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- ;********************************************************************
- ;* *
- ;* >>>>>>> S o f t D e s i g n <<<<<<< 17.1.86 *
- ;* *
- ;* moveit 3.0 patch for atari 520 st via modem port *
- ;* patch space 0100h - 02ffh all registers may be used *
- ;* use @ patmov submit command for patching *
- ;* *
- ;********************************************************************
-
-
- .Z80
- ASEG
- ORG 0100H
-
-
-
- INSTT EQU 04H ;virtual input status register
- OUTSTT EQU 05H ;virtual output status register
- INDAT EQU 06H ;virtual input data register
- OUTDAT EQU 04H ;virtual output data register
-
-
- MOVATA: JP 0302H ;start of moveit program
- JP 4000H ;end of user section
- JP INILIN ;initialize communication line
- JP DEINIL ;de-initialize communication line
- JP RXSTAT ;comline input status
- JP RXDATA ;comline data input
- JP TXSTAT ;comline output status
- JP TXDATA ;comline output data
- JP SIGNON ;pointer to configuration message
- JP DIAL ;auto dial/answer support
-
-
-
- ;user configuration message
-
- SIGNON: DB 09H, 09H, ' Atari 520 ST under SoftDesign CPMZ80 Emulator'
- DB 0DH, 0AH, 0AH, '$'
-
-
-
- ;initialize communication line
- ;no entry or return parameters
-
- INILIN: CALL RXSTAT ;delete
- OR A ;all characters
- JR Z,INIXIT ;in
- CALL RXDATA ;serial
- JR INILIN ;input queue.
-
- INIXIT: RET
-
-
-
- ;de-initialize communication line
- ;no entry or return parameters
-
- DEINIL: RET
-
-
-
- ;communication line input status
- ;return status in <a> = ff if character ready, 00 if not
-
- RXSTAT: IN A,(INSTT)
- RET
-
-
-
- ;communication line data input
- ;return input character in <a>
-
- RXDATA: IN A,(INDAT)
- RET
-
-
-
- ;communication line output status
- ;output character in <a> on entry
-
- TXSTAT: IN A,(OUTSTT)
- RET
-
-
-
- ;communication line data output
- ;output character in <a> on entry
- ;<a> must remain unchanged !
-
- TXDATA: OUT (OUTDAT),A
- RET
-
-
-
- ;auto dial/answer support
- ;if <b>=0 on entry, dial the dialing string pointed to by <hl>
- ;if <b>=1 on entry, hang up
- ;if <b>=2 on entry, auto answer
-
- DIAL: RET
-
-
- FILLER: DS MOVATA+0200H-$
-
-
- END
- ə