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For single-unit addresses (SUA), A=O, B=O,
C=O for MPX, and C=l for ICA:
Device Address
UCW Address
For multiple-unit addresses (MUA), A=l, and
E, F, G. and H are ignored:
Device Address
A
B
c
D
E
F
0
0
0
UCW Address
*
Except for 16K and 24K systems having
both the multiplexer channels and ICA
features.
G
0
H
0
Figure 2-13.
*UCW Formulation (Channel)
2.54.3 CHANNEL 0 (16K AND 24K SYSTEMS WITH
BO'lll THE MPX CHANNEL AND ICA
FE~TURES)
When the standard interface is Cferated on
16K and 24K system as a multiplexer channel
(BYTECH loaded), the following device
addresses are used.
Device
Address
00-07
08-0F
10-17
18-1F
20-27
28-7F
80-FF
00-FF
Usage
Invalid*
MPX channel SUA UCWs
Invalid
MPX channel SUA UCWs
Comrr:unications UC.Ws/LCWs**
Invalid
~PX
channe 1 MUA UCWs
Integrated 1052, 1403,
&
2540***
*
Invalid addresses cause setting of
condition code 3.
**
If the ICA feature is not installed,
these addresses are invalid.
*** Unit addresses for these devices should
not be assigned
in
the ranges reserved
for the MPX channel er ICA feature.
Figure 2-14 gives the UCW allocations
for the multiplexer channel and integrated
communications feature for llK and 24K
systems having both these features.
Multiple-unit addresses (80-FF) and the
corresponding single-unit addresses C18-1F)
are mutually exclusive.
Sixteen MPX
subchannels are available with this system
configuration.
MUA
SUA
Device Device Corresponding
Add rs
Add rs
UCW Address
Feature
9x
1S
co
MPX
Cx
19
cs
Channel
9X
1A
DO
Dx
1B
DS
Ax
1C
EO
Ex
1D
ES
Bx
1E
FO
Fx
1F
FS
--
OS
40
--
09
4S
--
OA
50
--
OB
5S
--
oc
60
--
OD
6S
--
OE
70
--
OF
7S
(UCW)
LCW
--
20
so
00
lntegr.
--
21
SS
OS
Comm.
--
22
90
10
Attach.
--
23
9S
1S
(ICA)
--
24
AO
20
--
25
AS
2S
--
26
BO
30
--
27
BS
3S
Figure 2-14.
MPX and ICA UCW Allocations
for 16 K and 24K systems
Figure 2-15 represents a map of
auxiliary storage module 2 for 16K and 24K
systems having both the MPX and ICA
2025 FEMM (7/69)
2-39
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