Store
Scratch
Pad
(SSP)
General Description
Format
(55)
Condition Code
Interrupt Action
Privileged
Instructions
• Operands
from
the
scratch-pad memory,
starting
with
the
location
specified by
the
first address
(Bt/D
1
),
are
stored in main memory locations,
starting
with
the
location specified by
the
second address (B
2
/D
2
).
DO L
o
7 8
15
16
19 20
• Unchanged.
•
Privileged operation.
Address
error:
Addressing.
Specification.
Protection.
D2
31 32 35 36
47
Notes • 1. The L field provides
an
eight-bit count specifying
the
number
of
scratch-pad memory locations to be stored. An initial count of zero
specifies one word to be stored.
2.
The first address specifies scratch-pad memory words 0 through 127
by
the
seven rightmost bits
of
the
address. The
bits
to
the
left
of
the
seven-bit address
must
be zero.
3. The second address
must
be on a word boundary. (This is a
program
restriction.)
103
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