HP Vectra User Manual

Table 7.5
Color Adapter Connector (P3) Pin Assignments
Pin
Signal
1/0
Signal Description
1
GND
Ground
2
INTENSITY 0 Intensity dot stream
3 RED 0
Red dot stream
4 GND Ground
5 GREEN 0 Green dot stream
6 BLUE 0
Blue dot stream
7
GND
Ground
8
COMPSYNC
0 Composite sync
9 HSYNC 0 Horizontal sync
10
GND Ground
11
VSYNC
0
Vertical sync
12
MCLK 0 Dot rate clock
13
GND Ground
14 -PRESENT I Board present
Character Generator ROM
The character generator ROM for the HP45981 A is an 128 Kbyte
bit ROM (16 Kbyte x 8) containing four character sets. Each set
consists
of 256 patterns. Depending on the monitor in use either
an 8
or 16 high cell is selected. The font bit (bit 2) of the
extension control register and the monitor determines the
character set that is selected. A 15kHz monitor selects the eight
row version, while a 25kHz monitor selects the 16 row version.
Each character set is stored in contiguous 4 Kbytes in the ROM
defined by the following chart. (The character sets are given in
Section 5.)
Set Font
o STD
1 STD
2 HP
3 HP
Size Location
8x8
OOOO-OFFF
16x8 1000-1 FFF
8x8
2000-2FFF
14x8 3000-3FFF
Multi-Mode Video Adapter Card 85

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