PNX1311EH NXP Semiconductors, PNX1311EH Datasheet - Page 315

• Manufacturer Part Number: PNX1311EH
• Manufacturer: NXP Semiconductors

Specifications of PNX1311EH

• Lead Free Status / RoHS Status: Not Compliant

PNX1300/01/02/11 Data Book
borrow
SYNTAX
FUNCTION
DESCRIPTION
(Note: pseudo operations cannot be used in assembly source files.)
difference generates a borrow (if rsrc2 > rsrc1), 1 is stored in the destination register, rdest; otherwise, rdest is set to
0.
modification of the destination register. If the LSB of rguard is 1, rdest is written; otherwise, rdest is not changed.
EXAMPLES
A-17
r70 = 2, r30 = 0xfffffffc
r10 = 0, r70 = 2, r30 = 0xfffffffc
r20 = 1, r70 = 2, r30 = 0xfffffffc
r60 = 4, r30 = 0xfffffffc
r30 = 0xfffffffc
The
The
The
[ IF rguard ] borrow rsrc1 rsrc2 → rdest
if rguard then {
}
if rsrc1 < rsrc2 then
else
borrow
borrow
borrow
rdest ← 1
rdest ← 0
Initial Values
operation is a pseudo operation transformed by the scheduler into an
operation computes the unsigned difference of the first and second arguments, rsrc1–rsrc2. If the
operation optionally takes a guard, specified in rguard. If a guard is present, its LSB controls the
PRELIMINARY SPECIFICATION
borrow r70 r30 → r80
IF r10 borrow r70 r30 → r90
IF r20 borrow r70 r30 → r100
borrow r60 r30 → r110
borrow r30 r30 → r120
Compute borrow bit from unsigned subtract
Operation
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
r80 ← 1
no change, since guard is false
r100 ← 1
r110 ← 1
r120 ← 0
ugtr
Philips Semiconductors
with reversed arguments.
ATTRIBUTES
ugtr carry
SEE ALSO
pseudo-op for ugtr
Result
1, 2, 3, 4, 5
alu
No
33
—
2
1