RE: Z80

what about program ram?
Williams games use dram, but I think they have their own refresh circuitry
(since they use a 6809 and I don't think it has any provisions for dram
refresh)

-jeff

-----Original Message-----
From: aek@spies.com [mailto:aek@spies.com]
Sent: Wednesday, July 28, 1999 12:26 PM
To: vectorlist@lists.cc.utexas.edu
Subject: RE: Z80

"what
games from that era rely on the CPU to do the DRAM refreshing?"

none that I know of

they all use the fact that ram is being scanned by the video
to refresh it.
Received on Wed Jul 28 13:35:44 1999