Stereo System User Manual

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 QQQ
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