
Chapter 5 A/D conversion ....................................... 37
A/D Data format and status register ................................ 38
Input range selection........................................................ 39
MUX setting .................................................................... 39
Trigger mode.................................................................... 40
A/D data transfer.............................................................. 41
How to make an A/D conversion..................................... 42
Chapter 6 D/A conversion ....................................... 43
General information......................................................... 44
D/A applications .............................................................. 45
Chapter 7 Digital input and output ....................... 47
Chapter 8 Programmable timer/counter............... 49
The Intel 8254.................................................................. 50
Counter read/write and control registers.......................... 50
Counter operating modes ................................................. 53
Counter operations........................................................... 55
Counter applications ........................................................ 56
Chapter 9 Direct memory access operation.......... 57
Using DMA transfer with the PCL-818L ........................ 59
Appendix A Block Diagram ...................................... 61
Appendix B Connector, switch and VR Locations . 63
Appendix C PC I/O port address map ..................... 65
Appendix D Calibration ........................................... 67
VR assignment................................................................. 68
A/D calibration ................................................................ 69
D/A calibration ................................................................ 69