118 lines
2.2 KiB
C
118 lines
2.2 KiB
C
#ifndef C64_VIC_H
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#define C64_VIC_H
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#include "types.h"
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#define VIC_CTRL1_RSEL 0x08
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#define VIC_CTRL1_DEN 0x10
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#define VIC_CTRL1_BMM 0x20
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#define VIC_CTRL1_ECM 0x40
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#define VIC_CTRL1_RST8 0x80
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#define VIC_CTRL2_CSEL 0x08
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#define VIC_CTRL2_MCM 0x10
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#define VIC_CTRL2_RES 0x20
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#define VIC_INTR_RST 0x01
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#define VIC_INTR_MBC 0x02
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#define VIC_INTR_MMC 0x04
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#define VIC_INTR_ILP 0x08
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#define VIC_INTR_IRQ 0x80
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enum VICColors
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{
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VCOL_BLACK,
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VCOL_WHITE,
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VCOL_RED,
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VCOL_CYAN,
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VCOL_PURPLE,
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VCOL_GREEN,
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VCOL_BLUE,
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VCOL_YELLOW,
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VCOL_ORANGE,
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VCOL_BROWN,
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VCOL_LT_RED,
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VCOL_DARK_GREY,
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VCOL_MED_GREY,
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VCOL_LT_GREEN,
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VCOL_LT_BLUE,
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VCOL_LT_GREY
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};
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struct VIC
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{
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struct XY
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{
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volatile byte x, y;
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} spr_pos[8];
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byte spr_msbx;
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volatile byte ctrl1;
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volatile byte raster;
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volatile byte lpx, lpy;
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volatile byte spr_enable;
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volatile byte ctrl2;
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volatile byte spr_expand_y;
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volatile byte memptr;
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volatile byte intr_ctrl;
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volatile byte intr_enable;
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volatile byte spr_priority;
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volatile byte spr_multi;
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volatile byte spr_expand_x;
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volatile byte spr_sprcol;
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volatile byte spr_backcol;
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volatile byte color_border;
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volatile byte color_back;
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volatile byte color_back1;
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volatile byte color_back2;
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volatile byte color_back3;
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volatile byte spr_mcolor0;
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volatile byte spr_mcolor1;
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volatile byte spr_color[8];
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};
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// set the 16k Bank for the vic
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// 0 : 0x0000..0x3fff
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// 1 : 0x4000..0x7fff
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// 2 : 0x8000..0xbfff
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// 3 : 0xc000..0xffff
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void vic_setbank(char bank);
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enum VicMode
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{
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VICM_TEXT,
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VICM_TEXT_MC,
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VICM_TEXT_ECM,
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VICM_HIRES,
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VICM_HIRES_MC
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};
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// set the display mode and base address. This will also
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// adapt the bank.
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void vic_setmode(VicMode mode, char * text, char * font);
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// put a sprite at the given x/y location, taking care of the
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// x MSB
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inline void vic_sprxy(byte s, int x, int y);
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// wait for the beam to reach the bottom of the visual area
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inline void vic_waitBottom(void);
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// wait for the beam to reach the top of the frame
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inline void vic_waitTop(void);
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// wait for the top of the frame and then for the bottom of the visual area
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inline void vic_waitFrame(void);
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// wait for a specific raster line
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void vic_waitLine(int line);
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// reference to the VIC chip
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#define vic (*((struct VIC *)0xd000))
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#pragma compile("vic.c")
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#endif
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