HP Vectra User Manual

The following table defines the interrupt priorities.
Table
11.3
Interrupt Priority
Interrupt Priority Interrupt Source
Clear Interrupt
Receiver line 1 Overrun error or
Reading the line
status
parity error
or status register.
framing error
or
break (200mS
space on receive
data line).
Received
2
Data available in Reading the
data
receive buffer. receive buffer
available
register.
Transmitter
3 Data transmitted
Reading the
buffer
from transmit
interrupt
register buffer. identification
empty register (if
source),
or
writing to the
transmit buffer
register.
Modem
4 CS, CC, CE or CF
Reading the
status signal received.
modem status
register.
128 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