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https://opencores.org/ocsvn/zet86/zet86/trunk
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[/] [zet86/] [trunk/] [soc/] [bios/] [vgabios.h] - Rev 54
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#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
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