3 Feb
2016
3 Feb
'16
1:18 a.m.
................
IBM's PS/2 was designed to remain software compatible with their PC/AT/XT
line of computers upon which the large PC clone market was built, but the
hardware was quite different. PS/2 had two BIOSes; one was named ABIOS
(Advanced BIOS) which provided a new protected mode interface and was
used by OS/2, and the other was named CBIOS (Compatible BIOS) which was
included in order for the PS/2 to be software compatible with the
PC/AT/XT.
CBIOS was so compatible that it even included Cassette
BASIC.
................
Well it would, otherwise IBM DOS Basic wouldn't work....
... it checks for the Basic ROMS and won't run on a clone...
Dave
G4UGM