26 Feb
2013
26 Feb
'13
8:37 p.m.
On Tue, Feb 26, 2013 at 09:08:44PM -0500, allison wrote:
One that most users would want is a emulation of some
mass storage
device like DECtape or RX02, or
maybe RK05 (or 5F). This is the most often needed item, [...]
I've been working on that, but it seems silly to finish with all these
other PDP-8 I/O projects popping up and getting Actual Results. Might
still finish it for my own use though (too much $$$ blown not to).
My scheme (largely just on paper but I've done prototype PCBs for
several subassemblies and a whole design for a related PDP-11 project)
is for a posi/negi interface with an XMOS CPU to hack the bus protocol
and handle IOTs, FTDI VNC2 for I/O (to SD cards and/or USB flash
drives), plus a tiny daughterboard for F-RAM to emulate the RS08
(TSS/8!!!).
John Wilson
D Bit