Xerox 560 Reference Manual

FAST MEMORY
ARITHMETIC AND CONTROL UNIT
GENERAL REGISTER BLOCK (TYPICAL)
INSTRUCTION REGISTER
0~1 ______________ ~
1
:::::::::::::.:.:.:::. ~:~:~:~:~:~:~:~:~:~:~:) .. ~:.'~.:~:.~ .. :~ .. :~.:~: .. ~: .. ::.~.:~:. . .............. .
I
··············· ............ : .. -:.:-:.: .. -:.:-......... ........................ .:.:.:- ......... ,
~~~~~~~~~~~:~~;:~:;:; ~:~:~:~:~:;~~;~~~~~~~~r~~~~~:;:~:;:::::::::::::: ·t~:~r~~~~~
I
~:-:·:·:·:·:·:·:·:·:·: .-:::::::::::::::::::::::.: .. :::::.:.:.:.:.:.:.:.:-:.:.:.:.:. ::::::::::::::::::::::::::. :::::::::::::::1
2 {:rrr::r ::::::)~.: ................. :. ::::)):::::::nc:::::::::::::::::::::::::::.:::::: ::::::rt~:l
3
(:: ::.:.:.::::::::: .. :.:.:::..... .:.:.:.:.:.:.:.. >f>~{:: ::::::::::: :.:.:.:-::::::: :::::;:::: : .. ::: .. : .. :': .. ' .. :.::.' .. :': .. :~.:: .. ' .. ::: .. : .. : ... '.:: .. :: .. 1
I Jf;~;~;;;; Itf}~}::::: ............... :.:.:.:.: .. ,:.:: .. - ... - ...... ::::::;::::::::: ~
4 1::I:::::~::::::I::::::::::::::r::r:::::j:: :::::::;:::;::::::f::t::::::::::::::; :::::::::::::::::::::::::::::::::::1
5 1::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::1 .::::):r::::::=::::::::::::::::·: ,::::::::::::::I:I:t::tl
8~1 ______________ ~
9 ..... 1 ________ ......
1O~1 ______________ ~
11 I"-- ________________ ~
12 ~I ________________ ~
13 ~I ________ ~
14 ~I _________ .....
15
16 Jl
----------------------
171 ~ __________ ......
18 I~ ________________ __
19 IL... ________ ....
20 ..... 1 ________ ......
21 ..... 1 ________ _
Index
Registers
o Indirect Access Flag
o
III 1111 I Operation Code Field
1 7
DID General Register Designator
8 11
ITIJ Index Register Designator
12 14
Reference Address Field
111111111 11111111 III
15 31
....... -- ....
Memory
1
31-digit
Decimal
Accumu-
lator
Reserved
PROGRAM STATUS WORDS
OJ]] Condition Code
o 3
I/O Processors I
I I
I
Read/Write Direct
1 •
Interrupts
Mopping
• •
.Access Protection.
ITO Floating-point Mode Control
5 7
o Master/Slave Mode Control
8
D Memory Map Control
9
[JJ Arithmetic Trap Masks
1011
Instruction
,..,...'T"'"T""'T'"T..,....,~'T"'"T""'I""T"'T'"'T..,....I""""I Address
Id I I I I I I I I I I I " I I I or
15 31 Extended
[ill Write Key
32 35
[ill Interrupt Inhibits
37 39
OJ Register Block Pointer
5859
o Register AI tered
60
Displacement
o Mode Altered Control
61
L---..I :: --=---=----=------,1 ~I _--------'
Figure 2. The Basic Processor
10 Basic Processor

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