8K
MEMORY
USERS
MANUAL
INTRODUCTION
Page 1
THE
VECTOR
GRAPHIC
8K
STATIC
MEMORY
OOARD
IS
DESIGNED
'IO
BE
PLUG-IN
COMPATIBLE
WITH
YOUR
VECTOR
1,
ALTAIR, IMSAI
AND
POLY
88
SYSTEMS.
WE
HAVE
PROVIDED
A
HIGH
QUALITY
PRODUCT
BY
USING
THE
FINEST
AVAILABLE
MEMORY
CHIPS
AND
AEROSPACE
QUALITY
PRINTED
CIRCUIT
BOARD.
THE
MEMORY
OPERATES
AT
THE
MAXIMUM
SPEED
OF
SOSOA
MPU
OR
Z-80
MPU
CAPACITY
w'"ITH
00
WAIT
STATES
REQUIRED.
THE
MEMORY
CHIP
ADDRESS
INPUTS
ARE
BUFFERED 'IO
REDUCE
THE
CAPACITANCE
LOADING
ON
THE
ADDRESS
BUS, A
MAJOR
PLUS
SINCE THIS
COULD
EXCEED
2000
PF
IN
A
LARGE
SYSTEM. ADDRESS SELECTION
IS
BY
MEANS
OF
A
DIP
SWITCH
LOCATED
ON
THE
UPPER
EDGE
OF
THE
BOARD.
WITH
THIS
FEATURE
YOU
MAY
CHANGE
THE
OOA...'ID
ADDRESS
FOR
PROORAMS
THAT
RUN
IN
HIGH
MEMORY
WITHOUT
HAVING
'IO
REMOVE
THE
BOARD
FRCM
THE
COMPUTER.
ANorHER
CONVENIENCE
IS
THE
OUTPUT
DISABLE
FEATURE
WHICH
PERMITS
STARr
UP
OF
THE
COMPurER
WITHOUT
THE
FRONT
PANEL
SWITCHES. FURI'HER,
THE
BOARD
CAN
BE
WRITE
PRorECTED. TYPICAL
l?CWER
CONSUMPTION
OF
THE
250
NS
BOARD
IS
1.6
AMPS
USHX:;
FAIRCHILD 2102LHPC CHIPS.
IF
THERE
IS
ANYTHING
THAT
YOU
DO
Nor
UNDERSTAND,
PLEASE
DO
Nor
HESITATE 'IO
CALL
OR
WRITE
US!
