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Works great, thanks

Any extension that interacts directly with hardware will usually have issues in A/UX. So in that case, do not use A/UX.

If the documentation isn't enough, reverse engineering the MacTCP or Open Transport INITs with Ghidra is also an option.

Here is an alternative method if you don't want to use filesystem sharing methods... You can use a tar file as a disk image. On the Linux or Mac side, create an empty disk image truncate -s 512M image.dmg In the A/UX side, for SCSI ID 1, something like tar -cf -...

Auto speed negotiation doesn't work with the MC3NB card. You need to set the speed manually on the other side of the connection to 10mbps.

For more effective bandwidth, it seems like compression is needed to be used over the NuBus interface between the processor and the display controller. It seems like the technique above is already used in production, like the display controllers contained in the Apple M1 chip:

Probably in order to get "faster" graphics, need to do some pre-processing on the graphics data like queueing, culling, avoiding commands for non-visible stuff, compression, etc. before transferring that data over to the graphics card. If the benchmark is doing some equivalent of glReadPixels...

Is OpenGL(ES) a suitable vector for acceleration? I know that older accelerated cards required an extension to enable acceleration, and broke between different System versions due to the fact that it hooked/patched QuickDraw calls. Once such example is the Macintosh Display Card 8•24 GC For...

Might be a good idea to implement DPI scaling too if you want to go that high resolutions. Or otherwise you could just use low resolutions and set the scaling method on the monitor itself to nearest neighbor. Or scaling could be implemented on the card itself and you could apply shader effects...

As long as partial updates work I think it's fine. More screen real estate just means you can put more windows on the screen, and the most likely use case is that those windows aren't constantly updating (... well unless you are trying to play multiple videos at the same time). If you would...

This is normal, it will take a while, especially if you don't have a cache card and/or graphics card installed. I did have a NIC installed. If you want to disable it move it out of Startup Items (folder located in the System Folder). If you are impatient, you can do it from the text shell...

I know LaCie Silverlining works for me on an IIci. First apply the original image and the scsi2sd xml configuration, then install LaCie Silverlining onto the boot disk. You should no longer get the sad mac and be able to boot correctly

Alternatively instead of exposing a block device, it should also be possible to write an interface to the File System Manager, and then the code dealing with filesystems like exFAT, NTFS, ext4, FAT32, etc could be run on the card. This way the Mac side does not need to worry about filesystems.

If HDMI pin 18 is correctly implemented it can supply +5V power to the HDMI to VGA converter without external power supply. For the opposite, I don't really think there is enough voltage supplied by many cards. It's probably enough for reading the EEPROM information on the display with DDC and...

Instead of VGA probably add an additional HDMI port instead for multi display output. Leave the DAC to be external

If you are going to put Raspberry Pi on PDS, might as well port PiStorm to it. But for graphic card probably better to start off with a simple NuBus card using documented examples like the Toby and BUG Pickles cards first.

The Toby card might be the easiest to get up and running. You may want to also see about cloning the Macintosh Display Card 8•24 card. If you write new drivers, you would need to write them for each OS like MacOS, Linux, A/UX, NetBSD etc. I think it would be nice to "genericize" the protocol...

Looks like PiStorm is working on a Macintosh SE:

It seems like there is another method of GPU acceleration, with the DrawSprockets API, but it requires taking over the display output (e.g. "exclusive fullscreen"). I'm not sure which machines or cards supported acceleration with this API. There is also QuickDraw 3D but support for it was...

Is there a functionality similar to binfmt_misc in A/UX? Mainly I'm asking this because I want to write an ELF loader since COFF support has been removed in newer versions of binutils.