55 lines
909 B
C
55 lines
909 B
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/io.h>
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#include "lrmi.h"
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unsigned char * edid = NULL;
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int read_edid()
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{
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int i;
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struct LRMI_regs regs;
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if (!LRMI_init()) {
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return -1;
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}
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edid = LRMI_alloc_real(128);
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if ( edid == NULL )
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{
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return -1;
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}
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memset(edid, 0xed, 128);
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memset(®s, 0, sizeof(regs));
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regs.es = (unsigned int)edid >> 4;
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regs.edi = 0;
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regs.eax = 0x4f15;
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regs.ebx = 0x01;
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ioperm(0,0x400,1);
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iopl(3);
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LRMI_int( 0x10, ®s );
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iopl(0);
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ioperm(0,0x400,0);
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if(*edid || *(edid+7)) return -2;
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for(i=1;i<=6;i++) if(*(edid+i)!=0xff) return -2;
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return regs.eax;
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}
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int main ( int argc, char *argv[])
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{
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read_edid();
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fwrite(edid,128,1,stdout);
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return 0;
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}
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