tm1300 NXP Semiconductors, tm1300 Datasheet - Page 488

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

TM1300 Data Book
umulm
SYNTAX
FUNCTION
DESCRIPTION
the 64-bit product into r dest . The operands are considered unsigned integers.
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-202
r60 = 0x10000
r10 = 0, r60 = 0x100, r30 = 0xf11
r20 = 1, r60 = 0x10001000,
r30 = 0xf1100000
r70 = 0xffffff00, r40 = 0x100
As shown below, the
The
[ IF r guard ] umulm r src1 r src2
if r guard then
r src1
temp
r dest
64-bit result
umulm
3
Initial Values
zero_ext32to64(r src1 )
temp<63:32>
6
operation optionally takes a guard, specified in r guard . If a guard is present, its LSB controls the
umulm
unsigned
PRODUCT SPECIFICATION
operation computes the product r src1 r src2 and writes the most-significant 32 bits of
r dest
zero_ext32to64(r src2 )
umulm r60 r60
IF r10 umulm r60 r30
IF r20 umulm r60 r30
umulm r70 r40
3
Unsigned multiply, return most-significant 32
r dest
0
Operation
unsigned
unsigned
r80
r100
3
r src2
3
r50
r90
0
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
r80
no change, since guard is false
r90
r100
dspidualmul quadumulmsb
umulm dspimul dspumul
unsigned
Philips Semiconductors
0x00000001
0xf110f11
0xff
ATTRIBUTES
SEE ALSO
Result
fmul
0
ifmul
140
2, 3
No
—
0
2
3
bits