5 Feb
2007
5 Feb
'07
4:36 p.m.
some pcs didnt have dma. Tandy 1000...IBM
Peanut...Sanyo MBC-5xx too IIRC...
Correct (well, it was option in the Tandy 1000, it
was included on the
RAM expansion board).
What was it, the 8237, actually came on the ram
board? I probably knew this at one time. I have about
three of these things in the shed, I'll need to check
them out to see if any has it.
I would also claim the Sanyo MBC-5xx was not a
PC-compatible. Yes it ran
MS-DOS, but it wouldn't boot an IBM PC disk AFAIK.
Yes true. Depends on how you want to interpret "IBM
compatible". To some, pc and compatible are the same
thing. In reality, an Apple II or a Commodore 64 is a
pc. So...using the previous definition, a Sanyo
MBC-5xx isn't really a "pc", nor a compatible. Not a
very good one anyhoo...
I used to call things like that semi-compatible, but
the term is misleading. Now I just say pseudo-
compatible. Some are slightly compatible, and many can
use "well behaved" IBM peecee software - only accesses
the hardware through DOS or BIOS calls, but to refer
to a Tandy 2000 as a semi-compatible is just too darn
crazy.
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