IBM 2025 Maintenance Manual page 187

Processing unit
Table of Contents

Advertisement

FF are valid.
Integrated 2311 units
hcwever, can be Ox-Fx and consume sixteen
of these 256 possible address corrbinaticns.
2.54.2 CHANNEL 0 (EXCEPT 16K AND 24K
SYSTEMS WITH BCTH THE
~PX
CHANNEL
.AND
ICA
FEATURES)
When the standard interface channel feature
is installed and the BYTECH (rrultiplexer)
ccre load is containea in control storage
on 32K and 48K systerrs, the f cllowing
device aaaresses rr.ay te usea.
usage
Device
AddJ;e§.S
00-lF
20-3F
MPX Channel single-unit adapter
(SUA) addresses
Co~munications
attachment
addresses*
40-7F
80-FF
Invalid (conditicn code 3)
MPX channel multiple-unit adapter
(f.'.UA) addresses
00-FF
Integrated 1052, 1403, and 2540**
*
If the Integrated communications
Attachment CICA) feature is net
installed,
USE
Of these aadresses
results in condition code 3.
** Althcugh these integrated attachment
features can use any aaaress (00-FF),
they should be assigned an address
outside the ranges allocated for the MPX
addressing capabilities cf these
facilities are not decreased.
0
7 8
0 SUA 00 or MUA 8x
SUA 10
1 SUA 01 or MUA 9x
SUA 11
2 SUA 02 or MUA Ax
SUA 12
3 SUA 03 or MUA Bx
SUA 13
4 SUA 04 or MUA Cx
SUA 14
5 SUA 05 or MUA Ox
SUA 15
6 SUA 06 or MUA Ex
SUA 16
7 SUA 07 or MUA Fx
SUA 17
8 SUA OB
SUA 18
9 SUA09
SUA 19
A SUA OA
SUA 1A
B SUA OB
SUA 1B
C SUA OC
SUA 1C
D SUA OD
SUA
10
E SUA OE
SUA 1E
F SUA OF
SUA 1F
*(Except 16K and 24K Systems
having both MPX and ICA
features)
F
Figure 2-11.
*Auxiliary Storage Module 2
(Channel)
2-38 (7/69)
Figure 2-11 is a map of auxiliary
storage module 2 shewing single-unit
addresses and multiple-unit addresses
(inside the figure>, and the corresponding
UCW addresses (figure cccrdinates), for
systems except 16K and 24K systems having
l:oth the MPX channel and ICA features.
Eight ucws (00-07) can be used either
l:y
SUA or MUA device addresses.
Thirty-two
subchannels are available (Figure 2-12).
MUA
SUA
Device
Device
Corresponding
Add rs
Add rs
UCW Address
Bx
00
00
--
10
08
9x
01
10
--
11
18
Ax
02
20
--
12
28
Bx
03
30
--
13
38
Cx
04
40
--
14
48
Ox
05
50
--
15
58
Ex
06
60
--
16
68
Fx
07
70
--
17
7B
--
08
80
--
1B
88
--
09
90
--
19
9B
--
OA
AO
--
1A
AB
--
OB
BO
--
1B
B8
--
oc
co
--
1C
C8
--
OD
DO
--
10
DB
--
OE
EO
--
1E
E8
--
OF
FO
--
1F
F8
*For all versions except the
Combinational Versions
of ICA and MPX Channel
and 16K or 24K Program
Storage
Figure 2-12.
*UCW
Allocations (Channel>
The device address is used to develop
the ucw address (except for 16K and
24K
systems having both the rrultiflexer channel
and ICA features) as
shown
in Figure 2-13.

Advertisement

Table of Contents
loading

Table of Contents