IBM System/360

REFERENCE DATA
CIRCUIT DATA
Definitions of ALD Page Number Prefixes
I. Adders
l . Addressing Adder
2. IC lncrementer
3. Exponent Adder
4. Main Adder
5. Serial Adder
6. VFL and DEC Adder
II. Decoders
l . Op Decoders
2. FLP and Gen. Decoder
3. Addressing and Pre FTH
4. Trap Decode
5. Reg Decode
6. ROM Decode
111. Counters
1 . Instruction Ctrs
2. Local Store Address Ctr
3. Misc. Ctr
IV. Busing (Excluding Memory Bus)
V. Registers
l. A Reg
2. B Reg (BOP REG, Mod 70)
3. D Reg
4. E Reg ( PSW for Mod 70)
5. F Reg ( 1/0 Reg, Mod 70)
6. G Reg (Gen Purpose, Mod 70)
7. H Reg
8. J Reg
9. K Reg
10. L Reg
11. M Reg
12. N Reg (Op Code Reg, Mod 70)
13. P Reg (FLT Pt Reg, Mod 70)
14. Q Reg (FLT Pt Reg, Mod 70)
15. R Reg (Reg Bus Latch, Mod 70)
16. S Reg (Shift Ctr and Exp in, Mod 70)
17. T Reg
18.UReg
19. V Reg
20. W Reg
21. X Reg
22. VFL and Decoder Reg, Mod 70
23. Direct Data Reg
AA-AB
AC-AD
AE-AF
AM-AQ
AS
AV-AW
DN
DP
DA
DB
DG
DR-DS
CA-CB
CC-CD
CE-CZ
BA-BZ
RA
RB
RD
RE
RF
RG
RH
RJ
RK
RL
RM
RN
RP
RQ
RR
RS
RT
RU
RV
RW
RX
RY
RZ
46 S/360
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