tm1300 NXP Semiconductors, tm1300 Datasheet - Page 474

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

TM1300 Data Book
uld16d
SYNTAX
FUNCTION
DESCRIPTION
bits, and writes the result in r dest . The d value is an opcode modifier, must be in the range –128 and 126 inclusive,
and must be a multiple of 2. If the memory address computed by r src1 + d is not a multiple of 2, the result of
is undefined but no exception will be raised. This load operation is performed as little-endian or big-endian depending
on the current setting of the bytesex bit in the PCSW.
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 locations are cacheable. if the LSB of r guard is 0, r dest is not
changed and
EXAMPLES
A-188
r10 = 0xd00, [0xd02] = 0x22,
[0xd03] = 0x11
r30 = 0, r20 = 0xd04, [0xd00] = 0x84,
[0xd01] = 0x33
r40 = 1, r20 = 0xd04, [0xd00] = 0x84,
[0xd01] = 0x33
r50 = 0xd01
The
The result of an access by
The
[ IF r guard ] uld16d( d ) r src1
if r guard then {
}
if PCSW.bytesex = LITTLE_ENDIAN then
else
temp<7:0>
temp<15:8>
r dest
uld16d
uld16d
bs
bs
Initial Values
1
0
zero_ext16to32(temp<15:0>)
uld16d
operation loads the 16-bit memory value from the address computed by r src1 + d , zero extends it to 32
operation optionally takes a guard, specified in r guard . If a guard is present, its LSB controls the
mem[r src1 + d + (1
mem[r src1 + d + (0
has no side effects whatever.
PRODUCT SPECIFICATION
uld16d
bs)]
uld16d(2) r10
IF r30 uld16d(-4) r20
IF r40 uld16d(-4) r20
uld16d(-4) r50
bs)]
to the MMIO address aperture is undefined; access to the MMIO aperture is
r dest
Operation
Unsigned 16-bit load with displacement
r60
r90
r70
r80
r60
no change, since guard is false
r80
r90 undefined (0xd01 +(–4) is not a multiple
of 2)
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
uld16 ild16 ild16d uld16r
0x00002211
0x00008433
ild16r uld16x ild16x
Philips Semiconductors
ATTRIBUTES
SEE ALSO
Result
–128..126 by 2
dmem
7 bits
197
4, 5
uld16d
1
3