RCA 70/46 Reference Manual page 142

Load Multiple
(LM)
General Description
Format
(RS)
Condition Code
Interrupt Action
Notes
Fixed-Point
Instructions
• The set of general registers, beginning with the register specified by
the first address (R
1 )
and ending with the register specified by the third
address
(R.~),
is loaded with operands from main memory. The second
address (BdD
2 )
specifies the main memory location of the first word to be
loaded. Loading of the general registers continues in the ascending order
of their addresses beginning with the register specified by R
I •
As many
words as needed are fetched from the main memory location specified,
continuing up to, and including, the register specified by Ra.
o
7 8 11 12 15 16 19 20
31
• Unchanged.
• Address error:
Addressing.
Specification.
•
1. If Rl and Ra specify the same register, only one word is loaded.
2. If the register specified by Ra is less than the register specified by
Rh wrap-around occurs from register 15 to O.
3. The operands specified by the second address are unaltered.
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