35 lines
603 B
C
35 lines
603 B
C
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#include <i86.h>
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#include <conio.h>
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extern void __cdecl enableUnchainedVGAMode();
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extern void __cdecl enableTextMode();
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char far *VGA = (char*)0xA0000;
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int main(void) {
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// activate unchained vga mode
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// set up 8 very clear colors
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// place some data into video memory to be latch copied
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// show off the following
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// * latch copies
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// * masking
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// * barrel shifting
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int i,j;
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enableUnchainedVGAMode();
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outp(0x3c4, 0x02);
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for (i = 0; i < 200; ++i) {
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for (j = 0; j < 4; ++j) {
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outp(0x3c5, 1 << j);
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VGA[i] = j + 1;
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}
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}
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delay(5000);
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enableTextMode();
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}
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