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DSP96002 USER’S MANUAL
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FJScc
Floating-Point Jump To Subroutine
Conditionally
FJScc
Operation:
If cc, then PC
→
SSH; SR
→
SSL; xx
→
PC
else PC+1
→
PC
If cc, then PC
→
SSH; SR
→
SSL; ea
→
PC
else PC+1
→
PC
Assembler Syntax:
FJScc label (short)
Description:
If the specified floating-point condition is true, the address of the instruction immediately following the
FJScc instruction and the status register are pushed onto the stack. Program execution then continues at
the effective address in program memory. If the specified condition is false, the PC is incremented and
any extension word is ignored. However, the address register specified in the effective address field is
always updated independently of the condition. All memory alterable addressing modes may be used for
the effective address. A fast Short Jump addressing mode may also be used. The 15-bit data is sign ex-
tended to form the effective address. See
Section A.10
for restrictions. Non-aware floating-point condi-
tions set the SIOP flag in the IER and the UNCC bit in the ER if the NAN bit is set. This action occurs before
stacking the status register when the specified non-aware floating-point condition is true.
"cc" may specify the following conditions:
Non-aware
Set UNCC*
No
Mnemonic
EQ
ERR
Condition
Z = 1
UNCC v SNAN v OPERR v No
OVF v UNF v DZ = 1
NAN v (N & ~Z) = 0
NAN v Z = 0
NAN = 0
NAN v Z v N = 0
I = 1
NAN v ~(N v Z) = 0
NAN v Z v ~N = 0
N = 1
Z = 0
NAN v (N & ~Z) = 1
NAN v Z = 1
NAN = 1
NAN v Z v N = 1
I = 0
NAN v ~(N v Z) = 1
NAN v Z v ~N = 1
NAN = 0
N = 0
NAN = 1
- equal
- error
GE
GL
GLE
GT
INF
LE
LT
MI
NE(Q)- not equal
NGE - not(greater than or equal)
NGL
- not(greater or less than)
NGLE - not(greater, less or equal)
NGT
- not greater than
NINF - not infinity
NLE
- not(less than or equal)
NLT
- not less than
OR
- ordered
PL
- plus
UN
- unordered
Note: The operands for the ERR condition are taken from the ER register.
* See the description of the UNcc bit in
Section A.4
.
CCR Condition Codes:
Not affected.
- greater than or equal
- greater or less than
- greater, less or equal
- greater than
- infinity
- less than or equal
- less than
- minus
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
F
Freescale Semiconductor, Inc.
n
.