NCR Decision Mate V - Memory Expansion Modules

MEMORY EXPANSION MODULES
The memory expansion modules (K200, K202, and K208) are
contained in small housings that fit directly into the I/O bus of
the NCR DECISION MATE V. Three different modules are avail
able; however, only one at a time may be installed; and this must
be fitted to slot 1.
The modules contain semiconductor memory ICs (dynamic
RAM) and a bus interface connector. They are available in the
following sizes:
• 64K bytes — to provide a system capacity of 128K bytes
• 192 K bytes — to provide a system capacity of 256 K bytes
• 448 K bytes — to provide a system capacity of 512 K bytes
a
c
+5V
1
+5 V
2
AOUT7
3
AO UT 6
4
AO UT5
AOUT4
5
AO UT3
6
7
8
9
10
AO UT 2
11
AOUT1
ODO
12
AOUTO
OD1
13
OD2
OD3 14
15
LG R D
16
LGRD
17
18
IDO
19
ID1
20
ID2
21
ID3
22
ID4
23
CAS7/
ID5
24
CAS6/
ID6
25
CAS5 /
ID7
26
CAS4 /
CAS2 /
27
CAS1 /
CAS3/
28
OD4
29
OD5
RAS/
30
WE /
OD6
31 OD7
LGRD
32
LGRD
Figure 2.47 Memory expansion pin assignment
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