IBM 3708 Description page 267

Table 8-5 (Page 2 of 5). SNA, TH, RH, and RU Definitions for Solicited and
Unsolicited 3708 Responses
Byte Bit Value Meaning
RHO 0
b'O'
Request
1-2
bIOO '
FMD
3
b'O'
Reserved
4
b'l'
Format indicator
5
b'O'
Sense data included
6-7
b'll I
Chain state indicator
RHI 0
b'l'
Definite response I
I
b'O'
Reserved
2
b'O'
Definite response 2
3
b'O'
ERI
4-5
bIOO '
Reserved
6
b'O'
QRI
7
b'O'
PI
RH2
-
X'OO'
Not applicable
RUO
-
X
1
41 '
RTM header
RUI
-
X
1
03 '
RTM header
RU2
-
X ' 8D'
RTM header
RU3,4
X'OOOO'
Ignored
RU5 0
b'O'
Reserved
RU6 I
b'O'
Reserved
2
b'O'
Ignored
3
b'O'
Ignored
4-15 PRID from request (000 if unsolicited)
RU7 0
b'-'
o
=
Unsolicited; 1
=
Solicited
1
b'-'
o
=
Last; 1
=
Not last
2
b'-'
o
=
First; 1
=
Not first
3
b'l'
SNA address list included
4-7
b '0000 ,
Reserved
RU8 0
b'O'
No concatenation
1-7
b'OOO 0000'
Remaining length of this RU
RU9
X'25'
No DATA or RESET vectors
X'27'
No DATA vector but RESET vector
X'46'
DATA vector but no RESET vector
X'48'
DATA and RESET vectors
RUIO,11
X'0080'
Code point for RTM data reply
RU12
X'll'
Length of SN A address list
RU13
X'04'
Code point SNA address list
RU14
X'02'
Number ofTAFs
8-30
IBM
3708 Description