Qbus split I&D?

[Guy Sotomayor]

> On Mar 17, 2015, at 2:45 PM, John Wilson <wilson at dbit.com> wrote:
> 
> On Tue, Mar 17, 2015 at 05:02:37PM -0400, Noel Chiappa wrote:
>> UNIBUS RAM cards? Neato-keeno!! When will they be available, and how do I
>> order some? :-)
> 
> I think Guy's MEM11 is going to be way cooler.  I made my board in 2012
> to scratch my own itch (but then didn't get it running in time and had to
> spend real money on an MS11LD after all), and it's a memory-only device so
> it plugs into the A/B positions of a MUD/SPC slot, which makes it useless
> on an 11/20 which doesn't have those (right?  unless you add a BA11K?),
> and can't emulate anything that does DMA or interrupts (but that still
> leaves a few things).
> 
> I'll be doing a new rev one of these months (to incorporate ECOs and
> battery holders and add more devices, now that I did the CRC emulation for
> E11 anyway) and then I'll certainly make them available, but not seriously
> expecting anyone to order one.  Guy's MEM11 is nicer!

Thanks!

I'm in the midst of writing a J1 emulator so that I can better debug all of the
forth code I've been writing.  Looks like it'll be sometime this summer by the
time I can get a prototype built.  :-(

> 
> 
> Anyway here's a picture of Rev A:
> 
> 	http://www.dbit.com/wilson/uram.jpg
> 

Cool looking little board!

TTFN - Guy