Xerox 560 Reference Manual

SH SUBTRACT HALFWORD
(Halfword
index alignment)
SUBTRACT HALFWORD extends the sign of the effective
halfword 16 bit positions to the left (to form a 32-bit word
in
which bit positions 0-15 contain the sign of the effec-
tive halfword), forms the two's complement of the resulting
word, adds the complemented word to the contents of reg-
ister R, and loads the sum into register R.
Affected: (R), CC
-EH + (R)-R
SE
Condition code settings:
2 3 4 Resu It in R
-
0 0 Zero
-
0 Negative
o Positive
Trap: Fixed-point overflow
- 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' after loading
the sum into register R; otherwise, the BP executes the
next instruction in sequence.
SW SUBTRACT WORD
0/'Iord index alignment)
SUBTRACT WORD forms the two's complement of the effec-
tive word, adds that complement to the contents of regis-
ter R, and loads the sum into register R.
Affected: (R), CC Trap: Fixed-point overflow
-EW
+ (R)-R
Ccnd:ticr: cede sett:ng~:
2 3 4 Resu I tin R
-
0 0 Zero
-
0 Negative
62 Fixed-Point Arithmetic Instructions
2 3 4 Result in R
o 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 X143' after loading
the
sum into register R; otherwise, the BP executes the
next instruction in sequence.
so
SUBTRACT DOUBLEWORD
(Doubleword index alignment)
SUBTRACT DOUBLEWORD forms the 64-bit two's comple-
ment of the effective doubleword, adds the complemented
doubleword to
the contents of registers Rand Rul (treated
as a single, 64-bit register), loads the 32 low-order bits of
the sum into register Rul and loads the 32 high-order bits
of the sum into register R.
Affected: (R), (Rul), CC
-E D
+ (R, Ru 1) - R, Ru 1
Condition code settings:
2 3 4 Result in
R, Rul
- - 0 0 Zero
- - 0
Negative
o Positive
Trap: Fixed-point overflow,
instruction exception
- 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' after the re-
sult is loaded into registers Rand Rul; otherwise, the BP
The R fie Id of the SD instruction must be an even va lue for
proper
operation of the instruction; if the R fie Id of SD is
an odd value, the instruction traps to location X'4D',
instruction exception trap; the contents in register R remain
unchanged.

Xerox 560 Specifications

General

Print Resolution	2400 x 2400 dpi
Monthly Duty Cycle	Up to 300, 000 pages
Duplex Printing	Standard
Operating System Compatibility	Windows, Mac OS, Linux
Connectivity	Ethernet, USB
Paper Size	Up to 13 x 19.2 inches
Type	Multifunction Printer