I gave OpenAI's o3 model the photos of the Destek card and the option ROM, as well as the disassembled z80 firmware and 8086 option rom firmware, and the following prompt:
See what you can figure out about the attached z80 assembly code. It's from an extremely early Destek network card (8-bit ISA, and this is also from the pre-ethernet days, likely X.25 or similar) for the original IBM PC 5150. The file I'm sharing with you is a .asm file generated by disassembling the binary data on the ROM chip on the card. The card was found in an entirely diskless IBM PC 5150 that didn't even have a floppy controller card, so presumably it booted over the network or functioned as a dumb terminal. The machine had a corresponding option rom installed on the PC motherboard that handled booting and initializing the network card. But since we don't have a network to plug it into, we can't get much further in our experiment.
> I've also included photos of the front and back of the card, and the disassembled x86 assemb