Xerox 550 User Manual

Condition code settings:
2 3 4 Result in R
0
0
Zero
-
0 Negative
0
Positive
- 0
No fixed-point overflow
Fixed-point overflow
o
No carry from bit position 0
Carry from bit position 0
If CC2 is set to 1 and the fixed-point arithmetic trap mask
is 1,
the BP traps to location X
'
43
1
after loading the
sum into regi ster R; otherwise, the BP executes the next
instruction in sequence.
AW ADD WORD
0/Vord index alignment)
o 1 2
ADD WORD adds the effective word to the contents of reg-
ister R and loads the sum into register R.
Affected: (R), CC
Trap: Fixed-point overflow
(R) + EW-R
Condition code settings:
2 3
4
Result in R
-
0
0
Zero
-
0
Negative
0
Positive
o No fixed-point overflow
Fixed-point overflow
o
No carry from bi t posi tion 0
Carry from bit position 0
If CC2 is set to T and the fixed-point arithmetic trap mask
(AM) is a 1,
the BP traps to location X
'
43
1
after loading
the sum into register R; otherwise, the BP executes the
next instruction in sequence.
60 Fixed-Point Arithmetic Instructions
AD ADD DOUBlEWORD
(Doub/eword index alignment)
ADD DOUBlEWORD adds the effective doubleword to the
contents of registers Rand Ru1 (treated as a single, 64-bit
register); loads the 32 low-order bits of the sum into reg-
i ster Ru 1 and then loads the 32 high -order bits of the sum
into register R. R must be an even value; if R is an
odd value, the BP traps with the contents in register R
unchanged.
Affected: (R), (Ru 1), CC Trap: Fixed-pointoverf/ow,
instruction exception
(R, Ru1) + ED - R, Ru1
Condition code settings:
2 3
4
Result in R, Ru1
-
0
0
Zero
-
0 Negative
0
Positive
- 0
No fixed-point overflow
Fixed-point overflow
o
No carry from bit position 0
Carry from bit position 0
If CC2 is set to 1 and the fixed-point arithmetic trap mask
(AM) is a 1,
the BP traps to location X
'
43
1
after loading
the sum into registers Rand Ru1; otherwise, the BP exe-
cutes the next instruction in sequence.
The R field of the AD instruction must be an even value for
proper operation of the instruction; if the R fie Id of AD is
an odd value, the instruction traps to location X
'
4D',
instruction exception trap.
Example 1, even R field value:
Before execution
After execution
ED X
'
33333333EEEEEEEE'
X
'
33333333EEEEEEEE
'
(R)
X
l
ll 11 11 111
X 144444445
1
(Ru 1) X
'
33333333
1
X
'
22222221
'
CC xxxx
0010

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