Phipli
Well-known member
I'd be looking at the chip numbers starting "341" but I can't quite read some of them and am feeling too lazy to look them all up again
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Anyone got a spare Beige G3 ROM?
- Thread starter Phipli
- Start date
Phipli
Well-known member
I wouldn't rely on anything on the PCBs themselves - they're just different versions of the same thing functionally, so you could put different ROMs on different PCBs.
croissantking
Well-known member
Here’s my Rev A ROM.
I threw it away after I got the Rev C ROM, thinking that I’d never need it. Then I learned that it won’t play nice with an SATA card - so I regret that obviously.
What are we trying to ascertain here? Lol
I threw it away after I got the Rev C ROM, thinking that I’d never need it. Then I learned that it won’t play nice with an SATA card - so I regret that obviously.
What are we trying to ascertain here? Lol
croissantking
Well-known member
So I just picked up a Rev. A ROM for my Beige G3 (later motherboard with Rage Pro PCI chip), but it won't boot. I get a chime, but then the screen stays black.
I'm thinking the Rage Pro doesn't like the Video BIOS on the older ROM.
Unless the ROM module is faulty.
Anyone tried this combination?
I'm thinking the Rage Pro doesn't like the Video BIOS on the older ROM.
Unless the ROM module is faulty.
Anyone tried this combination?
Are you able to get into Open Firmware with a serial port?
For the
ATY,mach64_3DUPro, The older ROM has version 1.49 while the newer ROMs have 1.53.All three version have version 1.49 for the
ATY,mach64_3DU.
croissantking
Well-known member
How would I do this?
Hold-Command-Option-O-F during startup. I think by default Open Firmware uses keyboard and screen on Beige G3? If the screen doesn't work then maybe you can type:
Code:
" ttya" ioYou can read more about Open Firmware at https://developer.apple.com/library/archive/navigation/#section=Platforms&topic=macOS
Search for "Open Firmware".
If you can type commands in Open Firmware, then we can maybe examine things.
croissantking
Well-known member
I tried the developer link and Googling for how to do this, but came up short.
Would I use a telnet application on the client computer?
https://developer.apple.com/library/archive/navigation/ didn't work? Click on macOS and search for Open Firmware.
Open Firmware two machine access for the Beige G3 is limited to serial port. This includes Open Firmware 1.0.5 (PM 7500) to Open Firmware 3.1.1 (B&W G3 1.1f4 BootROM built on 04/09/99 at 13:57:32).
Telnet isn't usable until later versions of Open Firmware (For example the iMac Apple PowerMac2,1 4.1.9f1 BootROM built on 09/14/01).
Beige G3 can do OF on the screen and keyboard. I have it running to that extent in MAME. Once the boot chime starts playing press and hold Command-Option-O-F and let go when the OF prompt appears.
Some machines are shy about going into OF depending what keyboard you have - the Mac mini G4 we got a real chip dump from wouldn't go in with an Apple USB keyboard but did with a PC USB keyboard for some reason.
Some machines are shy about going into OF depending what keyboard you have - the Mac mini G4 we got a real chip dump from wouldn't go in with an Apple USB keyboard but did with a PC USB keyboard for some reason.
croissantking
Well-known member
How do I set up the second machine so that it displays the beige G3’s output?
croissantking
Well-known member
Ah, found it.
“The Open Firmware user interface, hereafter called the interface, as implemented on Macintoshes to date, comes up in two-machine mode. You can connect the two machines together using the serial ports and cable. Start with the modem ports for simplicity. Open Firmware defaults to the modem port. Use a communication application such as Zterm, MacTerminal, or Microphone as the host.”
Technical Note TN1061: Fundamentals of Open Firmware, Part I: The User Interface
TN1061: Describes the Open Firmware User Interface, Forth and the Open Firmware language used in Apple products.
developer.apple.com
Phipli
Well-known member
@croissantking what specifically are you planning to do in openfirmware?
Just scrolling back and I see your question was
Just scrolling back and I see your question was
I can't draw the connection with what is now being done?
Phipli
Well-known member
@croissantking have you tried installing a non-ATi PCI video card like an ixMicro TwinTurbo or something? See if video comes up like that?
croissantking
Well-known member
Interesting idea but only have a Rage 128 and Radeon 7000 to test with.
Phipli
Well-known member
Have you tried the Radeon 7000?
Do you really not have any other PCI cards? A VillageTronic? Radius?
