PCjs Machines
Home of the original IBM PC emulator for browsers.
IBM Video Graphics Array (VGA)
IBM VGA ROM
We have only one IBM VGA ROM revision, dated October 27, 1986, from an IBM PS/2 Display Adapter. Which, BTW, has to be one of the most confusing product names ever, since the adapter was an 8-bit card designed for ISA machines, not PS/2 machines.
To (re)build the JSON-encoded IBM-VGA 1986-10-27 ROM, run the following FileImage command:
fileimage.js --file=1986-10-27/IBM-VGA.rom --output=1986-10-27/IBM-VGA.json5 --comments
The disassembled contents of the 1986-10-27 ROM from the IBM PS/2 Display Adapter is available here.