Alternate Main Processor Board - NCR PC4i Service Manual

SYSTEM OVERVIEW
ALTERlflTE KAIB PROCESSOR BOARD
Since the introduction of the NCR Personal Computer
PC4i a new style Main Processor Board, known as
"Alternate" Main Processor Board (in this manual
sometimes referred to as "Generic" Main Processor
Board) has been introduced. Much of the information
in this manual applies both to the "Alternate" Main
Processor Board and to the two Early-type Main
Processor Boards. The "Alternate" MPB is used in a
variety of NCR computers. Distinguishing
characteristics of this board are its 8 slots, 2
switch packs, VLSI !Cs, RAM location and RAM
accessibility. Computers with such a mainboard
installed are marked with a "G" (which stands for
"Generic") on the PC board rack.
1-8
C