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- PIO EQU 30H
- ORG 1000H
- MSJ DB "CONCEPTOS DE "
- DB "ARQUITECTURA DE "
- DB "COMPUTADORAS"
- FIN DB ?
- ORG 2000H
- MOV AL, 0FDH ; INICIALIZACION PIO PARA IMPRESORA
- OUT PIO+2, AL
- MOV AL, 0
- OUT PIO+3, AL
- IN AL, PIO
- AND AL, 0FDH
- OUT PIO, AL ; FIN INICIALIZACION
- MOV BX, OFFSET MSJ
- MOV CL, OFFSET FIN-OFFSET MSJ
- POLL: IN AL, PIO
- AND AL, 1
- JNZ POLL
- MOV AL, [BX]
- OUT PIO+1, AL
- IN AL, PIO ; PULSO 'STROBE'
- OR AL, 02H
- OUT PIO, AL
- IN AL, PIO
- AND AL, 0FDH
- OUT PIO, AL ; FIN PULSO
- INC BX
- DEC CL
- JNZ POLL
- INT 0
- END
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