| 1 | #ifndef vgabios_h_included
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| 2 | #define vgabios_h_included
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| 3 |
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| 4 | /* Types */
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| 5 | typedef unsigned char Bit8u;
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| 6 | typedef unsigned short Bit16u;
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| 7 | typedef unsigned long Bit32u;
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| 8 | typedef unsigned short Boolean;
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| 9 |
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| 10 | /* Defines */
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| 11 |
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| 12 | #define SET_AL(val8) AX = ((AX & 0xff00) | (val8))
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| 13 | #define SET_BL(val8) BX = ((BX & 0xff00) | (val8))
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| 14 | #define SET_CL(val8) CX = ((CX & 0xff00) | (val8))
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| 15 | #define SET_DL(val8) DX = ((DX & 0xff00) | (val8))
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| 16 | #define SET_AH(val8) AX = ((AX & 0x00ff) | ((val8) << 8))
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| 17 | #define SET_BH(val8) BX = ((BX & 0x00ff) | ((val8) << 8))
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| 18 | #define SET_CH(val8) CX = ((CX & 0x00ff) | ((val8) << 8))
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| 19 | #define SET_DH(val8) DX = ((DX & 0x00ff) | ((val8) << 8))
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| 20 |
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| 21 | #define GET_AL() ( AX & 0x00ff )
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| 22 | #define GET_BL() ( BX & 0x00ff )
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| 23 | #define GET_CL() ( CX & 0x00ff )
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| 24 | #define GET_DL() ( DX & 0x00ff )
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| 25 | #define GET_AH() ( AX >> 8 )
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| 26 | #define GET_BH() ( BX >> 8 )
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| 27 | #define GET_CH() ( CX >> 8 )
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| 28 | #define GET_DH() ( DX >> 8 )
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| 29 |
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| 30 | #define SET_CF() FLAGS |= 0x0001
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| 31 | #define CLEAR_CF() FLAGS &= 0xfffe
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| 32 | #define GET_CF() (FLAGS & 0x0001)
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| 33 |
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| 34 | #define SET_ZF() FLAGS |= 0x0040
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| 35 | #define CLEAR_ZF() FLAGS &= 0xffbf
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| 36 | #define GET_ZF() (FLAGS & 0x0040)
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| 37 |
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| 38 | #define SCROLL_DOWN 0
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| 39 | #define SCROLL_UP 1
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| 40 | #define NO_ATTR 2
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| 41 | #define WITH_ATTR 3
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| 42 |
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| 43 | #define SCREEN_SIZE(x,y) (((x*y*2)|0x00ff)+1)
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| 44 | #define SCREEN_MEM_START(x,y,p) ((((x*y*2)|0x00ff)+1)*p)
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| 45 | #define SCREEN_IO_START(x,y,p) ((((x*y)|0x00ff)+1)*p)
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| 46 |
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| 47 | #endif
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