HP Vectra User Manual

SECTION 3.
BASIC INPUTI
OUTPUT
SYSTEM
The Basic Input/Output System (BIOS) is a set of programs that is
stored in the ROM on the processor extension card in the FOOOO
segment. For a more complete description of the BIOS refer to HP
Vectra Technical Reference Manual Volume 2: System BIOS.
Table 3.1
BIOS Interrupt Summary
Address
Range
INT
BIOS Entry Summary
8-B
2 NMI Parity error is
detected.
14-17
5 PRINT SCREEN Default routine that
prints the video
screen characters.
20-23
8
TIMER INT Called each clock
tick (18.2 sec.).
24-27
9 KEYBOARD INT Handles keyboard
activity and
controller.
40-43
10
VIDEO 10
Handles all video
reads and writes,
palettes, lightpens,
and scrolling.
44-47
11
EQUIPMENT
Reports attached
DETERMINATION
devices, i.e., printers,
RS-232 ports,video,
disc drives,
80287.
Basic Input/Output System 53

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