Printer/Communications Presence Test - IBM PC CONVERTIBLE Technical Reference

Printer /Communications Presence
Test
From
Part 3
Set pointer to
t
PRINTER_BASE - - Printer presence test
table (hex 408).
Set pointer to
PRT_TAB table.
Delay
160
ms.
Check portable
printer status
register (hex
079).
To
Part 2
No
No
Printer Table (PRT_TAB)
Entry
(hex)
078
378
3BC
278
Port
Portable Printer
Primary Printer
Mono Adapter
Secondary
To
Part
3
To
Part
3
__ SPortable printer
lpresence test
Figure 1-3 (Part 1 of 7). Printer/Communications Presence Test
1-12 Power-OnSelf-Test(POST)