[PDP8-Lovers] how to clean a PDP8/A, dishwasher?

From: Peter C. Wallace <pcw_at_mesanet.com>
Date: Sun Dec 16 13:51:15 2001

On Sun, 16 Dec 2001, ajp166 wrote:

>
> -----Original Message-----
> From: Ben Franchuk <bfranchuk_at_jetnet.ab.ca>
> >
> >After reading the core memory stuff I realized the what I was thinking
> >about was dynamic memory (16k chips) for a 2 mhz 8080 in byte. The
> >reason
> >I got confused was it used the split memory cycle read-write as core
> >memory.
>
>
> Core is one of the few destructive readout memories used. So every
> read has a following write to restore the data, often between data
> read there will be a modify cycle which means new data written back.
>
> Allison
>
>
>


DRAM (well at least 1 T DRAM) is destructive readout also, the
regeneration logic is built into the chip though.

Peter Wallace
Received on Sun Dec 16 2001 - 13:51:15 GMT