2013-12-05 11:40:44 +00:00
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;*
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;** VTech Creativision Definitions
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;*
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;** Screen
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SCREEN_ROWS = 24
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SCREEN_COLS = 32
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2021-05-30 17:30:08 +00:00
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SCREEN_PTR := $3A
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CURSOR_X := $3C
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CURSOR_Y := $3D
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2013-12-05 11:40:44 +00:00
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;** VDP
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2021-05-30 17:30:08 +00:00
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VDP_DATA_R := $2000
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VDP_STATUS_R := $2001
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VDP_DATA_W := $3000
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VDP_CONTROL_W := $3001
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2013-12-05 11:40:44 +00:00
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;** PIA
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2021-05-30 17:30:08 +00:00
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PIA0_DATA := $1000
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PIA0_STATUS := $1001
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PIA1_DATA := $1002
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PIA1_STATUS := $1003
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2013-12-05 11:40:44 +00:00
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;** General
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CH_VLINE = 33
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CH_HLINE = 34
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CH_ULCORNER = 35
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CH_URCORNER = 36
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CH_LLCORNER = 37
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CH_LRCORNER = 38
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2017-02-08 13:34:35 +00:00
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;** I/O (Zero-page variables)
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2021-05-30 17:30:08 +00:00
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ZP_KEYBOARD := $10
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ZP_JOY0_DIR := $11
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ZP_JOY1_DIR := $13
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ZP_JOY0_BUTTONS := $16
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ZP_JOY1_BUTTONS := $17
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2013-12-05 11:40:44 +00:00
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2017-03-08 12:16:40 +00:00
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;** Joystick direction values (ZP_JOY0_DIR/ZP_JOY1_DIR)
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JOY_N = $49
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JOY_NNE = $48
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JOY_NE = $47
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JOY_ENE = $46
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JOY_E = $45
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JOY_ESE = $44
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JOY_SE = $43
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JOY_SSE = $42
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JOY_S = $41
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JOY_SSW = $40
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JOY_SW = $4F
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JOY_WSW = $4E
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JOY_W = $4D
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JOY_WNW = $4C
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JOY_NW = $4B
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JOY_NNW = $4A
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2021-05-30 17:30:08 +00:00
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;** BIOS routines
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BIOS_NMI_RESET_ADDR := $F808
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BIOS_PLAY_TUNE1 := $FBD6
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BIOS_PLAY_SONG := $FBED
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BIOS_PLAY_TUNE2 := $FCE6
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BIOS_WRITE_VDP_REG := $FE1F
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BIOS_QUIET_PSG := $FE54
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BIOS_POKE_PSG := $FE77
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BIOS_IRQ1_ADDR := $FF3F
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BIOS_IRQ2_ADDR := $FF52
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