Strasbaugh nTellect 7AF - Chapter 4: Programming Without the Pamux Driver; Overview; Bus Pin Definitions - Not Using AC28

Pamux User’s Guide 103
PROGRAMMING
WITHOUT THE
PAMUX DRIVER
OVERVIEW
This chapter covers everything you will need to know to program a Pamux system without using the
Pamux software driver. It begins by providing information on Pamux bus pin definitions and bus
timing. It then addresses all programming issues for both digital and analog Pamux stations,
providing specific examples written in MS-DOS QBasic.
If you are using the Pamux driver, you may skip this chapter or review it as a background reference to
acquire a deeper understanding of Pamux communication.
BUS PIN DEFINITIONS - NOT USING AC28
To implement the host Pamux bus interface without using an AC28, you will need a UCA4 adapter
card and a 17-line parallel port. The port is configured with eight data lines, six address lines, a read
strobe line, a write strobe line, and a reset line. AC36 is a preconfigured adapter to connect Pamux to
an Intel Multibus
®
format parallel port. Figure 4-1 details the Pamux bus pin-out:
Table 4-1: Pamux Bus Pin Definitions
Pin Signal Function Pin Signal Function
1 Address line 0 33 Data line 7
3 Address line 1 35 Data line 6
5 Address line 2 37 Data line 5
7 Address line 3 39 Data line 4
9 Address line 4 41 Data line 3
11 Address line 5 43 Data line 2
13 Write strobe line 45 Data line 1
15 Read strobe line 47 Data line 0
49 Reset line
NOTE: All even-numbered pins on the connector are
connected to logic ground.