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;page 255
.z80
; iobyte:
; 0 = console on AVR-System
; 1 = console on SIO/ASCI
extrn iobyte
extrn ff.init,ff.i.st,ff.in
extrn ff.o.st,ff.out
if CPU_Z180
extrn as0init,as0ista,as0inp,as0osta,as0out
extrn as1init,as1ista,as1inp,as1osta,as1out
else
extrn ser.init,ser.ist,ser.in,ser.ost,ser.out
endif
public charini
public ?const,?conin
public ?conos,?cono
include config.inc
if CPU_Z180
include z180reg.inc
endif
cseg
if CPU_Z180
charini:
call ff.init
call as0init
jp as1init
?const:
ld a,(iobyte)
and 03h
jp z,ff.i.st
dec a
jp z,as0ista
dec a
jp z,as1ista
jr nullstatus
?conin:
ld a,(iobyte)
and 03h
jp z,ff.in
dec a
jp z,as0inp
dec a
jp z,as1inp
jr nullinput
?conos:
ld a,(iobyte)
and 03h
jp z,ff.o.st
dec a
jp z,as0osta
dec a
jp z,as1osta
jr rettrue
?cono:
ld a,(iobyte)
and 03h
jp z,ff.out
dec a
jp z,as0out
dec a
jp z,as1out
jr nulloutput
else
charini:
call ff.init
ld c,0
call ser.init
ld c,1
jp ser.init
?const:
ld a,(iobyte)
and 03h
jp z,ff.i.st
dec a
ld b,a
jp ser.ist
?conin:
ld a,(iobyte)
and 03h
jp z,ff.in
dec a
ld b,a
jp ser.in
?conos:
ld a,(iobyte)
and 03h
jp z,ff.o.st
dec a
ld b,a
jp ser.ost
?cono:
ld a,(iobyte)
and 03h
jp z,ff.out
dec a
ld b,a
jp ser.out
endif
nullinput:
ld a,1Ah
ret
nulloutput:
ld a,c
ret
rettrue:
or 0FFh
ret
nullstatus:
xor a
ret
end
|
