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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!
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