From: Howard Herman (hh_at_speakeasy.net)
Date: 2002-12-19 14:44:15
As I recall a GeoRam will only work for/in GEOS, unlike a real 1750. Nick wrote: > > I received a GeoRAM expansion the other day which I had bought on eBay to > that I could checkout its memory refresh scheme. It uses 44256 chips, and so > needs a refresh scheme as the VIC accesses won't be enough... > > A couple questions: > * before I reverse engineer the refresh logic, has someone else done it? > * memory expansion, apparantly designs were made for this as well as the > 1750, etc, but I've never come across them. Has anyone got the upgrade > schematic? -- ___ ___ ___ ___ / //_/ // / //_/ // Howard Herman / ___ // / ___ // email@example.com /_// /_// /_// /_// © Message was sent through the cbm-hackers mailing list
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