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Table 8-3 (Page 2 of 4). TH, RH, and RU Definitions for the Host Request
Byte
Bit
Value
Meaning
RHI
0
b'l'
Definite response 1
I
b'O'
Reserved
2
b'O'
Definite response 2
3
b'O'
ERI
4-5
b'OO'
Reserved
6
b'O'
QRI
7
b'O'
PI
RH2
-
X'OO'
Not applicable
RUO
-
X'41'
RTM header
RUI
-
X'03'
RTM header
RU2
-
X'8D'
RTM header
RU3
X'OOOO'
Ignored (may be nonzero
RU4
but not to be used)
RU5
0
b'O'
Reserved
RU6
I
b'O'
Reserved
2
b'O'
Ignored
3
b'O'
Ignored
4-15
PRID
-
RU7
0
b'O'
Reserved
I
b'O'
Last RU
2
b'O'
First RU
3
b'-'
SNA address list indicator:
4-7
b'OOOO'
o
=
No vector
1
=
Vector describes specific LU
Reserved
RU8
0
b'O'
No concatenation
1-7
b'OOO 0000'
Remaining length of this RU
RU9
0-7
X'--'
DATA and RESET vectors
RUIO
X'8080'
Code point for RTM major vector
RUll
RU12
X'OA'
Length of SNA address
list if RU7 bit 3
=
1
RU13
X'04'
Code point SNA address list
RU14
X'Ol'
Number of TAFs
RU15
X'OOOO
Target address: 7 bytes
through
0000
aa
=
local destination address (DAF')
RU21
0000
aa'
RU22
X'04'
Length of RTM request vector
RU23
X'92'
RTM request vector key
Chapter 8. Network Management and Problem Determination
8-25
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