Measurement Computing Personal488 rev.3.0 For DOS & Windows 3.Xi - Manual (Page 97)

8H. Turbo C II. SOFTWARE GUIDES - 8. Driver488/DRV
II-82 Personal488 User’s Manual, Rev. 3.0
}
ieeewt(“hello\n”);
ieeerd(response);
printf(“%s\n”,response);
ieeewt(“status\n”);
ieeerd(response);
printf(“%s\n”,response);
ieeewt(“output 16;F0R0X\n”);
ieeewt(“enter 16\n”);
ieeescnf(“%*4s%e”,&voltage);
printf(“The read value is %g\n”,voltage);
sum=0.0;
for (i=0; i; i++) {
ieeewt(“enter 16\n”);
ieeescnf(“%*4s%e”,&voltage);
sum=sum+voltage;
}
printf(“The average of 10 readings is %g\n”,sum/10.0);
ieeeprtf(“ENTER 16 #1700 BUFFER %d:%d\n”,
segment(hundred),offset(hundred));
for (i=0; i<1700; i++) putchar(hundred[i]);
ieeeprtf(“ENTER 16 #1700 BUFFER continue\n”,
segment(hundred),offset(hundred));
ieeewt(“status\n”);
ieeerd(response);
printf(“%s\n”,response);
ieeewt(“wait\n”);
ieeewt(“status\n”);
ieeerd(response);
printf(“%s\n”,response);
ieee_cki = cklpint;
ieee_isr = isr;
ieeewt(“arm srq\n”);
ieeewt(“output 16;M2X”);
}
void isr()
{ int _false()_;
int sp;
int st195;
printf(“Interrupt detected...”);
ieee_cki = _false_;
ieeewt(“spoll\n”);
ieeescnf(“%d”,&sp);
if (sp==0) {
printf(“Non-SRQ Interrupt!\n”);
exit(1);
}
ieeewt(“spoll 16\n”);
ieeescnf(“%d”,&st195);
if ((st195 & 0x40) == 0 ) {
printf(“Non-195 SRQ!\n”);
exit();
}
if ((st195 & 0x20) == 0) {
if (st195 & 0x01)
printf(“Overflow\n”);
if (st195 & 0x02)
printf(“Buffer Full\n”);
if (st195 & 0x04)
printf(“Buffer 1/2 Full\n”);
if (st195 & 0x08)
printf(“Reading Done\n”);
if (st195 & 0x10)
printf(“Busy\n”);
} else {
if (st195 & 0x01)
printf(“Illegal Command Option\n”);