IBM System/370 145 Reference Summary page 152

Byte Bit CKCPT-27
0
0-7
CKCPTO Bits 0-7
1
0-7 CKCPT1 BitsS-15
0
1
2
2 3
CKCPT2 Bots 16-19
4
}Not Used
5
6
7
0 CKC Submask
1 PT Submask
2
Error Bit
3
3 CKCPT3
Manual Mode
4
Control
CKC Interrupt
5 Bits PT Interrupt
6
Update Latch
7 Not Used
(CCxxx)
Byte Bot TLB-2E
0
0-7
VA
Bits 0-7
0
1
2
1 3
VA
Bots 8-12
4
5
~
Not Used
6
7
(MT311-344)
0
1
2
2
3
RA
Bots 0-7
4
5
6
7
0
1
2
3
3
RA
Bits8·12
4
1111
5
} Not Used
6
7
(MT111-132)
11.28