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81f2d3f683
git-svn-id: https://svn.code.sf.net/p/acme-crossass/code-0/trunk@114 4df02467-bbd4-4a76-a152-e7ce94205b78
123 lines
5.1 KiB
Plaintext
123 lines
5.1 KiB
Plaintext
;ACME 0.96.4
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!ifdef lib_cbm_c64_vic_a !eof
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lib_cbm_c64_vic_a = 1
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; This is from Christian Bauer's VIC text: {
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; 6566: designed for static RAM, never used in C64/128
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; 6567/8562: C64, NTSC
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; 6569/8565: C64, PAL
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; 6572: Drean C64, PAL-N
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; 8564: C128, NTSC
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; 8566: C128, PAL
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; PAL chips generate 312 lines with 63 cycles per line.
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; PAL-N chips generate 312 lines with 65 cycles per line.
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; NTSC chips generate 263 lines with 65 cycles per line.
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; Very early NTSC chips (6567R56A) have an off-by-one
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; error, they generate 262 lines with 64 cycles per line.
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; }
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; The c128 version is officially called "VIC-IIe".
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; It has two additional registers and more pins.
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; color codes
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viccolor_BLACK = $0
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viccolor_WHITE = $1
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viccolor_RED = $2
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viccolor_CYAN = $3
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viccolor_PURPLE = $4
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viccolor_GREEN = $5
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viccolor_BLUE = $6
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viccolor_YELLOW = $7
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viccolor_ORANGE = $8
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viccolor_BROWN = $9
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viccolor_LRED = $a
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viccolor_GRAY1 = $b
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viccolor_GRAY2 = $c
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viccolor_LGREEN = $d
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viccolor_LBLUE = $e
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viccolor_GRAY3 = $f
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!addr vic_base = $d000
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; sprite coordinates:
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vic_xs0 = vic_base + $00
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vic_ys0 = vic_base + $01
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vic_xs1 = vic_base + $02
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vic_ys1 = vic_base + $03
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vic_xs2 = vic_base + $04
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vic_ys2 = vic_base + $05
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vic_xs3 = vic_base + $06
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vic_ys3 = vic_base + $07
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vic_xs4 = vic_base + $08
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vic_ys4 = vic_base + $09
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vic_xs5 = vic_base + $0a
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vic_ys5 = vic_base + $0b
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vic_xs6 = vic_base + $0c
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vic_ys6 = vic_base + $0d
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vic_xs7 = vic_base + $0e
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vic_ys7 = vic_base + $0f
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vic_msb_xs = vic_base + $10 ; bit 8 of x position (one bit per sprite)
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vic_controlv = vic_base + $11 ; vertical control and other stuff:
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; %7....... "bit 8" of $d012
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; %.6...... extended background color mode (1=on)
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; %..5..... 0 = text mode, 1 = bitmap mode
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; %...4.... display enable: 0 = disable (border only), 1 = enable VIC only checks this once per frame!
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; %....3... lines: 0 = 24, 1 = 25 ; if set, upper and lower border gain 4 pixels each
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; %.....210 vertical smooth scroll (default %011), screen contents are moved down by this amount
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vic_line = vic_base + $12 ; raster line (also see bit 7 of $d011) reading returns current value, writing sets interrupt value
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vic_xlp = vic_base + $13 ; light pen coordinates, x (only half the resolution)
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vic_ylp = vic_base + $14 ; light pen coordinates, y
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vic_sactive = vic_base + $15 ; sprite enable (one bit per sprite)
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vic_controlh = vic_base + $16 ; horizontal control and other stuff:
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; %76...... always set
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; %..5..... "test", should be 0
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; %...4.... 0 = hires, 1 = multicolor
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; %....3... columns: 0 = 38, 1 = 40 ; if set, left border gains 7 pixels and right border gains 9 pixels
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; %.....210 horizontal smooth scroll (default %000), screen contents are moved to the right by this amount
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vic_sdy = vic_base + $17 ; sprites, double height (one bit per sprite)
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vic_ram = vic_base + $18 ; RAM pointer
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; %7654.... which K of VIC bank is video ram (default %0001)
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; %....321. text: which 2K of VIC bank is character set (default %010)
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; %.......0 text: unused
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; %....3... bitmap: which 8K of VIC bank is bitmap
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; %.....210 bitmap: unused
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vic_irq = vic_base + $19 ; writing back acknowledges!
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; %7....... 1: VIC requested interrupt
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; %.654.... always set
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; %....3... 1: light pen active
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; %.....2.. 1: sprite-sprite collision
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; %......1. 1: sprite-data collision
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; %.......0 1: raster interrupt
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vic_irqmask = vic_base + $1a
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; %7654.... always set
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; %....3... 1: enable lightpen interrupt
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; %.....2.. 1: enable sprite-sprite collision interrupt
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; %......1. 1: enable sprite-data collision interrupt
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; %.......0 1: enable raster interrupt
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vic_sback = vic_base + $1b ; sprites, background (one bit per sprite)
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vic_smc = vic_base + $1c ; sprites, multicolor (one bit per sprite)
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vic_sdx = vic_base + $1d ; sprites, double width (one bit per sprite)
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vic_ss_collided = vic_base + $1e ; sprites, sprite collision (one bit per sprite) reading clears register!
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vic_sd_collided = vic_base + $1f ; sprites, data collision (one bit per sprite) reading clears register!
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; color registers (high nibbles are always %1111):
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vic_cborder = vic_base + $20 ; border color
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vic_cbg = vic_base + $21 ; general background color
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vic_cbg0 = vic_base + $21
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vic_cbg1 = vic_base + $22 ; background color 1 (for EBC and MC text mode)
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vic_cbg2 = vic_base + $23 ; background color 2 (for EBC and MC text mode)
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vic_cbg3 = vic_base + $24 ; background color 3 (for EBC mode)
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vic_sc01 = vic_base + $25 ; sprite color for MC-bitpattern %01
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vic_sc11 = vic_base + $26 ; sprite color for MC-bitpattern %11
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; individual sprite colors (in MC mode, these are used for bit pattern %10):
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vic_cs0 = vic_base + $27 ; sprite 0 color
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vic_cs1 = vic_base + $28 ; sprite 1 color
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vic_cs2 = vic_base + $29 ; sprite 2 color
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vic_cs3 = vic_base + $2a ; sprite 3 color
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vic_cs4 = vic_base + $2b ; sprite 4 color
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vic_cs5 = vic_base + $2c ; sprite 5 color
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vic_cs6 = vic_base + $2d ; sprite 6 color
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vic_cs7 = vic_base + $2e ; sprite 7 color
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; See <cbm/c128/vic.a> for the C128's two additional registers at $d02f/$d030.
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; They are accessible even in C64 mode and $d030 can garble the video output,
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; so be careful not to write to it accidentally in a C64 program!
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