28 Aug
2007
28 Aug
'07
5:11 p.m.
--- Chuck Guzis <cclist at sydex.com> wrote:
On 28 Aug 2007 at 14:56, Chris M wrote:
generally speaking, if a cpu board has 2 roms,
designated high and low, would they also alternate
addresses in the same way. And frankly, why would it
matter, if you were just looking to save the contents?
You could always stitch the code together afterwards.
Didn't the IBM PS/2 models 25 and 30 do this with
their ram - one bank had all the even numbered
addresses, the other the odd?
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as most of us know, the IBM PC and PC/AT (I
think)
have extra rom sockets. If you want to obtain a
dump
of an eprom, could you simply plug them into
these
spare sockets and use Debug or whatever to capture
an
image? Seems straitforward enough, but I figured
it
wouldn't hurt to ask...
Sure, but with the proviso that the AT sockets are
paired as high-
order and low-order bytes in a 16 bit word. So
alternate bytes
represent the content of each ROM.