Re:Ask HN: Who's still keeping a DOS machine up because the ...
by jasomill on Saturday September 26, 2026 @08:13PM
(#49861913)
IBM released the PC XT/370[1], built around a pair of 68000s and an 8087 with custom microcode to emulate System/370 instructions, in 1983.
It's not hard to imagine a similar system fabricated around an open or licensed processor core today being well within the budget of a major airline today.
Software emulation would no doubt be less expensive, but there could have been regulatory reasons for building plug-compatible hardware.
It's not hard to imagine a similar system fabricated around an open or licensed processor core today being well within the budget of a major airline today.
Software emulation would no doubt be less expensive, but there could have been regulatory reasons for building plug-compatible hardware.
[1] https://en.wikipedia.org/wiki/PC-based_IBM_mainframe-compati...