Die restlichen Leitungen kannst du ansprechen wenn du die Basisadresse
des Comports um eins erhöhst (ausgegangen von der Basisadresse $378)
DataRegister, 0, Out printerdata
StatusRegister, 1, IN printerstatus
ControlRegister, 2, Control printerfunctions.
(Dataregister (offset = 0)) $378
----------------------------------
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
----------------------------------
..|...|...|...|...|...|...|...|_____ D0 Out.
..|...|...|...|...|...|...|________D1 Out.
..|...|...|...|...|...|__________ D2 Out.
..|...|...|...|...|____________ D3 Out.
..|...|...|...|_______________ D4 Out.
..|...|...|__________________D5 Out.
..|...|____________________ D6 Out.
..|_______________________D7 Out.
(Statusregister (offset = 1)) $379
----------------------------------
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | (all read)
----------------------------------
..|...|...|...|...|____________ Error.
..|...|...|...|_______________ Select.
..|...|...|__________________PE.
..|...|____________________ ACK.
..|_______________________Busy (inverted)
(Controlregister (offset = 2)) $ 380
----------------------------------
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | (OUT AND IN.)
----------------------------------
..........|...|...|...|...|...|
..........|...|...|...|...|...|
..........|...|...|...|...|...|____ Strobe (inverted.)
..........|...|...|...|...|_______ Auto Feed.
..........|...|...|...|_________ Init (inverted.)
..........|...|...|____________ SLCT IN (inverted.)
tech60....|...|_______________ IRQ Enable
tech60....|__________________ Direction, PS2 or later AT Devices, 0 = write, 1 = read
*)
ich hoffe das hilft dir weiter, ansonsten einfach noch einmal fragen
