HP Vectra User Manual

Printer Control Register (X7A to X7E)
This register controls the printer signals.
~
Bit Data Definition
a 1
Generates an active high STROBE signal for a
minimum of 5aanS. The STROBE signal clocks the
data from the parallel port into the printer. The valid
data must be present a
minimum of a.5uS before
and after
the STROBE signal.
a
STROBE inactive.
1
Generates the AUTO FD signal.
a AUTO
FD inactive.
2 a
Generates
the -INIT signal for a minimum of 5auS.
1
-INIT inactive.
3 1 Generates the - SLCT IN signal.
a
SLCT IN inactive.
~
4 Enables the IRQ when the - ACK input signal
changes
from true to false.
a Disable
IRQ.
5-7 a Always.
. 138 Serial/Parallel Card

HP Vectra Specifications

General

Processor	Intel Pentium
RAM	Up to 128 MB
Storage	HDD (capacity varies by model)
Operating System	Windows 95
Graphics	Integrated
Ports	Serial, Parallel
Expansion Slots	ISA, PCI