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https://github.com/KarolS/millfork.git
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167 lines
3.5 KiB
Plaintext
167 lines
3.5 KiB
Plaintext
// Hardware addresses for C64
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#if not(CBM_64) && not(CBM_64_COMPAT)
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#warn c64_vic module should be only used on C64-compatible targets
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#endif
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// VIC-II
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byte vic_spr0_x @$D000
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byte vic_spr0_y @$D001
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byte vic_spr1_x @$D002
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byte vic_spr1_y @$D003
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byte vic_spr2_x @$D004
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byte vic_spr2_y @$D005
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byte vic_spr3_x @$D006
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byte vic_spr3_y @$D007
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byte vic_spr4_x @$D008
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byte vic_spr4_y @$D009
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byte vic_spr5_x @$D00A
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byte vic_spr5_y @$D00B
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byte vic_spr6_x @$D00C
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byte vic_spr6_y @$D00D
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byte vic_spr7_x @$D00E
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byte vic_spr7_y @$D00F
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byte vic_spr_hi_x @$D010
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byte vic_cr1 @$D011
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volatile byte vic_raster @$D012
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byte vic_lp_x @$D013
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byte vic_lp_y @$D014
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byte vic_spr_ena @$D015
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byte vic_cr2 @$D016
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byte vic_spr_exp_y @$D017
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byte vic_mem @$D018
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volatile byte vic_irq @$D019
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volatile byte vic_irq_ena @$D01A
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byte vic_spr_dp @$D01B
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byte vic_spr_mcolor @$D01C
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byte vic_spr_exp_x @$D01D
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byte vic_spr_ss_col @$D01E
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byte vic_spr_sd_col @$D01F
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byte vic_border @$D020
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byte vic_bg_color0 @$D021
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byte vic_bg_color1 @$D022
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byte vic_bg_color2 @$D023
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byte vic_bg_color3 @$D024
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byte vic_spr_color1 @$D025
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byte vic_spr_color2 @$D026
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byte vic_spr0_color @$D027
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byte vic_spr1_color @$D028
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byte vic_spr2_color @$D029
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byte vic_spr3_color @$D02A
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byte vic_spr4_color @$D02B
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byte vic_spr5_color @$D02C
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byte vic_spr6_color @$D02D
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byte vic_spr7_color @$D02E
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array vic_spr_coord [16] @$D000
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array vic_spr_color [8] @$D027
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macro void vic_enable_multicolor() {
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vic_cr2 |= 0x10
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}
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macro void vic_disable_multicolor() {
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vic_cr2 &= 0xEF
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}
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macro void vic_enable_bitmap() {
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vic_cr1 |= 0x20
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}
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macro void vic_disable_bitmap() {
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vic_cr1 &= 0xDF
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}
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macro void vic_24_rows() {
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vic_cr1 &= 0xF7
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}
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macro void vic_25_rows() {
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vic_cr1 |= 8
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}
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macro void vic_38_columns() {
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vic_cr2 &= 0xF7
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}
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macro void vic_40_columns() {
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vic_cr2 |= 8
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}
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macro void vic_disable_irq() {
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vic_irq_ena = 0
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vic_irq += 1
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}
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// base: divisible by $400, $0000-$3C00 allowed
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//macro void vic_screen(word const base) {
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// vic_mem = (vic_mem & $0F) | (base >> 6)
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//}
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macro void vic_charset_0000() {
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vic_mem = (vic_mem & $F1)
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}
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macro void vic_charset_0800() {
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vic_mem = (vic_mem & $F1) | 2
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}
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macro void vic_charset_1000() {
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vic_mem = (vic_mem & $F1) | 4
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}
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macro void vic_charset_1800() {
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vic_mem = (vic_mem & $F1) | 6
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}
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macro void vic_charset_2000() {
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vic_mem = (vic_mem & $F1) | 8
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}
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macro void vic_charset_2800() {
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vic_mem = (vic_mem & $F1) | $A
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}
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macro void vic_charset_3000() {
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vic_mem = (vic_mem & $F1) | $C
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}
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macro void vic_charset_3800() {
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vic_mem = (vic_mem & $F1) | $E
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}
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macro void vic_bitmap_0000() {
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vic_mem &= $F7
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}
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macro void vic_bitmap_2000() {
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vic_mem |= 8
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}
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macro void set_bg_color(byte color) {
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vic_bg_color0 = color
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}
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macro void set_border(byte color) {
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vic_border = color
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}
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// x, y < 8
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// default: x=0, y=3
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void vic_set_scroll(byte x, byte y) {
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vic_cr1 = (vic_cr1 & $F8) | y
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vic_cr2 = (vic_cr2 & $F8) | x
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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 brown = 9
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const byte light_red = 10
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const byte dark_grey = 11
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const byte dark_gray = 11
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const byte medium_grey = 12
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const byte medium_gray = 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_grey = 15
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const byte light_gray = 15 |