HP Vectra Technical Reference Manual page 362

Table B.3
Equipment Flag (40:010H)
Bit Value
Definition
OFH-OEH
0
no printers installed
1 one printer installed
2 two printers installed
3 three printers installed
ODH-OCH
reserved
OBH-09H
0 no RS··232 ports installed
1
one RS-232 port installed
2
two RS-232 ports installed
3 three RS-232 ports installed
4
four RS-232 ports installed
08H
reserved
07H-06H
0 1 flexible disc drive installed, if bit 0
=
1
1 2 flexible disc drives installed, if bit 0
=
1
OSH-04H
0 video adapter is not monochrome or color
1
initial video mode of 40-column color
2
initial video mode of 80-column color
3 initial video mode of 80-column monochrome
03H-02H
reserved
01H
0 math co-processor not present
1 math co-processor present
OOH
0 no disc drives present
1
some number of flexible disc drives present, see bits 7-6
8.2.4 Keyboard Data Area
This area is used by the keyboard driver to store keyboard states, scancodes and keycodes.
40:018H
01 S40__KBD__STATE2
State of special keys: shift, caps, etc.
(see table B.4).
Secondary state of special keys
(see table 8.5).
Memory Map 353