Processor Board - HP Vectra Reference Manual

SECTION 2. PROCESSOR
BOARD
The cpu of the processor board is the Intel 80286 microprocessor.
Other components of this board are:
*
16MHz system clock
*
three programmable timers
*
seven backplane I/O slots
*
19-1evel interrupt controller
*
7-channel DMA
,,.-
*
CMOS real-time clock plus RAM chip that operates with
battery back-up when the system is off or during a power
failure
*
keyboard and input device controller
*
speaker attachment
*
flexible disc controller subsystem
A processor extension card for memory is attached to the
processor board of the HP Vectra PC through connector P5.
The fo!lowing illustration is a layout of the processor board (HP
assembly number 45935-60001). Included in the illustration are
the components and the connectors.
Processor Board 7