OpenBIOS

Download

openbios@openbios.org

March 2018

4 participants
2 discussions

Apple's Open Firmware.
by James Lyons April 4, 2018

April 4, 2018

As an addition to our work trying to get the 6600 PCI-E working with PCI Passthrough, I've got a QuickSilver G4 and a couple of Geforce/ Quadro cards. I've been working on some FCode Roms for them, and I'd like to test them before I flash it to the EEProm, however I don't seem to have the commands correct. " agp/@10" open-dev to my-self load hd:12,\ppc\4600.rom 800000 1 byte-load That all returns ok, but the FCode doesn't seem to execute. Also, I had to strip the PCI Header from the ROM to get the load command to work. Have a look at this ROM and see if the FCode starts at 0x40, looks like it does to me?

6 29

Re: [OpenBIOS] Apple's Open Firmware.
by James Lyons March 20, 2018

March 20, 2018

Seems I wasn't using a crossover cable, I don't know why anyone would make a yellow cable that wasn't crossover. Anyway, now I have input via telnet, but I can't get the Mac to boot to a OF telnet session? I tried to set it via nvramrc, but that doesn't seem to work: setenv auto-boot? false nvedit " enet:telnet,10.1.2.3" io nvstore setenv use-nvramrc? true reset-all Returns me to the OF prompt but no in telnet. I seem to recall doing this on an Old World Mac many years ago, I need to change the input-device and output-device to enet?

1 0