IBM System/370 145 Reference Summary page 59

UPPER ROLLER-LOGIC REFERENCE
Pos1t1on 3 Control Register
MICROPROGRAM CONTROL REG BYTE 0 MICROPROGRAM CONTROL REG BYTE 2 P MICROPROGRAM CONTROL REG BYTE 3
WORD TYPE MICROPROGRAM CONTROL REG BYTE 1 IF STOA 1 CYCLE OFF C REG=- NEXT CONTROL WORD
REG 1 2 NOTE IF STOA 1 CYCLE ON C REG=- CURRENT CONTROL WORD
RC111 RC121 RC131 RC141 RC151 RC161 RC171 RC181 RC191 RC111 AC131 AC131 AC141 RC151 RC161 RC171 AC181 RC191 RC111 RC121 RC131 RC141 RC151 AC161 RC171 AC181 RC191 RC111 RC121 AC131 RC141 RC151 RC161 RC171 AC181 RC191
Pos1t1on 4 MB 2, MB 3, N2, N3
STORAGE BACKUP ADA REG BYTE 2 P STORAGE BACKUP ADA REG BYTE 3
NEXT CONTROL WORD ADA REG BYTE 2 P NEXT CONTROL WORD ADA REG BYTE 3
IF NOT IN STOA t CYCLE MB
REG~
ADDRESS OF LAST CONTROL WOAD EXECUTED IF TRAP 1 CYCLE OFF N REG NEXT CONTROL WORD ADDRESS
NOTE 1F IN STOR 2 CYCLE (AFTER STOR 1 CYCLE ON) MB REG= BYTE 2 and 3 OF DATA ADDRESS
NOTE
IF TRAP 1 CYCLE ON N REG - LINK ADDRESS FOR TRAP
RM035 RM035 RM036 RM035 RM035 RM035 RM035 RM073 RM073 RM073 RM073 RM073 RM051 RM051 RM052 RM052
RM033 RM033 RM033 RM034 RM034 RM034 RM034 RM034 RM045 RM045 RM045 RM045 RM045 RM051 RM051 RM052 RM052
Position 5 B-Reg1ster
B REGISTER BYTE 0 B REGISTER BYTE 1 B REGISTER BYTE 2
R I TER YTE
B-REGISTER BYTES 0 1 "'INPUT TO Z REG BYTES 0-1
NOTE
8-REGlSTER BYTES 0 3
=
B SOURCE INPUT TO ALU/OUTPUT FROM B LOCAL STORAGE
RA113 RA113 RA114 RA114 RA114 RA123 RA123 RA123 RA124 RA124 RA142 RA133 RA133 RA133 RA134 RA134 RA134 RA143 RA143 RA143 RA144 RA144 RA144 RA153 AA153 AA153 RA154 AA154 RA154 RA163 RA163 RA163 RA164 TA164 RA164
Position 6 Z-Reg1ster
Z
REGISTER BYTE 0
Z REGISTER BYTE 1
REG
Z REGISTER BYTE 2
NOTE
Z-REG BYTES 0 3 OUTPUT OF ALU IN PRESENT CYCLE
Z-REG BYTES 0 3 INPUT TO SPTL REGS AND DREG
Z REGISTER BYTE 3
AL147 Al144 AL144 AL144 AL144 AL134 Al134 AL134 AL134 AL127 AL124 AL124 AL124 AL124 AL114 AL114 AL114 AL114 AL137 AL144 AL144 AL144 Al144 AL134 AL134 AL134 AL134 AL117 AL124 AL124 AL124 AL124 AL114 AL114 AL114 AL114
Pos1t1on 7 D-R eg1ster
D
REG
D REGISTER BYTE 0
0 REGISTER BYTE 1
0 REGISTER BYTE 2
D REGISTER BYTE 3
NOTE 0 REG1STE R BYTES 0 3 =OUTPUT FROM Z REGISTER 1N LSST CYCLE
RA115 RA115 AA115 RA115 RA1l6 RA116 RA125 RA125 AA125 RA125 RA126 RA126 RA135 RA135 RA135 AA135 RA136 RA136 AA145 RA145 RA145 RA145 AA146 AA146 AA155 RA155 RA155 AA155 RA156 AA156 AA165 AA165 RA165 AA165 RA166 RA166
Pos1t1on 8 MC Register (MCKA External Address 06)
LS A
LS B
LS A
LS B DEST
LA A,B
LS
c
ACB COMP H ALU 2 ALU 2 A B D EXT EXT TXT EXT INTV
SORC SORC
DEST
DEST BYTE DEST CTRL
REG
REG LS
FLUSH REG REG REG REG HALF HALF ALU REG REG REG REG REG OEST ESDT SORG CTRL TIMER REG TOD
cs
ADR ADR ADR ADR CTRL ADR ASM PTY PTY COMP THAU
PTY PTY PTY PTY SUM SUM LOGL SHIFT SHIFT SHIFT PTY PTY
x
y y
AMS
PTY OUP CLOCK ADR
RE021 RE021 RE021 RE021 RE022 AE021 RE021 RE021 RE022 RE023 RE023 AE023 RE023
RE024 RE024 RE024 RE036 RE031 RE031 RE032
RE031 RE033
RE033 RE033 RE033 RE036 RE035 RE035 RE035 RE035 RE034 RE034 RE034 RE034
2.32