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UIC 20931000 Intersil 8Kx8 CMOS Memory (8221 Controllers)

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UIC 20931000 Intersil 8Kx8 CMOS Memory (8221 Controllers)

Postby unidec » Fri Dec 04, 2009 8:47 pm

This is a setup table for old UIC 20931000 Intersil C-Mos Memory Bd. 8K x 16 boards. Systems typically used four of these cards, 4KW each for a total of 32KW or 64KB or CMOS Ram. The memory cards were segmented by Banks 0, 1, 2 and 3

Bank 0 000000 to 037776 (Octal)
Bank 1 040000 to 077776 (Octal)
Bank 2 080000 to 137776 (Octal)
Bank 3 140000 to 157776 (Octal)

Jumper/eyelets on circuit board

A-B
F
D E
C G

1 2
1 2


Bank 0 1 2 3
SW1 i o i o
SW2 i i o o
A-B o o o o
C-D i i i o
E-F o o o i
E-G o o o o

o = out, i - in
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