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4-62.
lOP
peA 30003-60008
4-63.
ENABLE/DISABLE. Jumper WI is not installed, enabling the lOP PCA. Installation of
this jumper disables the lOP PCA.
4-64.
MEMORY SIZE. Selection of the memory word size is accomplished by setting a ten
position switch, S3, on the lOP PCA. See figure 4-11.
4-65.
MEMORY MODULE SELECTION. Two four-position switches, SI and S2, are used to
select the memory module. SI and S2 switch positions must always be identical, and set to the
NORMAL position. The remaining switch positions are used only for factory test purposes. Inadver-
tently using a position other than NORMAL could cause the wrong memory module to be selected.
TOP 1 , 3 , - · - - - - - - - - - - " 79
1 , 3 , - - - - - - - - - - 7 9
BOTTOM
2,
4, '
"8°L
j20,
m4' l ii"mnmiiiiiiiiiiiiimiiiii' i 8mO
P1
I
II~
_ _
~
lOP peA
30003·60008
~o
~
/
o~
\..---~T:02~~\P,P4,g"~I~~"~~:--JJi22~2,~4~,~,~~~~"~50r---J:i33~2~,4~,~.~~~~"~50r----.J
BOTTOM 1 , 3 , - ' - - - - - ' 49
1 , 3 , - · - - - - - , 49
1 , 3 , - · - - - - - · 49
MEMORY SIZE
MEMORY MODULE SELECTION
(WORDS)
S3
1 -48K
2-64K
3 - 80K
4 -96K
5 - 112K
6 - 128K
7 - 160K
8 - 192K
9 - 224K
10 - 256K
S1 AND S2
1 - FACTORY TEST POSITION
2 - FACTORY TEST POSITION
3-NORMAL
4 - FACTORY TEST POSITION
NOTE: S1 AND S2 SWITCH POSITIONS MUST
BE IDENTICAL
7522-23
Figure 4-11. lOP PCA Jumper and Switch Locations
4-20
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