Making a C64/C65 compatible computer
Sunday, 5 November 2023
Fixing Yet Another HyperRAM Bug
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Grargle! I thought I had fixed all the bugs with the HyperRAM / expansion RAM interface, but it looks like at least one still remains. The 5...
Saturday, 28 October 2023
Reading Amiga disks in the MEGA65
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Geehaf asked some questions about how to read Amiga disks in the MEGA65, so I started looking into what's involved. Note that this is ...
Monday, 23 October 2023
Hardware-Accelerated IEC Serial Interface - Part 1
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One of the main unfinished aspects of the C65 ROM is the IEC serial interface. From memory, it is basically copied from the C128, and massa...
Saturday, 21 October 2023
Debugging SDRAM and HyperRAM cache and other related things
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The R4 board has both the 8MB HyperRAM that is on the R3/R3A board, as well as a new 64MB SDRAM. For the R4 board, I have made the bitstrea...
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