AMSTRAD PC1640 Service Manual page 35

Personal computer, monochrome display, colour display, enhanced colour display
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SI33
S8P
RESET
CK8
READY
BHE
[CI
19
8087-2
NDP
OPTION'
416
AD
IS
ADM
ADI3
ADI2
ADIO
JDS
AD8
AD^
ADS
ADS
AD4
AD3
AD2
RO/GTI
RQ/GTO
BUSY
asi
aso
m
-n,
I
NT87
RESET"-
H-
MS
I
,-j
API
2
^
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ADS
^J
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2-^ UH
zLT
X
CI
17
I
8P
(NPO)
r
NRQGFO
71
k
M8HE
^3
k
MS2
'
k
MSI
5S
MSO
'
1
-
+5V
23
42
1
64
34
KBDATA
KBCLK
NDACK3
MDACK2
WACKO
rRO
ADSTB
MXMEMR
MX
[OH
MX10R
HOLDA
CK24
RESET
CK8
READY
NRG/GTD
NBHE
NS2
NSI
NSC
0125
AMS
3US
GATE ARRAY
ALE
BALE
:ordy
NMEMW
NMEMR
NIOW
MIOR
PC1
640/SD/DD/HD20 CHASSIS
SCHEMATIC DIAGRAM

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