Motorola DSP96002 - Manual (Page 569)

B-50 DSP96002 USER’S MANUAL MOTOROLA
;shift other part 1 1 or d1,d0 ;merge
bits together 1 1
--- ---
Totals: 4 4
3. Dynamic rotate left 0-32 bits. The 32 bit integer to be rotated is in d0.l. The number of bits to
rotate is in d2.l.
In the special case of a zero shift count, the resulting carry is the most significant bit. In the
special case of a 32 shift count, the resulting carry is the least significant bit. In both cases, the
register shifted is unchanged.
Program ICycles
Words
move #32,d1.l ;get 32 1 1 sub
d2,d1 d2.l,d1.h ;32-shift, move shift 1 1 move
d1.l,d0.h ;move other shift 1 1 lsr d0,d0 d0.l,d1.l
;shift, copy input 1 1 lsl d1,d1 ;shift
other part 1 1 or d1,d0 ;merge bits
together 1 1
--- ---
Totals: 6 6
4. Dynamic rotate right 0-32 bits. The 32 bit integer to be rotated is in d0.l. The number of bits
to rotate is in d2.l.
In the special case of a zero shift count, the resulting carry is the least significant bit. In the
special case of a 32 shift count, the resulting carry is the most significant bit. In both cases,
the register shifted is unchanged.