On Tue, Jul 18, 2017 at 09:37:21AM +0200, Mia Magnusson wrote: >But for all other kinds of cartridges there are multiple possible >configurations. The most obvious is to have switchable ram at all >possible places (including the two I/O blocks) in the memory map. ... >I'm thinking about a design whith four software writable registers for >freely selecting rom images for 6000, 7000, A000, B000 and some >hardware to reuse one of the registers for 2000 (for games) and perhaps >also reuse one of the registers for 4000 (for a relocated monitor). This sounds much like the UltiMem by Jim Brain. I wrote the VICE emulation for it and ported the menu firmware of my Vic Flash Plugin to it: http://www.iki.fi/~msmakela/8bit/ultimem/ I also wrote an image composer program. Unlike the Vic Flash Plugin, the ROM images are directly stored in the Flash ROM and only bank-switched. In the Vic Flash Plugin, memory was saved by decompressing the images from flash to RAM with PuCrunch. With 8 megabytes of flash (instead of the 4 megabytes in the Vic Flash Plugin), this is no longer necessary, because there only is about 5 megabytes of Vic-20 software out there. Marko Message was sent through the cbm-hackers mailing listReceived on 2017-07-18 09:00:07
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