RCA Spectra 70 - Page 237

SUMMARY OF INSTRUCTIONS (Confd)
Fixed-Point Instructions (Cont'd)
Timing (/Lsed
Instruction
OP<16)
Mnemonic Format
Interrupt Action Condition Code (Average and Includes Staticizing)
70/46
Load Halfword 48 LH RX 1.
Address error.
Unchanged.
7.92
Load Multiple 98
LM
RS
1. Address error. Unchanged.
9.60 + 2.88R
Load
Negative 11
LNR
RR
None.
0- Result is zero.
1- Result is less than zero.
6.24
2- Not used.
3 - Not used.
Load Positive
10
LPR RR
1. Fixed-Point overflow.
o - Result is zero.
1-Not used.
6.24
2 -
Result greater than zero.
3 - Overflow.
Load
and Test 12 LTR RR
None.
0- Result is zero.
1 -
Result is less than zero.
5.28
2 -
Result is greater than zero.
3-Not used.
58 L
RX 1. Address error.
8.88
Load Word
Unchanged.
18
LR
RR
2.88
Multiply Halfword 4C MH
RX
1. Address error.
Unchanged.
35.40
5C
M
RX
1. Address error.
65.64
Multiply Word
1C MR RR
Unchanged.
62.52
Shift Left Double
8F
SLDA
RS
1. Fixed-Point overflow.
o - Result is zero.
Under 16 = 11.04 + 0.96 (N)
2. Address error.
1 - Result is less than zero.
16
to 31 = 15.12 + 0.96 (N-16)
2 -
Result is greater than zero.
32
to 47 = 19.20 + 0.96 (N-32)
3 - Overflow.
48
to 63 = 23.28 + 0.96 (N -48)
Shift Right Double 8E
SRDA
RS 1. Address error.
o - Result is zero. Under 16 = 9.36 + 0.96 (N)
1 - Result is less than zero.
16
to 31 = 12.48 + 0.96 (N-16)
2 -
Result is greater than zero.
32
to 47 = 15.60 + 0.96 (N-32)
3-Not used.
48
to 63 = 18.72 + 0.96 (N-48)