c65gs
c65gs copied to clipboard
gardners
FPGA-based C64 Accelerator / C65 like computer
Trying SDHC mode on SD cards adds ~2 seconds to the kickstart time, instead of SD card access being possible within ~0.2 seconds. This is very annoying. SD mode is...
Memory mapper makes this a bit interesting to do. Current thoughts: - 1K 4-way associative cache with random replacement. - Need random(ish) bit sequence generator. - The cache would hold...
Currently CPU is about 1/2 the speed of a similarly clocked 6502, largely due to a single wait state on reading from chipram. This is incurred for each read, even...
glyph_pixeldata is shifted in the last cycle of a char, which takes precedence over the writing in of the new pixel data.
The stereo microphone is likely very easy to add support for. We can just map the left and right samples to a couple of registers. The ADMP421 outputs in Pulse...