PNX1302EH NXP Semiconductors, PNX1302EH Datasheet - Page 303

• Manufacturer Part Number: PNX1302EH
• Manufacturer: NXP Semiconductors

Specifications of PNX1302EH

• Lead Free Status / RoHS Status: Not Compliant

PNX1300/01/02/11 Data Book
allocd
SYNTAX
FUNCTION
DESCRIPTION
sets the status of this cache block as valid. No data is fetched from main memory for this operation. The allocated
cache block data is undefined after this operation. It is the responsibility of the programmer to update the allocated
cache block by store operations.
execution of the allocd operation. If the LSB of rguard is 1, allocd operation is executed; otherwise, it is not executed.
EXAMPLES
A-5
r10 = 0xabcd,
cache_block_size = 0x40
r10 = 0xabcd, r11 = 0,
cache_block_size = 0x40
r10 = 0xabff, r11 = 1,
cache_block_size = 0x40
The allocd operation allocate a cache block with the address computed from
Refer to the ‘cache architecture’ section for details on the cache block size.
The
[ IF rguard ] allocd(d) rsrc1
if rguard then {
}
cache_block_mask = ~(cache_block_size -1)]
allocate adata cache block with [(rsrc1 + d) & cache_block_mask] address
allocd
Initial Values
operation optionally takes a guard, specified in rguard. If a guard is present, its LSB controls the
PRELIMINARY SPECIFICATION
allocd(0x32) r10
IF r11 allocd(0x32) r10
IF r11 allocd(0x4) r10
Operation
Allocate a cache block with displacement
Allocates a cache block for the address space from
0xabc0 to 0x0xabff without fetching the data from
main memory; The data in this address space is
undefined.
since guard is false, allocd operation is not executed
Allocates a cache block for the address space from
0xac00 to 0xac3f without fetching the data from main
memory; the data in this address space is undefined.
[(rsrc1 + d) & cache_block_mask]
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
Philips Semiconductors
Result
allocr allocx
ATTRIBUTES
SEE ALSO
-255..252 by 4
dmemspec
7 bits
213
1
5
-
and