11-19-2013, 08:00 PM
Beta 0.43 has a re-write of the GCR data separator code. After spending some time with a logic analyzer at the various density levels I was able to make an exact duplicate of how the state machine works in the 325572-01 ASIC (without letting the expired timer fill the bit position). This info will come in handy when writing that portion of the 1541 emulation for the SCP. Weakbits are handled correctly and g64 images are generated exactly (as long as the flux data is valid from the drive). I may change this code so that adjacent weakbytes are changed to zeros instead of the actual data. WinVICE and other emulations generally want 0x00 for a weakbyte. The current code returns data exactly as the 1541-II and the 1571 do.
A few misc. cleanups made.
A few misc. cleanups made.