[0] - I/O port base address
[1] - IRQ
[2] - A/D reference
- 0 = differential
- 1 = pseudodifferential (common)
- 2 = single-ended
+ 0 = differential
+ 1 = pseudodifferential (common)
+ 2 = single-ended
[3] - A/D range
- 0 = [-10,10]
- 1 = [-5,5]
- 2 = [0,10]
+ 0 = [-10,10]
+ 1 = [-5,5]
+ 2 = [0,10]
[4] - A/D encoding
- 0 = two's complement
- 1 = straight binary
+ 0 = two's complement
+ 1 = straight binary
[5] - DAC 0 range
- 0 = [-10,10]
- 1 = [0,10]
+ 0 = [-10,10]
+ 1 = [0,10]
[6] - DAC 0 encoding
- 0 = two's complement
- 1 = straight binary
+ 0 = two's complement
+ 1 = straight binary
[7] - DAC 1 range (same as DAC 0)
[8] - DAC 1 encoding (same as DAC 0)
*/
data[i] = inb(dev->iobase + RTI800_ADCLO);
data[i] |= (0xf & inb(dev->iobase + RTI800_ADCHI)) << 8;
- if (devpriv->adc_coding == adc_2comp) {
+ if (devpriv->adc_coding == adc_2comp)
data[i] ^= 0x800;
- }
}
return i;
for (i = 0; i < insn->n; i++) {
devpriv->ao_readback[chan] = d = data[i];
- if (devpriv->dac0_coding == dac_2comp) {
+ if (devpriv->dac0_coding == dac_2comp)
d ^= 0x800;
- }
+
outb(d & 0xff,
dev->iobase + (chan ? RTI800_DAC1LO : RTI800_DAC0LO));
outb(d >> 8,
options[0] - I/O port
options[1] - irq
options[2] - a/d mux
- 0=differential, 1=pseudodiff, 2=single
+ 0=differential, 1=pseudodiff, 2=single
options[3] - a/d range
- 0=bipolar10, 1=bipolar5, 2=unipolar10
+ 0=bipolar10, 1=bipolar5, 2=unipolar10
options[4] - a/d coding
- 0=2's comp, 1=straight binary
+ 0=2's comp, 1=straight binary
options[5] - dac0 range
- 0=bipolar10, 1=unipolar10
+ 0=bipolar10, 1=unipolar10
options[6] - dac0 coding
- 0=2's comp, 1=straight binary
+ 0=2's comp, 1=straight binary
options[7] - dac1 range
options[8] - dac1 coding
*/