Motorola DSP96002 User Manual
Page 333
MOTOROLA
DSP96002 USER’S MANUAL
A - 145
ER Status Bits:
INX
- Set if the result of the addition, subtraction or multiplication is inexact. Cleared oth-
erwise.
DZ
- Always cleared.
UNF
- Set if the result of the addition, subtraction or multiplication underflows. Cleared
otherwise.
OVF
- Set if the result of the addition, subtraction or multiplication overflows. Cleared oth-
erwise.
OPERR- Set if one of the multiply operands is infinity and the other is zero. Set if the addition
operands are opposite-signed infinities. Set if the subtract operands are like-
signed infinities. Cleared otherwise.
SNAN - Set if anyone of the source operands is a signaling NaN. Cleared otherwise.
NAN
- Set if result of the addition is a NaN. Cleared otherwise.
UNCC - Always cleared.
IER Flags: Flags changed according to standard definition.
Instruction Fields:
D1
D D
Dn
n n
where nn = 0-3
D2
d d
Dn
n n
where nn = 0-3
S3
s s s
Dn
n n n
where nnn = 0-7
10
0sss
ddQQ
QQDD
31
14 13
0
OPTIONAL EFFECTIVE ADDRESS EXTENSION OR IMMEDIATE LONG DATA
DATA BUS MOVE FIELD
Instruction Format:
FMPY S1,S2,D1 FADDSUB.X D3,D2 (move syntax - see the MOVE instruction
description.)
FMPY S2,S1,D1 FADDSUB.X D3,D2 (move syntax - see the MOVE instruction
description.)
S1*S2
Q QQ Q
D0*D4
0 0 0 0
D4*D4
0 0 0 1
D4*D5
0 0 1 0
D4*D6
0 0 1 1
D5*D6
0 1 0 0
D4*D7
0 1 0 1
D5*D7
0 1 1 0
D6*D7
0 1 1 1
D4*D8
1 0 0 0
D5*D8
1 0 0 1
D6*D8
1 0 1 0
D7*D8
1 0 1 1
D4*D9
1 1 0 0
D5*D9
1 1 0 1
D6*D9
1 1 1 0
D7*D9
1 1 1 1
Timing: 2 + mv + da oscillator clock cycles
Memory: 1 + mv program words