2014-06-02 00:47:46 +00:00
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;ACME 0.95
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2012-11-26 23:11:45 +00:00
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!ifdef lib_cbm_c64_sid_a !eof
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lib_cbm_c64_sid_a = 1
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2014-06-02 00:47:46 +00:00
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!address {
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; write-only registers:
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; voice 1:
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sid_v1_freq_lo = $d400
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sid_v1_freq_hi = $d401
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sid_v1_width_lo = $d402
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sid_v1_width_hi = $d403
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sid_v1_control = $d404 ; see below for bits
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sid_v1_attack_decay = $d405 ; hi-nibble: attack length, low-nibble: decay length
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sid_v1_sustain_release = $d406 ; hi-nibble: sustain volumne, low-nibble: release length
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; voice 2:
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sid_v2_freq_lo = $d407
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sid_v2_freq_hi = $d408
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sid_v2_width_lo = $d409
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sid_v2_width_hi = $d40a
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sid_v2_control = $d40b ; see below for bits
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sid_v2_attack_decay = $d40c ; hi-nibble: attack length, low-nibble: decay length
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sid_v2_sustain_release = $d40d ; hi-nibble: sustain volumne, low-nibble: release length
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; voice 3:
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sid_v3_freq_lo = $d40e
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sid_v3_freq_hi = $d40f
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sid_v3_width_lo = $d410
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sid_v3_width_hi = $d411
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sid_v3_control = $d412 ; see below for bits
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sid_v3_attack_decay = $d413 ; hi-nibble: attack length, low-nibble: decay length
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sid_v3_sustain_release = $d414 ; hi-nibble: sustain volumne, low-nibble: release length
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}
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2012-11-26 23:11:45 +00:00
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; voice control bits:
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2014-06-02 00:47:46 +00:00
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sid_VOICECONTROL_NOISE = %#.......
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sid_VOICECONTROL_RECTANGLE = %.#......
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sid_VOICECONTROL_SAWTOOTH = %..#.....
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sid_VOICECONTROL_TRIANGLE = %...#....
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sid_VOICECONTROL_DISABLE_RESET = %....#... ; 1 = disable voice, reset noise generator
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sid_VOICECONTROL_RINGMODULATION = %.....#..
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sid_VOICECONTROL_SYNC = %......#.
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sid_VOICECONTROL_ON = %.......# ; 0 = release, 1 = attack/sustain/decay
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!address {
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; registers shared by all voices:
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sid_filter_cutoff_lo = $d415 ; only bits 0/1/2!
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sid_filter_cutoff_hi = $d416
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sid_filter_control = $d417 ; hi-nibble: resonance, lo-nibble: filter ext/v3/v2/v1
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sid_filter_volume = $d418 ; hi-nibble: filter mode (disable v3, high, band, low), lo-nibble: volume
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; read-only registers:
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sid_potx = $d419
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sid_poty = $d41a
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sid_v3_waveform_output = $d41b
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sid_v3_adsr_output = $d41c
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}
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; Do not use the shadow copies of these registers at $d5xx, $d6xx or $d7xx:
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2012-11-26 23:11:45 +00:00
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; on a C128 they do not exist!
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