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43 lines
905 B
Plaintext
43 lines
905 B
Plaintext
#if not(CBM_VIC)
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#warn vic20_hardware module should be only used on VIC-20-compatible targets
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#endif
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volatile byte vic_raster @$9004
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byte vic_freq1 @$900a
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byte vic_freq2 @$900b
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byte vic_freq3 @$900c
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byte vic_volume @$900e
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byte vic_colors @$900f
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macro void set_volume(byte volume) {
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vic_volume &= $f0
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vic_volume |= volume & $f
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}
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macro void set_bg_color(byte color) {
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vic_colors &= $f
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vic_colors |= color << 4
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}
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macro void set_border(byte color) {
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vic_colors &= $f8
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vic_colors |= color & 7
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}
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const byte black = 0
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const byte white = 1
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const byte red = 2
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const byte cyan = 3
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const byte purple = 4
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const byte green = 5
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const byte blue = 6
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const byte yellow = 7
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const byte orange = 8
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const byte light_orange = 9
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const byte light_red = 10
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const byte light_cyan = 11
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const byte light_purple = 12
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const byte light_green = 13
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const byte light_blue = 14
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const byte light_yellow = 15
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