tm1300 NXP Semiconductors, tm1300 Datasheet - Page 387

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

Philips Semiconductors
Interruptible jump immediate
SYNTAX
FUNCTION
DESCRIPTION
interrupts or exceptions are pending, the DPC, PC, and SPC registers are set equal to address . If an exception or
interrupts is pending, DPC is set equal to address and a service routine is invoked, where exceptions have priorities
over interrupts. address is an immediate opcode modifier.
the jump. If the LSB of r guard is 1, the instruction executes as previously described; otherwise, the jump will not be
taken and PC, DPC, and SPC are not modified.
EXAMPLES
r30 = 0
r40 = 1
The
The
[ IF r guard ] ijmpi (address )
if r guard then {
}
DPC
if exception is pending then
else if interrupt is pending then
else
ijmpi
ijmpi
service exception
service interrupts
PC, SPC
address
Initial Values
operation optionally takes a guard, specified in r guard . If a guard is present, its LSB adds a condition to
operation changes the program flow and allows pending interrupts or exceptions to be serviced. If no
address
ijmpi(0x330)
IF r30 ijmpi(0x8000)
IF r40 ijmpi(0x8000)
Operation
PRODUCT SPECIFICATION
program execution continues at 0x330
since guard is false, program execution con-
tinues with next sequential instruction
program execution continues at 0x8000
DSPCPU Operations for TM1300
jmpf jmpt jmpi ijmpf ijmpt
Function unit
Operation code
Number of operands
Modifier
Modifier range
Delay
Issue slots
ATTRIBUTES
SEE ALSO
Result
ijmpi
0..0xffffffff
branch
32 bits
2, 3, 4
179
0
3
A-101