PNX1301 PHILIPS [NXP Semiconductors], PNX1301 Datasheet - Page 507

• Manufacturer Part Number: PNX1301
• Description: Media Processors
• Manufacturer: PHILIPS [NXP Semiconductors]

PNX1300/01/02/11 Data Book
zex16
SYNTAX
FUNCTION
DESCRIPTION
argument and rsrc1 as the second. (Note: pseudo operations cannot be used in assembly source files.)
32 bits and writes the result in rdest.
modification of the destination register. If the LSB of rguard is 1, rdest is written; otherwise, rdest is not changed.
EXAMPLES
A-209
r30 = 0xffff0040
r10 = 0, r40 = 0xff0fff91
r20 = 1, r40 = 0xff0fff91
r50 = 0x00000091
The
As shown below, the
The
[ IF rguard ] zex16 rsrc1
if rguard then
rdest
zex16
zex16
Initial Values
zero_ext16to32(rsrc1<15:0>)
operation is a pseudo operation transformed by the scheduler into a
operation optionally takes a guard, specified in rguard. If a guard is present, its LSB controls the
PRELIMINARY SPECIFICATION
zex16
operation zero extends the least-significant 16-bit halfword of the argument, r src1, to
rsrc1
rdest
zex16 r30
IF r10 zex16 r40
IF r20 zex16 r40
zex16 r50
31
31
0
0
0
rdest
0
0
0
0
0
0
0
0
0
Operation
r60
r110
0
0
0
0
15
15
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
pseudo-op for pack16lsb
Zero extend 16 bits
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