Xycom XVME-682 Manual page 9

X V M E - 6 8 2 Manual
October , 1989
1 . 5 XVME-682 C P U M O D U L E O P E R A T I O N A L DESCRIPTION
F i g u r e 1 - 1 i l l u strates the functi o nal i t y of the X V M E - 6 8 2 C P U card. A descri p ti o n o f the
c o m p o n e n t s i s gi v en o n t h e opposi t e page.
WATCHDOG
KEYBOARD
TIMER I/F
L O C A L AT BUS
80287
ROM 80286
NPX
BIOS CPU
M A T H COPROCESSOR
(OPTIONAL)
MASTER/SLAVE I/F
VMEbus
F i g u r e 1 - 1 X V M E - 6 8 2 C P U C a r d Bl o ck Diagram
1-5
P C / A T BUS I/F
C O M 1 COM LPT 1
T W O SERIAL PARALLEL
PORTS INTERFACE
BUFFERS
B A T T E R Y -BACKED
T O D CLOCK
1 . 4 M B Y T E S DUAL-
P O R T E D RAM
VMEbus
GrOUP Q t y
ual i Instrrentati o n ... G u a r a n t e e d I ( 8 8 8 ) 8 8 - S O U R C E I www.artisantg.com