tm1300 NXP Semiconductors, tm1300 Datasheet - Page 391

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

Philips Semiconductors
Signed 16-bit load with index
SYNTAX
FUNCTION
DESCRIPTION
32 bits, and stores the result in r dest . If the memory address computed by r src1 + r src2 is not a multiple of 2, the result
of
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
r10 = 0xd00, r20 = 2, [0xd02] = 0x22,
[0xd03] = 0x11
r50 = 0, r40 = 0xd04, r30 = 0xfffffffc,
[0xd00] = 0x84, [0xd01] = 0x33
r60 = 1, r40 = 0xd04, r30 = 0xfffffffc,
[0xd00] = 0x84, [0xd01] = 0x33
r70 = 0xd01, r30 = 0xfffffffc
The
The result of an access by
The
[ IF r guard ] ild16r r src1 r src2
if r guard then {
}
ild16r
if PCSW.bytesex = LITTLE_ENDIAN then
else
temp<7:0>
temp<15:8>
r dest
ild16r
ild16r
bs
bs
1
0
Initial Values
sign_ext16to32(temp<15:0>)
is undefined but no exception will be raised. This load operation is performed as little-endian or big-endian
ild16r
operation loads the 16-bit memory value from the address computed by r src1 + r src2 , sign extends it to
operation optionally takes a guard, specified in r guard . If a guard is present, its LSB controls the
mem[(r src1 + r src2 +(1
mem[(r src1 + r src2 + (0
has no side effects whatever.
ild16r
ild16r r10 r20
IF r50 ild16r r40 r30
IF r60 ild16r r40 r30
ild16r r70 r30
to the MMIO address aperture is undefined; access to the MMIO aperture is
bs)]
bs)]
Operation
r dest
r80
r110
PRODUCT SPECIFICATION
r90
r100
r80
no change, since guard is false
r100
r110 undefined, since 0xd01 +(–4) is not a
multiple of 2
DSPCPU Operations for TM1300
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
ild16 uld16 ild16d uld16d
0x00002211
0xffff8433
uld16r ild16x uld16x
ATTRIBUTES
SEE ALSO
Result
ild16r
dmem
195
4, 5
No
—
2
3
A-105