13 Jun
2012
13 Jun
'12
7:53 p.m.
As for the original question, IIRC if the IBM bios fails to find a boot device, it calls a
particular software interrupt, which is set to the
cold start point of the BASIC ROM. Whether this ROM would work on
not-100%-compatibles depends on just what that ROM does about directly
accessign hardwre.
-tony
?C: But in general what does the IBM 5150/5160 specific BASIC rom do regarding addressing
specific h/w? That's the crux of the matter I guess. If I could run TI Pro GW-BASIC on
my XP laptop (several years ago) to whatever degree, something tells me BASIC accesses the
h/w via BIOS or DOS calls.