Commodore Amiga A2000 - Page 339

Address BFEr01 data bits 7-0 (A12*) (INT2)
PA7..game port 1, pin 6 (fire button*)
PA6..game port 0, pin 6 (fire button*)
PAS..RDY* disk ready*
PA4..TKO* disk track 00*
PA3..WPRO* write protect*
PA2..CHNG* disk change*
PAl..LED* led light (0=bright)
PAO..OVL memory overlay bit
SP...RDAT keyboard data
CNT..RCLR
PB7..P7 data 7
PB6..P6 data 6
PB5..P5 data 5 Centronics parallel interface
PB4..P4 data 4 data
PB3..P3 data 3
PB2..P2 data 2
PBl..P1 data 1
PBO..P0 data 0
PC...drdy* centronics control
F....ack*
Address BFDrOO data bit 15-8 (A13*) (INT6)
PA7..com line DTR*, driven output
PA6..com line RTS*, driven output
PA5..com line carrier detect*
PA4..com line CTS*
PA3..com line DSR*
PA2..SEL centronics control
PA1..POUT paper out ---+
PA0..BUSY busy -----+ |
| |
SP...BUSY commodore -+ |
CNT..POUT commodore ---+
PB7..MTR* motor
PB6..SEL3* select external 3rd drive
PB5..SEL2* select external 2nd drive
PB4..SEL1* select external 1st drive
PB3..SEL0* select internal drive
PB2..SIDE* side select*
PBl..DIR direction
PBO..STEP* step* (3.0 milliseconds minimum)
PC...not used
F....INDEX* disk index*
- 330 Appendix F -