IBM System/370 145 Reference Summary page 155

LOCAL STORAGE
Word
LS
Byte 0 Byte 1
Byte2 Byte 3
Xand Y
Name Location Line
00 General Register 0 XOYO
01 General Register I XOYI
02 General Register 2 XOY2
03 General Register 3 XOY3
04
General Register 4 XOY4
05
General Register 5 XOY5
06 General Register 6 XOY6
07
General Register 7
XOY7
08 General Register 8 XIYO
09 General Register 9 XI YI
OA
General Register A
XI Y2
OB General Register B XI Y3
oc
General Register C XI Y4
OD General Register D
X1 Y5
OE
General Register E XIY6
OF General Register F XI Y7
AX 10 SRTN Temp Link
X2YO
DI 11 Alter/Display Log Link X2YI
RTX 12 Retry Link X2Y2
DTX 13 Translate Link
X2Y3
x
14 Working X2Y4
R 15 Working
X2Y5
y
16
Working
X2Y6
Q 17 Working X2Y7
MA 18 X3 YO
MBS 19 X3 YI
MX IA X3Y2
MC IB X3Y3
MD
IC
X3Y4
MF
1D X3 Y5
MW 1E X3 Y6
ex
1F
CPU
Link Register X3Y7
11.31