROM (Open Firmware 2.0.3) has fcode for ATI device ID 0x4754

The chip in @MacJunky 's pm6500 is not detected at all (vendor/device ID for the PCI bus number:device number is FFFF:FFFF) which is a different problem. If the chip is detected but doesn't have device ID 0x4754, then we can make a nvramrc patch to make the 0x4754 fcode image load for that chip. That would be useful only if the new chip is compatible with that fcode. If it isn't, then a different fcode image would need to be loaded from disk or a new ROM SIMM would need to be created and installed to override the built in ROM.

MacJunky · Dec 10, 2025

This is with line wrap enabled.
There are some other differences in that I put back R133, and have drives connected for testing to see if adding a custom alias for the Radeon 7000 helps with the crashing while running RAVE accelerated games that the 6500 is known for.(and we have some other thread somewhere about)
But I don't know what I am doing or what the real problem is, so don't mind me, I'm just screwing around.

Code:

Open Firmware, 2.0.3
To continue booting the MacOS type:
BYE<return>
To continue booting from the default boot device type:
BOOT<return>
 ok
0 > unselect-dev  ok
0 > dl  ok
A >   ok
A > dev pci1  ok
A > lspci
00:0B.0         [106B:0001] [060000] 6B100100160080220300000608200000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000040080000000000000C0000030000000017000000000000001F0000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000
00:0E.0         [1002:5159] [030000] 02105951840090020000000308200000080000880104000000008180000000000000000000000000000
0000002100809000082805000000000000000FF010800000000000000000000000000021008090100020600000000025020000002002F00020000000
000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000
                                     00007010:88000008.F8000008
                                     00007014:00000401.FFFFFF01
                                     00007018:80810000.FFFF0000
                                     00007030:80820000.FFFE0001
00:10.0         [106B:0007] [FF0000] 6B10070016000082020000FF08200000000000F30000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000
                                     00008010:F3000000.FFF80000
00:11.0         [1011:0014] [020000] 11101400040080021100000200200000010400000000808000000000000000000000000000000000000
0000000000000000084800000000000000000FE01000000FF00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000
                                     00008810:00000401.FFFFFF81
                                     00008814:80800000.FFFFFF80
                                     00008830:80840000.FFFC0001
 ok
A > dev / ls
FF828518: /PowerPC,603@0
FF828D90: /chosen@0
FF828F68: /memory@0
FF8290B0: /openprom@0
FF829170: /AAPL,ROM@FFC00000
FF829388: /options@0
FF829888: /aliases@0
FF829B20: /packages@0
FF829BA8:   /deblocker@0,0
FF82A2D0:   /disk-label@0,0
FF82A848:   /obp-tftp@0,0
FF82CAB8:   /mac-files@0,0
FF82D1D8:   /mac-parts@0,0
FF82D938:   /aix-boot@0,0
FF82DD88:   /fat-files@0,0
FF82F3A0:   /iso-9660-files@0,0
FF82FD08:   /xcoff-loader@0,0
FF8305C0:   /terminal-emulator@0,0
FF830658: /bandit@F2000000
FF831C48:   /ohare@10
FF8324D8:     /mesh@10000
FF834000:       /sd@0,0
FF834BE8:       /st@0,0
FF835860:     /escc@13000
FF8359B8:       /ch-a@13020
FF835FF8:       /ch-b@13000
FF836638:     /awacs@14000
FF836720:     /swim3@15000
FF837880:     /nvram@60000
FF837950:     /ata@20000
FF838F48:       /ata-disk@0,0
FF83A090:     /via-cuda@16000
FF83ACC0:       /adb@0,0
FF83ADB0:         /keyboard@0,0
FF83B5F0:         /mouse@1,0
FF83B8B0:       /pram@0,0
FF83B960:       /rtc@0,0
FF83BE00:       /power-mgt@0,0
FF83C510:   /pci106b,1@B
FF83C6E8:   /ATY,BlueStar@E
FF852CF8:   /pci1011,14@11
 ok
A > devalias
pci1                /bandit@F2000000
fd                  /bandit/ohare/swim3
kbd                 /bandit/ohare/via-cuda/adb/keyboard
mouse               /bandit/ohare/via-cuda/adb/mouse
screen              /bandit/ATY,BlueStar@E
ttya                /bandit/ohare/escc/ch-a
ttyb                /bandit/ohare/escc/ch-b
scsi                /bandit/ohare/mesh
scsi-int            /bandit/ohare/mesh
ata                 /bandit/ohare/ata
ata-int             /bandit/ohare/ata
 ok

Photo Request : 5500, 6500 and TAM Logic Board

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