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91
Video Cards, Monitors & Displays / Radeon 9250 working on MacOS 7.6.1
« Last post by meow_mx on May 12, 2024, 06:20:24 PM »
I was jealous of the MacOS 9 users having access to the Radeon 9250, and love an excuse to do something silly and educational. So, I hacked up Radeon 9250 drivers that work on 7.6.1!

https://www.macintoshrepository.org/73857-radeon-7000-9250-driver-for-macos-7-6-9-2-2

My 9250 test card is fussy about DVI at higher resolutions (even more than my Mac Mini) which is a pity because System 7 at 3440x1440 looks really cool.
92
Video Cards, Monitors & Displays / Re: OS9 and display size
« Last post by meow_mx on May 12, 2024, 06:08:15 PM »
3440x1440 via DVI on a G4 Mini  8)

(at 30Hz refresh rate--you can't win 'em all)
93
Video Cards, Monitors & Displays / Re: Mac Mini R9200 Fcode
« Last post by ssp3 on May 12, 2024, 12:13:40 PM »
A bit more detailed instructions would be helpful. All I can see at the moment is a ton of .c files. Do I have to compile them first? And where/which is the script you're talking about?
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Storage / Re: Adaptec PowerDomain 2940UW files are no longer available :(
« Last post by ssp3 on May 12, 2024, 06:39:52 AM »
Quote from: joevt on May 12, 2024, 05:58:55 AM
Is 9500/9600 not an AV Mac even though it's very similar to the other Macs listed?

No. 9500/9600 lack the AV board with audio and video inputs and outputs.

They also have 6 PCI slots and, IIRC, two PCI bridges, each for 3 slots. Adaptec 2940 is a busmaster card, so that also could be a reason why there was different firmware for different machines. Since 2940UW worked in G4 machines too, I think AV firmware was a special case. I don't remember much, but I think that video in AV Macs went thru PCI bridge and SCSI cards had to "play nicely" with everything else on the PCI bus.
I also vaguely remember that at some point Digidesign required Adaptec cards to be throttled down for compatibility reasons with ProTools (or was it Avid?) systems.
95
Storage / Re: Adaptec PowerDomain 2940UW files are no longer available :(
« Last post by joevt on May 12, 2024, 05:58:55 AM »
Quote from: ssp3 on May 12, 2024, 05:18:08 AM
Quote from: joevt on May 12, 2024, 12:05:25 AM
What's the difference between the AV and the non-AV version?

How about double clicking "PowerDomain 2940UW v4.1 Readme"?  ;D ;D ;D
Too much work...

AV refers to the Mac (7300, 7500, 7600, 8500, and 8600). You can't use the non-AV installer on an AV Mac but can you use the AV installer on a non-AV Mac? What's the downside? Is 9500/9600 not an AV Mac even though it's very similar to the other Macs listed?
96
Storage / Re: Adaptec PowerDomain 2940UW files are no longer available :(
« Last post by ssp3 on May 12, 2024, 05:18:08 AM »
Quote from: joevt on May 12, 2024, 12:05:25 AM
What's the difference between the AV and the non-AV version?

How about double clicking "PowerDomain 2940UW v4.1 Readme"?  ;D ;D ;D
97
Storage / Re: Adaptec PowerDomain 2940UW files are no longer available :(
« Last post by joevt on May 12, 2024, 12:05:25 AM »
The ROM resources use lzo1x compression.

What's the difference between the AV and the non-AV version?

The AV version has a 64KB (512Kb) Open Firmware PCI Option ROM (only one image).

The non-AV version has two 64KB Open Firmware PCI Option ROMs concatenated together. The second image is identical to the one in the AV version. Why would it need two separate Open Firmware images? What's the first image for? Does the card exist as multiple devices? Does it have a firmware switch? Both parts have the same device ID.

The first image is small and doesn't contain an ndrv.

The lzss compressor is unable to compress the second image to a smaller size but there's no point since the image is already < 64KB.
98
Storage / Re: Adaptec PowerDomain 2940UW files are no longer available :(
« Last post by joevt on May 11, 2024, 07:04:48 PM »
Quote from: ssp3 on May 11, 2024, 08:58:04 AM
The 'Rom' resource in the v4.1 flasher is 64783 bytes.
There's 'Crc' resource that probably should be modified as well as 'cfrg' resource. Maybe something else too.
Even if you manage to hack the flasher and squeeze in compressed ROM, then there's PowerDomain control panel, that, I think, changes card settings in the ROM and not in some preferences file. It is uncertain whether the CP will play along with compressed ROM.

v4.1 flasher is attached to the 2nd post.
The Rom resources appear to be compressed. There's a mention of lzo compression in the PEF of the datafork so I'll try that.
99
Hardware / Re: AcBel PSU / Quicksilver
« Last post by aBc on May 11, 2024, 06:46:24 PM »
PM sent. ;) 



*Example images. Clickable for larger views.

100
Video Cards, Monitors & Displays / Re: Mac Mini R9200 Fcode
« Last post by joevt on May 11, 2024, 06:27:11 PM »
Quote from: ssp3 on May 11, 2024, 09:08:53 AM
Hang on.. is that a 'flashrom' build for Mac? Can it be used to dump Mac Mini onboard ROMs? If so, it could be very useful to compare "original" and "silent upgrade" ROMs to figure out what they've screwed improved in graphics department with later one.
Yes and Yes.

https://github.com/joevt/flashrom/blob/bb1afb074b2dc64aeb3bf5667ab05e731db4aaf1/doc/classic_cli_manpage.rst#L309

Try the anymem programmer first. One of the scripts in the zip file uses that method to get the Mac rom.

There's an internal programmer but it hangs my B&W G3 - it might work on later Macs but I haven't tried it. If it works without crashing then compare the result with the anymem result. You probably need to hold the power button at boot until you hear a chime to get into programmer mode.

The anypci programmer can get the option rom from any PCI card that has an option rom. Some PCI cards hide their option rom after boot (may return bad data). If it has an Open Firmware option ROM image, then DumpPCIRom.sh will convert it to Forth and verify the checksum.
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