Ports seem to be:
fbfa = -----011-----010 a2=1 a1=1 a0=1 (write) fbfb = -----011-----011 a2=1 a1=1 a0=1 (read) f9f9 = -----001-----001 a2=1 a1=1 a0=0 (write) f9fa = -----001-----010 a2=0 a1=1 a0=0 (write) fafa = -----010-----010 FBFA - write command to WD1010 (write) 1111101111111010 FBFB - read status register from WD1010 (read) 1111101111111011 F9F8 - WD1010 data register (read/write) 1111100111111000
FAF8 = cylinder low? 1111101011111000
FAFA = ?
F9F9 = ?wd1010 sdh register (write) F9FA = ?wd1010 sector count register (write)
F9FB = ?
WD1010 appears to be mapped to CPC's A0.
WD1010 appears to be mapped to CPC's A0.
== Links ==