tm1300 NXP Semiconductors, tm1300 Datasheet - Page 294

• Manufacturer Part Number: tm1300
• Description: Tm-1300 Media Processor
• Manufacturer: NXP Semiconductors

TM1300 Data Book
asli
SYNTAX
FUNCTION
DESCRIPTION
result in r dest equal to r src1 arithmetically shifted left by n bits. The value of n must be between 0 and 31, inclusive.
Zeros are shifted into the LSBs of r dest while the MSBs shifted out of r src1 are lost.
modification of the destination register. If the LSB of r guard is 1, r dest is written; otherwise, r dest is unchanged.
EXAMPLES
A-8
r60 = 0x20
r10 = 0, r60 = 0x20
r20 = 1, r60 = 0x20
r70 = 0xfffffffc
r80 = 0xe
As shown below, the
The
[ IF r guard ] asli( n ) r src1
if r guard then {
}
asli
r dest <31: n >
r dest < n –1:0>
Initial Values
operations optionally take a guard, specified in r guard . If a guard is present, its LSB controls the
Intermediate result
(example: n = 3)
r src1 <31– n :0>
0
asli
PRODUCT SPECIFICATION
operation takes a single argument in r src1 and an immediate modifier n and produces a
r src1
r dest
asli(3) r60
IF r10 asli(3) r60
IF r20 asli(3) r60
asli(2) r70
asli(30) r80
3
3
r dest
32 bits from r src1
Operation
Left shifter
r90
r120
r125
r100
r110
Arithmetic shift left immediate
3
0
0
0
0
0
0
0
0
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
asl asr asri lsl lsli lsr
r90
no change, since guard is false
r110
r120
r125
Shift amount n
from operation modifier
Philips Semiconductors
0x100
0x100
0xfffffff0
0x80000000
lsri rol roli
ATTRIBUTES
SEE ALSO
Result
shifter
7 bits
0..31
1, 2
11
1
1