Xerox 550 User Manual

2 3 4 Result of Shift
- 0 No overflow on left shift.
Overflow on left shift.
Searching shift terminated with Ro equal to 1.
At the completion of right shifts, the condition code is set
as follows:
2 3 4
o 0
Logical Shift, Single Register
If the shift count, C, is positive, the contents of register R
are shifted left C places, the O's copied into vacated bit
positions on the right. (Bits shifted past RO are lost.) If C
is negative, the contents of register R are shifted right Ici
places, with O's copied into vacated bit positions on the
left. (Bits shifted past R31 are lost.)
Affected: (R), CCl, CC2
Logical Shift, Double Register
If the shift count, C, is positive, the contents of registers
Rand Rul are shifted left C places, with O's copied into
vacated bit positions on the right. Bits shifted past bit
position 0 of register Ru 1 are copied into bit position 31
of register R. (Bits shifted past RO are lost.) If C is nega-
tive, the contents of registers Rand Ru 1 are shifted right
Ici places with O's copied into vacated bit positions on the
left. Bits shifted past bit position 31 of register Rare
copied into bit position 0 of register Ru1. (Bits shifted
past Ru 131 are lost.)
Affected: (R), (Ru 1), CC 1, CC2
Circular Shift, Single Register
If the shift count, C, is positive, the contents of register R
aie shifted left C places. Bits shifted post bit positio(1 0
are copied into bit position 31. (No bits are lost.) If C
is negative, the contents of register R are shifted right
Ici places. Bits shifted past bit position 31 are copied
into bit position O. (No bits are lost.)
Affected: (R), CCl, CC2
70 Shift Instructions
Circular Shift, Double Register
If the shift count, C, is positive, the contents of registers R
and Ru 1 are shifted left C places. Bits shifted past bit
position 0 of register R are copied into bit position 31
of register Ru 1. (No bits are lost.) If C is negative, the
contents of registers Rand Ru 1 are shifted right Ici places.
Bits shifted past bit position 31 of register Ru 1 are copied
into bit position 0 of register R. (No bits are lost.)
Affected: (R), (Rul), CCl, CC2
Arithmetic Shift, Single Register
If the shift count, C, is positive, the contents of register R
are shifted left C places, with O's copied into vacated bit
positions on the right. (Bits shifted past RO are lost.) If C
is negative, the contents of register R are shifted right· lei
places, with the contents of bit position 0 copied into va-
cated bit positions on the left. (Bits shifted past R31
are lost.)
Affected: (R), cc 1 , CC2
Arithmetic Shift, Double Register
If the shift count, C, is positive, the contents of register R
and Rul are shifted left C places, with O's copied into va-
cated bit positions on the right. Bits shifted past bit posi-
tion 0 of register Rul are copied into bit position 31 of
register R. (Bits shifted past RO are lost.) If C is negative,
the contents of registers Rand Ru 1 are shifted right Ici
olacp.s_ with thp. contp.ntc; of hit noc;ition 0 of rpnidpr R
.' --~ ... _ ~- ... - .. -- -" -.- ,---.'._" - _ . . _.;;;J.-._' ...
copied into vacated bit positions on the left. Bits shifted
past bit position 31 of register R are copied into bit posi-
tion 0 of register Ru1. (Bits shifted past Ru131 are lost.)
Affected: (R), (Ru 1), CC 1, CC2
Searching Shift, Single Register
The :)eur(;hing ~hift is circuiar in either direction. if the
shift count, C, is positive, the contents of register Rare
shifted left C bit positions or until a 1 appears in bit posi-
tion O. If C is negative, the contents are shifted right Ici
positions or unti I a 1 appears in bit position O. When the
shift is terminated, the remaining count is stored in regis-
ter 1, which is dedicated to the searching shift instruction.

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