I may be wrong here, but that is NOT the schematic for the Mark-8.
If you read the description of the design written by Titus (from the
same site)
he clearly states that he was unsatisfied with the clock generator in
the Intel design,
and that it was based on four monostable multivibrators.
The schematic your refering to shows the quad-monostable clock generator
which
Titus had redesigned for the Mark-8.
So I'm thinking that the schematic in question is in fact Intel's
'original' version. The
caption below the partial schematic seems to support this as well.
Am I wrong here?
Loboyko Steve wrote:
>Actually, at least the hand-drawn schematic for the
>CPU is.
>
>http://www.his.com/~jlewczyk/adavie/mark8/circuit1024.gif
>
>Someone on eBay was selling boards, etc to the
>original prints, and he had reproduced the original
>radio electronics package on ROM. R-E had apparently
>given him permission to do so. That person also had
>some parts.
>
>I'm somewhat familiar with the Mark-8 design, and the
>Scelbal machine was "better", in that it didn't use
>circuits that are now hard to get (never mind the
>mechanical aspects). Everything to build an electronic
>clone of a Scelbi is still available inexpensively
>except for, of course, the 8008 and the 1101 RAMs. The
>Mark-8 had a third party 2102 ram board, and these are
>pretty easy to get.
>
>
>--- Bob Shannon <bshannon_at_tiac.net> wrote:
>
>>I've just checked the Mark-8 links, and the only
>>schematic-like thing
>>I've found is part of the original
>>Intel schematic that inspired the Mark-8.
>>
>>Having found a few 8008's, I would like to see the
>>actual Mark-8 (or
>>mark-8 clone) schematics. They don't seem to be
>>on-line.
>>
>>
>>
>>
>
>
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>
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