Xerox 550 User Manual

FAST MEMORY
ARITHMETIC AND CONTROL UNIT
GENERAL REGISTER BLOCK (TYPICAL)
INSTRUCTION REGISTER
ol~ ______________ ~
1 I.I:::::::.:::::}:=:::······ ':):::::fff::::rrttr::::t:ttt···:::::\::tt::tl
2 1:=:::"::::::::::':: :::::::r:t:::::ttI:::::I:::t:::::::I:::.::I:}::::·::::::::t:':::I:I::i'::::::]
3 1'.::I::::::::::r:::::::=:,: .::::f:::Im:tt:::fIttt::\:t:II:t:::::::!::::'j':·::II!::::::!::1
4 II:::::.:::::--::::::::!:}f::: :tI:·:,:::::::!::=::::::·,!:::!:!:::':::'I:\::I::.:.:!!:.: .. :.:::::: .• : •• !:.::::::.]
7 I i:::.::::i:.:::·''):;:::::.::'::i:::::i:::::::::·:::::::::: ::::?:ff.?::ftt:·::::::::::::f:::D::::ul.
8~1 ______________ ~
9~1 ______________ ~
10~1 ________________ ~
11 ~I ________________ ~
12 ~I ________________ ~
13~1 ________________ ~
14 '-' _________ ~
15
16
17 I~ _________ ......
18 '-I ________________ ~
191 ~ _______________ .....
20 ~I _______________ .....
211 ~ ______________ .....
I I
10 Basic Processor
Index
Registers
o Indirect Access Flag
o
III II II I Operation Code Field
1 7
[]]]J General Register Designator
8 11
ITO Index Register Designator
12 14
Reference Address Field
IIII1111111111111111
15 31
....... -- .....
Memory
•
Reserved
I/O Processors I
• r
I
Read/Write Direct
• r
•
Interrupts
tv\apping
• r
• Access Protecti on •
PROGRAM STATUS WORDS
[[OJ Condition Code
o 3
ITO Floating-point Mode Control
5 7
o Master/Slave Mode Control
8
o Memory Map Control
9
OJ Arithmetic Trap Masks
1011
Instruction
Id I III I II I I I II I I I I !ddress
15 31 Extended
om Write Key
32 35
[[IJ Interrupt Inhibits
37 39
OJ Register Block Pointer
5859
o Register Altered
60
o Mode Altered Control
61
Displacement
Figure 2. The Basic Processor

Xerox 550 Specifications

General

Monthly Duty Cycle	Up to 300, 000 pages
Connectivity	Ethernet, USB
Print Speed (Color)	Up to 50 ppm
Duplex Printing	Standard
Printer Type	Laser
Supported Operating Systems	Windows, macOS, Linux
Paper Size	A4, Legal, Letter