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RCA Spectra 70 User Manual

RCA Spectra 70
260 pages
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Shift Right Double
Logical
(SRDL)
General Description
Format
(RS)
Condition Code
Interruption
Logical
Instructions
• The
entire
contents
of
the
double-length
operand
(two
general
registers)
- even/odd specified
by
the
first address
(R
1
)
are
shifted
right
the
number
of
bit
positions specified
by
the
second
address
(B
2
/D
2
).
The
R3
field
is ignored.
The second address does
not
refer
to a
main
memory location. The low-
order
six bits
of
the
second address
are
used
as
the
count to specify
the
number
of
bits
of
shifting
to be done. The
remaining
bits
are
ignored.
8e
I
Rl
I
R3
I
B2
I
D2
0
7
8
11
12
15
16
19
20
31
•
Unchanged.
•
Address
error:
Specification.
Notes • 1. The first address
must
specify
an
even-numbered
register.
2. All 64 bits
of
the
double-length
operand
are
shifted.
3. Low-order
bits
are
shifted
out
and
lost.
4. Zeros
are
placed into
the
high-order
end
of
the
even-numbered
register.
192

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RCA Spectra 70 Specifications

General IconGeneral
BrandRCA
ModelSpectra 70
CategoryComputer Hardware
LanguageEnglish

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