SWTPC SuperClock II board
doug at doughq.com
Sat Mar 21 08:00:07 CDT 2020
That's a beautiful board.
While I have no docs, a careful look confirms for me that it would
superimpose something (likely clock data) on a video signal. The
horizontal and vertical counters, mux and Rom give that away.
I love the layout. Absoloutly done in the days of tape ar 2 or 4 times.
On Sat, 21 Mar. 2020, 8:26 am William Sudbrink via cctalk, <
cctalk at classiccmp.org> wrote:
> I would bet that that board increases the resolution of one of the early
> SWTPc terminals. I'm not sure which one.
> Bill S.
> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Kyle
> Owen via cctalk
> Sent: Friday, March 20, 2020 3:52 PM
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: SWTPC SuperClock II board
> In the midst of cleaning up, I came across this board. Can't seem to find
> any info online about it. There's another board from another company, not
> SWTPC, with the same name—apparently a timekeeping board for an Apple II.
> I assume this is a way to generate a composite video signal with the
> current time displayed? Anyone have schematics or a parts list?
> Thanks, and stay healthy!
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