RCA Spectra 70 - Page 157

Store Halfword
(5TH)
General Description
Format
(RX)
Condition Code
Interrupt Action
Fixed-Point
Instructions
• The rightmost half (16 bits) of the operand in the general register
specified by the first address (R
1
)
is stored unaltered in the halfword main
memory location specified by the second address (X
2
/B
2
/D
2
).
o
7 8 11 12 15 16 19 20
• Unchanged.
•
Address error:
Addressing.
Specification.
Protection.
31
Notes • 1. The 16 high-order bits of the operand specified by the first address
field are ignored by the operation.
2. The operand specified by the first address is unaltered.
148