tm1300 NXP Semiconductors, tm1300 Datasheet - Page 494

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

TM1300 Data Book
zex16
SYNTAX
FUNCTION
DESCRIPTION
argument and r src1 as the second. (Note: pseudo operations cannot be used in assembly source files.)
bits and writes the result in r dest .
modification of the destination register. If the LSB of r guard is 1, r dest is written; otherwise, r dest is not changed.
EXAMPLES
A-208
r30 = 0xffff0040
r10 = 0, r40 = 0xff0fff91
r20 = 1, r40 = 0xff0fff91
r50 = 0x00000091
The
As shown below, the
The
[ IF r guard ] zex16 r src1
if r guard then
r dest
zex16
zex16
Initial Values
zero_ext16to32(r src1 <15:0>)
operation is a pseudo operation transformed by the scheduler into a
operation optionally takes a guard, specified in r guard . If a guard is present, its LSB controls the
zex16
PRODUCT SPECIFICATION
operation zero extends the least-significant 16-bit halfword of the argument, r src1 , to 32
r src1
r dest
zex16 r30
IF r10 zex16 r40
IF r20 zex16 r40
zex16 r50
0
3
3
0
0
r dest
0
0
0
0
0
0
0
0
0
Operation
r60
r110
0
0
0
0
1
1
r70
r100
unsigned
unsigned
r60
no change, since guard is false
r100
r110
0
0
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
pack16lsb
0x00000040
Zero extend 16 bits
pseudo-op for pack16lsb
0x0000ff91
0x00000091
Philips Semiconductors
sex16 sex8 zex8
ATTRIBUTES
SEE ALSO
Result
with 0 as the first
1, 2, 3, 4, 5
alu
No
53
—
1
1