Hi mark.

14-Apr-03 23:54:30, mark lewis wrote to Jasen Betts


 BA>>> Nope, the original IBM PC (and the contemporary Heath H-100)
 BA>>> used the 8086. The XT was the 8088 and the first AT's were 286's
 BA>>> (there were also 386 AT's). The 386 and the IBM PS/ came out
 BA>>> about the same time, IIRC around 1985 or 6.

 JB>> there was also a 286 based XT in there somewhere

 ml> that was an AT... Advanced Technology... the PC was an 8088
 ml> without a hard drive... the XT was an 8088 with a hard drive...
 ml> anything "greater" was an AT..

Brown'e interrupt list lists something called a "PC XT-286" which
apparently
had most of the AT hardware (CMOS clock etc) except but (I assume) only an
8-bit ISA bus.

 -=> Bye <=-

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