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Between Heaven & Hell 2
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rccl183
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1987-03-02
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946b
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51 lines
/*
* mkabs - make abs loader file "a.lda" from "a.out"
*
* Jul 19 1982 modified Hayward : mkabs <inputfile >outputfile
* can know run on a VAX
*/
#include <stdio.h>
unsigned short header[8];
struct {
unsigned short start,
count,
addr;
char data[512];
char check;
} al = { 1 };
struct {
unsigned short start,
count,
addr;
char check;
} go = { 1, 6, 02000, 0 } ;
main()
{
register char *cp;
register short i,n,bc;
read(0,header,sizeof(header));
if(header[0] != 0407 || !header[7]) {
fprintf(stderr,"mkabs : bad input\n");
exit(1);
}
al.addr = 0;
while((bc = read(0,al.data,sizeof(al.data))) > 0) {
al.count = bc + 6;
n = al.count;
cp =(char*) &al; i = 0;
while(n--)
i += *cp++;
*cp = -i;
write(1,&al,al.count+1);
al.addr += bc;
}
write(1,&go,sizeof(go));
exit(0);
}