tm1300 NXP Semiconductors, tm1300 Datasheet - Page 477

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

Philips Semiconductors
Unsigned 8-bit load
pseudo-op for uld8d(0)
SYNTAX
FUNCTION
DESCRIPTION
argument. (Note: pseudo operations cannot be used in assembly source files.)
and writes the result in r dest . This operation does not depend on the bytesex bit in the PCSW since only a single byte
is loaded.
defined only for 32-bit loads and stores.
modification of the destination register and the occurrence of side effects. If the LSB of r guard is 1, r dest is written and
the data cache status bits are updated if the addressed location is cacheable. if the LSB of r guard is 0, r dest is not
changed and
EXAMPLES
r10 = 0xd00, [0xd00] = 0x22
r30 = 0, r20 = 0xd04, [0xd04] = 0x84
r40 = 1, r20 = 0xd04, [0xd04] = 0x84
r50 = 0xd01, [0xd01] = 0x33
The
The
The result of an access by
The
[ IF r guard ] uld8 r src1
if r guard then
r dest
uld8
uld8
uld8
Initial Values
zero_ext8to32(mem[r src1 ])
operation loads the 8-bit memory value from the address contained in r src1 , zero extends it to 32 bits,
uld8
operation optionally takes a guard, specified in r guard . If a guard is present, its LSB controls the
operation is a pseudo operation transformed by the scheduler into an
has no side effects whatever.
uld8
uld8 r10
IF r30 uld8 r20
IF r40 uld8 r20
uld8 r50
to the MMIO address aperture is undefined; access to the MMIO aperture is
r dest
Operation
r60
r90
PRODUCT SPECIFICATION
r70
r80
r60
no change, since guard is false
r80
r90
DSPCPU Operations for TM1300
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
0x00000022
0x00000084
0x00000033
ild8 uld8d ild8d uld8r
uld8d(0)
ATTRIBUTES
SEE ALSO
Result
ild8r
with the same
uld8
dmem
4, 5
No
—
8
1
3
A-191