21 Apr
2007
21 Apr
'07
10:29 p.m.
ISTR that a lot (if not all) of the early 8086/88
machines, which weren't
IBM clones, could be expanded well past 640K.
IIRC the HP150 and 150-II haev a 640K limit on RAM. Odd, since the
machine is totally IBM-incompatible in other ways (the BIOS calls, not to
mention the hardware, are totally different), so there's no obvious
reason why they stuck something (video?) at the A0000 address preventing
you from having more RAM, but they did. Oh well.
There was a paged RAM board (a bit like expanded memory) fro the 150,
which for some odd reason also included an HP-HIL port. Maybe it was
needed for Windows or something (yes, there was a Windows for the HP150),
and that's where you connected the mouse.
I definitely recall having 896K in one of my Sirii and
my Apricot Xi.
My original Apricot has been pushed up to 960K or something like that.
-tony