26 Nov
2007
26 Nov
'07
8:17 p.m.
Hi,
> Also, full schematic diagrams for the machine were
included
>in the "Programmer's Reference Guide".
For one version of it, yeah. There were at least four
different
versions of the boards out there....
Good point.
But I still feel that the schematic which was published would be a useful
learning aid despite this. It would only make a difference if you were going
to hack around inside the machine itseelf, which may or may not be an issue.
....Another was RAM, the later boards used two 64Kx4
parts instead
of eight 64Kx1, and the very latest ones I saw combined two of the
ROMs (Kernel and BASIC?) into one single chip.
I'd assumed that all 64Cs had the combined Kernel/BASIC ROM, was this not
the case?
Likewise, I was under the impression that the move to a pair of 64K*4 DRAMs
also came about with the advent of the C-64C....
TTFN - Pete.