| #ifndef vgabios_h_included |
| #define vgabios_h_included |
| |
| /* Types */ |
| typedef unsigned char Bit8u; |
| typedef unsigned short Bit16u; |
| typedef unsigned long Bit32u; |
| typedef unsigned short Boolean; |
| |
| /* Defines */ |
| |
| #define SET_AL(val8) AX = ((AX & 0xff00) | (val8)) |
| #define SET_BL(val8) BX = ((BX & 0xff00) | (val8)) |
| #define SET_CL(val8) CX = ((CX & 0xff00) | (val8)) |
| #define SET_DL(val8) DX = ((DX & 0xff00) | (val8)) |
| #define SET_AH(val8) AX = ((AX & 0x00ff) | ((val8) << 8)) |
| #define SET_BH(val8) BX = ((BX & 0x00ff) | ((val8) << 8)) |
| #define SET_CH(val8) CX = ((CX & 0x00ff) | ((val8) << 8)) |
| #define SET_DH(val8) DX = ((DX & 0x00ff) | ((val8) << 8)) |
| |
| #define GET_AL() ( AX & 0x00ff ) |
| #define GET_BL() ( BX & 0x00ff ) |
| #define GET_CL() ( CX & 0x00ff ) |
| #define GET_DL() ( DX & 0x00ff ) |
| #define GET_AH() ( AX >> 8 ) |
| #define GET_BH() ( BX >> 8 ) |
| #define GET_CH() ( CX >> 8 ) |
| #define GET_DH() ( DX >> 8 ) |
| |
| #define SET_CF() FLAGS |= 0x0001 |
| #define CLEAR_CF() FLAGS &= 0xfffe |
| #define GET_CF() (FLAGS & 0x0001) |
| |
| #define SET_ZF() FLAGS |= 0x0040 |
| #define CLEAR_ZF() FLAGS &= 0xffbf |
| #define GET_ZF() (FLAGS & 0x0040) |
| |
| #define SCROLL_DOWN 0 |
| #define SCROLL_UP 1 |
| #define NO_ATTR 2 |
| #define WITH_ATTR 3 |
| |
| #define SCREEN_SIZE(x,y) (((x*y*2)|0x00ff)+1) |
| #define SCREEN_MEM_START(x,y,p) ((((x*y*2)|0x00ff)+1)*p) |
| #define SCREEN_IO_START(x,y,p) ((((x*y)|0x00ff)+1)*p) |
| |
| #endif |