PNX1300 Philips, PNX1300 Datasheet - Page 321

• Manufacturer Part Number: PNX1300
• Description: Media Processors
• Manufacturer: Philips

PNX1300/01/02/11 Data Book
dspiabs
SYNTAX
FUNCTION
DESCRIPTION
first argument zero and second argument equal to the
in assembly source files.)
[0x7fffffff..0]), and stores the clipped value into rdest. All values are signed integers.
modification of the destination register. If the LSB of rguard is 1, rdest is written; otherwise, rdest is not changed.
EXAMPLES
A-23
r30 = 0xffffffff
r10 = 0, r40 = 0x80000001
r20 = 1, r40 = 0x80000001
r50 = 0x80000000
r90 = 0x7fffffff
The
The
The
[ IF rguard ] dspiabs rsrc1
if rguard then {
}
if rsrc1 >= 0 then
else if rsrc1 = 0x80000000 then
else
dspiabs
dspiabs
rdest
rdest
rdest
dspiabs
Initial Values
rsrc1
0x7fffffff
–rsrc1
operation is a pseudo operation transformed by the scheduler into an h_
operation optionally takes a guard, specified in rguard. If a guard is present, its LSB controls the
operation computes the absolute value of rsrc1, clips the result into the range [2
PRELIMINARY SPECIFICATION
dspiabs r30
IF r10 dspiabs r40
IF r20 dspiabs r40
dspiabs r50
dspiabs r90
rdest
dspiabs
Operation
r60
r80
r110
argument. (Note: pseudo operations cannot be used
r70
r100
Clipped signed absolute value
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
r60
no change, since guard is false
r100
r80
r110
h_dspiabs h_dspidualabs
dspiadd dspimul dspisub
dspuadd dspumul dspusub
pseudo-op for h_dspiabs
Philips Semiconductors
0x00000001
0x7fffffff
0x7fffffff
0x7fffffff
dspiabs
ATTRIBUTES
SEE ALSO
Result
with a constant
31
–1..0] (or
dspalu
1, 3
No
65
—
1
2