50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
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#ifndef _VECOPS_H
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#define _VECOPS_H
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typedef unsigned char byte;
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typedef signed char sbyte;
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typedef unsigned short word;
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extern word dvgwrofs; // write offset for DVG buffer
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// DVG operation functions
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typedef enum {
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BLACK, BLUE, GREEN, CYAN, RED, MAGENTA, YELLOW, WHITE
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} Color;
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void dvgclear(void);
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void dvgreset(void);
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void dvgstart(void);
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void dvgwrite(word w);
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void VCTR(int dx, int dy, byte bright);
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void SVEC(signed char dx, signed char dy, byte bright);
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void JSRL(word offset);
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void JMPL(word offset);
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void RTSL(void);
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void CNTR(void);
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void HALT(void);
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void STAT(byte rgb, byte intens);
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void STAT_sparkle(byte intens);
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void SCAL(word scale);
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// jump to pointer in DVG ROM
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void JSRPTR(const word* dvgrom);
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// macro versions for DVG ROM constants
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#define _VCTR(dx,dy,bright) \
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(dy & 0x1fff), \
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(((bright & 7) << 13) | (dx & 0x1fff))
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#define _SVEC(dx,dy,bright) (0x4000 | (dx & 0x1f) | ((bright&7)<<5) | ((dy & 0x1f)<<8))
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#define _JSRL(offset) (0xa000 | offset)
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#define _JMPL(offset) (0xe000 | offset)
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#define _RTSL() (0xc000)
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#define _CNTR() (0x8000)
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#define _HALT() (0x2000)
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#define _STAT(rgb,intens) (0x6000 | ((intens & 0xf)<<4) | (rgb & 7))
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#define _SCAL(scale) (0x7000 | scale)
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#endif /* _VECOPS_H */
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