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VDCSAV.C
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C/C++ Source or Header
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1993-08-10
|
783b
|
39 lines
/*
SG C Tools 1.2
(C) 1993 Steve Goldsmith
All Rights Reserved
Compiled with HI-TECH C 3.09 (CP/M-80).
*/
#include <hitech.h>
#include <vdc.h>
uchar vdcRegsToSave[] = /* vdc registers to save and restore */
{
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
34, 35, 36
};
uchar vdcRegs[sizeof(vdcRegsToSave)-1]; /* saved vdc registers */
/* save and restore key vdc registers */
void savevdc(void)
{
uchar I;
for(I = 0; I < sizeof(vdcRegs); I++) /* save key vdc regs */
vdcRegs[I] = invdc(vdcRegsToSave[I]);
}
void restorevdc(void)
{
uchar I;
for(I = 0; I < sizeof(vdcRegs); I++) /* restore vdc regs saved with savevdc() */
outvdc(vdcRegsToSave[I],vdcRegs[I]);
}