HP 8712ES - Page 51

Automating Measurements 3-23
Operator Interaction
Analyzer Port Numbers
Table 3-3 Readable Ports
Port
Number
Register Description
9 0 Reads the serial port.
15 0 Reads the 8-bit data port Cent_D0 thru D7.
15 1 Reads the user bit.
15 2 Reads the limit test pass/fail bit.
15 10 Reads the 8-bit status port.
D0 — Cent_acknowledge
D1 — Cent_busy
D2 — Cent_out_of_paper
D3 — Cent_on_line
D4 — Cent_printer_err