Compiling a list of "neo-retro" hardware

From: vrs <vrs_at_msn.com>
Date: Wed Jun 16 21:55:46 2004

> > - Vince's M452X and W076X PDP-8 replacement boards
>
> I have some of those that I haven't been home to assemble yet. I'd wanted
> to make a 300-baud-multiple crystal controlled clock for my PDP-8/L since
> about 1984, but never got around to it... I'm happy Vince did the hard
work
> of layout and PCB manufacture.

Your'e welcome :-)!

> I forget who, but someone has built a one-off DF-32 implementation in TTL
with
> a Dallas battery-backed NVRAM (like a large version of the NVRAM found in
SPARC
> boxes). There seems to be an implementation bug, so it doesn't work
perfectly
> with original software, but you can write new stuff from scratch that
works
> well (there was some sense that was flipped between a DF-32 and the RF-08,
it's
> related to that, somehow).

That was done by Charles Morris, and I now own the prototype. I am working
(intermittently) on a related design for an RF08 replacement. (If someone
can help me with the indicator panel for the RF08 replacement, I'd
appreciate it.)

The implementation bug (in Rev A) was that the "skip on no error" was
implemented as "skip on error", RF08 style.

I also have stuff that may never see implementation (like my TC08 replica),
and an EAGLE library of DEC Gxxx and Mxxx modules (both as components for
projects like the TC08 replica and as individual boards you could have
produced).

    Vince
Received on Wed Jun 16 2004 - 21:55:46 BST

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