On Thu, May 31, 2012 at 09:33:50AM +0200, MichaÅ‚ Pleban wrote: >I have been looking for a while for a solution to this problem. The RAM >locations 0000 and 0001 are inaccessible to the CPU, but can be read >using sprite collision logic in the VIC. But is there a way to actually >write to these RAM locations? On certain "de00 safe" computers, there is, IIRC. When you write to these locations, the data lines won't be driven, but the address lines and R/-W line will. As a result, the RAM locations should receive the data that was fetched by the VIC-II on the previous cycle. On the C128, you can cheat with by mapping the stack page to the zero page with the MMU, and by writing to $100 and $101. Marko Message was sent through the cbm-hackers mailing listReceived on 2012-05-31 09:00:27
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