mirror of
https://github.com/irmen/prog8.git
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63 lines
1.9 KiB
Lua
63 lines
1.9 KiB
Lua
%import textio
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%import cx16diskio
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%import palette
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%zeropage basicsafe
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%zpreserved $22,$26 ; zsound lib uses this region
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;; Proof Of Concept ZCM player using a binary blob version of zsound library by ZeroByte relocated to something usable here.
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; "issues": see play-zsm.p8
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main $0830 {
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zsound_lib:
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; this has to be the first statement to make sure it loads at the specified module address $0830
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%asmbinary "pcmplayer-0830.bin"
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; note: jump table is offset by 2 from the load address (because of prg header)
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romsub $0832 = pcm_init() clobbers(A)
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romsub $0835 = pcm_trigger_digi(ubyte bank @A, uword song_address @XY)
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romsub $0838 = pcm_play() clobbers(A, X, Y)
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romsub $083b = pcm_stop() clobbers(A)
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romsub $083e = pcm_set_volume(ubyte volume @A)
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const ubyte digi_bank = 1
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const uword digi_address = $a000
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const ubyte zcm_DIGITAB_size = 8 ; header size
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sub start() {
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txt.print("zsound pcm digi demo program!\n")
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c64.SETMSG(%10000000) ; enable kernal status messages for load
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if not cx16diskio.load_raw(8, "terminator2.zcm", digi_bank, digi_address) {
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txt.print("?can't load\n")
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return
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}
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c64.SETMSG(0)
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cx16.rambank(digi_bank)
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; initialize header pointer of the zcm to point to actual sample data
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poke(digi_address+2, digi_bank)
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pokew(digi_address, digi_address+zcm_DIGITAB_size)
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pcm_init()
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txt.print("\nplaying digi! hit enter to stop.\n")
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pcm_trigger_digi(digi_bank, digi_address)
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while cx16.joystick_get2(0)==$ffff {
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sys.waitvsync()
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repeat 1000 {
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; artificially delay calling the play routine so we can see its raster time
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%asm {{
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nop
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}}
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}
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palette.set_color(0, $0c5)
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pcm_play()
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palette.set_color(0, $000)
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}
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pcm_stop()
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}
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}
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