Are you sure the AT has ROM BASIC? I don't remember that at all.
Yes I am 100% sure my AT has ROM BASIC (that's the machine I am typing
this on, BTW). It's the later (8MHz) model, so I assume the older ones
had it too, certainly the manuals I have imply that.
It's pretty hard to get to in most AT ystems because it'll boot from the
floppy or hard drives rather than run ROM BASIC. But I suspect you could
pull the disk cotnroller card and it'll go into BASIC.
Another way to see it's got the ROM BASIC is that the same disk BASIC
runs on the PC/XT?AT machines _but not on the compatibles_. The IBM disk
BASIC is much shorter than the BASIC for compatibles becasue much of the
BASIC is in ROM
-tony