IBM RT Series Hardware Reference Manual page 394

(SHT5 )
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(SHT3
(SHT3)
(SHT3)
(SHT3)
(SHT3)
(SHT3)
(SHT3)
(SHT3)
(SHT5)
(SHT3)
(SHT3)
(SHT3)
(SHT3)
(SHT3)
(SHT3)
(SHT3)
(SHT3)
(SHT2)
(SHT7)
(SHT1)
(SHT2)
(SHT7)
(SHT3)
(SHT8)
Foe
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PARITY
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~
8 A
9 B
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10 C
+
MOP IN 0 (SHT 5,6)
II 0 U7
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11 F
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PARITY CHECK
8 A
9 B
EVEN
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IN I (SHT 5,6)
10 C
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11 F
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2 H
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9 UI9 b
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- lID CH CK (SHT 8)
512 KB Memory Expansion Option (Sheet 4 of 8)