HP Vectra User Manual

Clock Cycle
The HP45981 A operates from the master oscillator at 22.440MHz
and the backplane clock at 14.3818MHz.
Adapter-to-System Hardware
Interface
The HP45981A is interfaced to the 80286 microprocessor as an
8-bit memory device and and 8-bit I/O device. All signal lines are
buffered onto the card and load to the system bus. Wait-states
are provided for memory accesses to synchronize the 80286. The
RAM on the card is on four 16 Kbyte x 4 RAM chips.
Jumpers and Connectors
The following card layout shows the connectors and jumpers on
the H P45981 A.
Multi-Mode Video Adapter Card Layout
P3 XXXXXXX
EJ
P1
Figure 19
J2
J1
Multi-Mode Video Adapter Card 81

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