Commodore Amiga - Page 158

AUDOLC
SET
CLEAR
AUDOEN
DMAEN
SINEDATA:
EQU
EQU
EQU
EQU
EQU
DS.W
AUDOLCH
$08000
o
$01
$0200
o
;Be sure word-aligned
DC.B
0, gO, 127, gO, 0,-gO,-127,-gO
MAIN:
LEA
SINEDATA, AO
WHEREODATA:
MOVE.L AO, AUDOLC
SETAUDOLENGTH:
MOVE.W #4, AUDOLEN
SETAUDOVOLUME:
MOVE.W #64, AUDOVOL
SETAUDOPERIOD:
MOVE.W #447, AUDOPER
BEGINCHANO:
jAddress of data to
; audio location register 0
; The 68000 writes
this as though
it were
a 32-bit register at the
low-bits location
(common to all locations
and pointer registers
in the system).
;Set length in words
;
Use maximum volume
MOVE.W #(SET + DMAEN + AUDOEN), DMACONW
END
146 Audio Hardware