Motorola DSP96002 User Manual page 847

PLOCK
Operation:
Lock sector by ea
Description:
Lock the cache sector to which the specified effective address belongs. If the specified effective address
does not belong to any cache sector, then load the least recently used cache sector tag with the 25 most
significant bits of the specified address and then lock that cache sector. Update the LRU stack accordingly.
All memory alterable addressing modes may be used for the effective address, but not a short absolute
address.
The PLOCK instruction is enabled only in Cache Mode. In PRAM Mode it will cause an illegal instruction
trap to be taken.
CCR Condition Codes: Not affected.
ER Status Bits: Not affected.
IER Flags: Not affected.
Instruction Format: PLOCK
31
0000 0011
Instruction Fields:
ea Rn - R0-R7 (Memory alterable addressing modes only)
Absolute Address - 32 bits
Timing: 4 + ea oscillator clock cycles
Memory: 1 + ea program words
MOTOROLA
Program-Cache-Sector Lock
ea
0000 MMMR
OPTIONAL EFFECTIVE ADDRESS EXTENSION
Assembler Syntax:
PLOCK ea
14 13
RR 00 0000
PLOCK
0
1000 0000
65