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Import backup from 2003-08-18

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This commit is contained in:
Josh Holtrop 2003-08-18 22:00:00 -04:00
parent 162e52b121
commit b0c1c492b2
3 changed files with 11 additions and 9 deletions
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flop.img Normal file
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6
k_defines.h
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@ -28,8 +28,14 @@
#define YELLOW_TXT 0x0E #define YELLOW_TXT 0x0E
#define BRWHITE_TXT 0x0F #define BRWHITE_TXT 0x0F
typedef unsigned char byte;
typedef unsigned short word;
typedef unsigned int dword;
#define UCHAR unsigned char #define UCHAR unsigned char
#define USHORT unsigned short #define USHORT unsigned short
#define UINT unsigned int #define UINT unsigned int

14
kernel.c
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@ -45,7 +45,7 @@ typedef struct{
UCHAR RsvdFieldPosition; UCHAR RsvdFieldPosition;
UCHAR DirectColorModeInfo; UCHAR DirectColorModeInfo;
void *PhysBasePtr; dword PhysBasePtr;
UINT OffScreenMemOffset; UINT OffScreenMemOffset;
USHORT OffScreenMemSize; USHORT OffScreenMemSize;
UCHAR Reserved[206]; UCHAR Reserved[206];
@ -66,16 +66,12 @@ void k_init()
UINT *vid = (UINT *) (mib->PhysBasePtr); UINT *vid = (UINT *) (mib->PhysBasePtr);
UINT a; UINT a;
UINT tot = ((mib->XResolution) * (mib->YResolution)); UINT tot = ((mib->XResolution) * (mib->YResolution));
word step = 0x1000000 / tot; //step to increase color by for each pixel
dword color = 0;
for (a = 0; a < tot; a++) for (a = 0; a < tot; a++)
{ {
if (a < (tot / 4)) vid[a] = color;
vid[a] = 0x00FF0000; color += step;
else if (a < (tot / 2))
vid[a] = 0x0000FF00;
else if (a < ((tot * 3) / 4))
vid[a] = 0x000000FF;
else
vid[a] = 0x00FFFFFF;
} }
} }