HP Vectra VE5 3 Series Technical Reference Manual page 29

FDC
Keyboard and Mouse
Controller
RTC
Serial EEPROM
General Purpose I/O
The integrated flexible drive controller (FDC) supports any combination of
two from the following: tape drives, 3.5-inch flexible disk drives, 5.25-inch
flexible disk drives. It is software and register compatible with the 82077AA,
and 100% IBM compatible. It has an A and B drive-swapping capability and a
non-burst DMA option.
The computer has an 8042-based keyboard and mouse controller (the
connector pin layouts are shown on page 33). The computer is supplied with
a Logitech 2-button mouse, and a C3758A keyboard with the following
features:
Space bar power on, to start the computer from the Off state (if
is enabled in the Setup program).
from keyboard
Windows key (next to the
clicking the "Start" button on the Windows 95 task bar.
Pull-down key (next to the right
clicking the right mouse button.
The real-time clock (RTC) is 146818A-compatible. The configuration RAM
is implemented as 256 bytes of CMOS memory.
This is the non-volatile memory which holds the default values for the CMOS
memory (in the event of battery failure, or the user pressing
When installing a new system board, the Serial EEPROM will have a blank
serial number field. This will be detected automatically by the BIOS, which
will then prompt the user to enter the serial number which is printed on the
identification label on the back of the computer.
The NS87308 and NS87307 provide a number of general purpose I/O pins.
Some of these are used on the HP Vectra VE 5/xxx series 3 to sense the
current settings of system board switches and jumpers.
Host bus frequency selection (S2), as indicated by jumper J7
Host bus frequency selection (S1), as indicated by jumper J7
Level-2 cache memory size determination (KPRES2)
Level-2 cache memory size determination (KPRES1)
Ratio of Processor frequency to Processor Local Bus frequency (as per SW2)
Ratio of Processor frequency to Processor Local Bus frequency (as per SW2)
keys), which has the same effect as
key), which has the same effect as
Description
2 System Board
Devices on the ISA Bus
power on
in Setup).
GPIO number
GPIO10
GPIO11
GPIO12
GPIO13
GPIO14
GPIO15
21