tm1300 NXP Semiconductors, tm1300 Datasheet - Page 491

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

Philips Semiconductors
Write destination program counter
SYNTAX
FUNCTION
DESCRIPTION
hardware update (during an interruptible jump) and a software update (through a
update takes precedence.
handling routine as a jump address to resume execution of the program that was running before the exception was
taken.
modification of DPC. If the LSB of r guard is 1, DPC is written; otherwise, DPC is unchanged.
EXAMPLES
r30 = 0xbeebee
r20 = 0, r31 = 0xabba
r21 = 1, r31 = 0xabba
The
Interruptible jumps write their target address to the DPC. The value of DPC is intended to be used by an exception-
The
[ IF r guard ] writedpc r src1
if r guard then {
}
DPC
writedpc
writedpc
Initial Values
r src1
copies the value of r src1 to the DPC (Destination Program Counter) processor register. Whenever a
operation optionally takes a guard, specified in r guard . If a guard is present, its LSB controls the
writedpc r30
IF r20 writedpc r31
IF r21 writedpc r31
Operation
PRODUCT SPECIFICATION
DPC
no change, since guard is false
DPC
0xbeebee
0xabba
DSPCPU Operations for TM1300
writedpc
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
readdpc writespc ijmpf
Result
ijmpi ijmpt
ATTRIBUTES
SEE ALSO
) coincide, the software
writedpc
fcomp
160
No
—
1
1
3
A-205