Diamond Systems PR-Z32-EA-ST, PR-Z32-E-ST Base + Write DAC MSB + Channel No, DACH1 DACH0, DA9 DA8

Base + 7	Write	DAC MSB + Channel No.
Bit No.	7	6	5	4	3	2	1	0
Name	DACH1	DACH0	X	X	DA11	DA10	DA9	DA8
DACH1–0	D/A channel. The value written to Base + 6 and Base + 7 are written to the selected
	channel, and that channel is updated immediately. The update takes approximately
	20 microseconds due to the DAC serial interface.
DA11–8	D/A bits 11 - 8; DA11 is the MSB. D/A data is an unsigned 12-bit value.

Base + 7	Read	Analog Operation Status
Bit No.	7	6	5	4	3	2	1	0
Name	DMAINT	TINT	DINT	AINT	ADCH3	ADCH2	ADCH1	ADCH0
DMAINT	DMA interrupt status. 1 = interrupt pending, 0 = interrupt not pending.
TINT	Timer interrupt status, same values as above.
DINT	Digital I/O interrupt status, same values as above.
AINT	Analog input interrupt status, same values as above.
ADCH3-0	Current A/D channel. This is the channel that will be sampled on the next
	conversion.

When any of bits 7–4 are 1, the corresponding circuit is requesting service. The interrupt routine must poll these bits to determine which circuit needs service and then act accordingly.

Prometheus CPU User Manual V1.44 Page 40