kopia lustrzana https://github.com/Jean-MarcHarvengt/MCUME
61 wiersze
1.4 KiB
C
61 wiersze
1.4 KiB
C
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#ifndef __VECX_H
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#define __VECX_H
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enum {
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VECTREX_MHZ = 1500000, /* speed of the vectrex being emulated */
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VECTREX_COLORS = 128, /* number of possible colors ... grayscale */
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ALG_MAX_X = 33000,
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ALG_MAX_Y = 41000
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};
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enum {
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VECTREX_PDECAY = 30, /* phosphor decay rate */
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/* number of 6809 cycles before a frame redraw */
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FCYCLES_INIT = VECTREX_MHZ / VECTREX_PDECAY,
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/* max number of possible vectors that maybe on the screen at one time.
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* one only needs VECTREX_MHZ / VECTREX_PDECAY but we need to also store
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* deleted vectors in a single table
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*/
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VECTOR_CNT = VECTREX_MHZ / VECTREX_PDECAY,
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VECTOR_HASH = 65521
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};
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typedef struct vector_type {
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unsigned char x0, y0; /* start coordinate */
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unsigned char x1, y1; /* end coordinate */
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//long x0, y0; /* start coordinate */
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//long x1, y1; /* end coordinate */
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/* color [0, VECTREX_COLORS - 1], if color = VECTREX_COLORS, then this is
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* an invalid entry and must be ignored.
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*/
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unsigned char color;
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} vector_t;
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extern const unsigned char rom[8192];
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extern unsigned char cart[32768];
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extern unsigned snd_regs[16];
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extern unsigned alg_jch0;
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extern unsigned alg_jch1;
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extern unsigned alg_jch2;
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extern unsigned alg_jch3;
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extern long vector_draw_cnt;
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extern long vector_erse_cnt;
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extern vector_t *vectors_draw;
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extern vector_t *vectors_erse;
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void vecx_reset (void);
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void vecx_emu (long cycles);
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#endif
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