RCA Spectra 70 - Page 142

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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.

133

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