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__________________________ MODEL 2234 DIGITAL FLOW COMPUTER
Table 3-4A. Address vs. IC Chip (DE-10421 series)
Addressed
Displayed
none
0800
1000
1800
2000
7000
7400
7800
7C00
8000
8800
9000
9800
A000
A800
B000
B800
102
Type of
On PC
Memory
Board
Number
PROM
1
PROM
1
PROM
1
PROM
1
PROM
1
RAM
1
RAM
1
RAM
1
RAM
1
PROM
2
PROM
2
PROM
2
PROM
2
PROM
2
PROM
2
PROM
2
PROM
2
I C Number
U12A (Failure
causes
watchdog)
U3A
U13A
U4A
U14A
U19 AND U20
U24 AND U25
U31 AND U32
U37 AND U38
U11
U12
U15
U16
U17
U19
U20
U21
SECTION 3
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