Created
August 20, 2019 14:28
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Z80-FPGA // Led parpadeante , código para el reto lanzado por @Obijuan_cube
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;-- RETO @Obijuan_cube | |
;-- | |
;-- Led parpadeante Z80 #FPGAWars | |
;-- | |
;-- https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!msg/fpga-wars-explorando-el-lado-libre/U5c7-6gQAqQ/MoaPrAwcAgAJ | |
;-- | |
; El programa arranca en la dirección 0 de la ROM | |
org 0x0000 | |
; Sacamos un 1 por el puerto 0x40 para encender el led0 de la Alhambra-II | |
ENCENDIDO: ld A, 0x01 | |
out (0x40),A | |
; Timer de aproximadamente 500ms para los 12MHz de la Alhambra | |
J50: ld E,0xFF | |
J51: ld B,0xFF | |
J52: djnz J52 | |
dec E | |
jr nz,J51 | |
; Apagamos el led mandando un 0 por el puerto 0x40 | |
APAGADO: ld A,0x00 | |
out (0x40),A | |
; Timer de aproximadamente 500ms para los 12MHz de la Alhambra | |
J53: ld E,0xFF | |
J54: ld B,0xFF | |
J55: djnz J55 | |
dec E | |
jr nz,J54 | |
; Volvemos al inicio (bucle infinito de encendido y apagado) | |
JP ENCENDIDO |
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