F9DEh Panda [[8255 PPI chip|PPI]] Port C - Handshake (bit0=Strobe.out, Bit5=Busy.in)
F9DFh Panda [[8255 PPI chip|PPI]] Control - 8bit Printer data
FADCh Amstrad RS323 [[Z80-DART/Z80-SIO chip|Z8470 (Z80 DART)]] Channel A Data (R/W) FADDh Amstrad RS323 [[Z80-DART/Z80-SIO chip|Z8470 (Z80 DART)]] Channel A Control/Status (R/W) FADEh Amstrad RS323 [[Z80-DART/Z80-SIO chip|Z8470 (Z80 DART)]] Channel B Data (R/W) FADFh Amstrad RS323 [[Z80-DART/Z80-SIO chip|Z8470 (Z80 DART)]] Channel B Control/Status (R/W) FBDCh Amstrad RS323 [[8253 chip|8253]] Baudrate Timer 0 Channel A TX Clock (R/W) FBDDh Amstrad RS323 [[8253 chip|8253]] Baudrate Timer 1 Channel A RX Clock (R/W) FBDEh Amstrad RS323 [[8253 chip|8253]] Baudrate Timer 2 Channel B RX/TX Clock (R/W) FBDFh Amstrad RS323 [[8253 chip|8253]] Baudrate Timer 0-2 Control Registers (W)
== RSX Commands ==