dsp56800e Freescale Semiconductor, Inc, dsp56800e Datasheet - Page 483

• Manufacturer Part Number: dsp56800e
• Description: 16-bit Digital Signal Controller Core
• Manufacturer: Freescale Semiconductor, Inc

FRTID
Operation:
Swap shadow registers, then
return from fast interrupt service routine
Description: Refer to Section 9.3.2.2, “Fast Interrupt Processing,” on page 9-6.
Condition Codes Affected:
Restrictions:
Instruction Fields:
Instruction Opcodes:
Timing:
Memory:
Freescale Semiconductor
FRTID
Operation
FRTID
All bits are set according to the value removed from the stack
Refer to Section 4.3.2, “Delayed Instruction Restrictions,” on page 4-14.
2 oscillator clock cycles
1 program word
LF
15
Operands
P4
14
13
P3
Delayed Return from Fast Interrupt
P2
12
MR
P1
11
C
2
15
P0
1
10
Instruction Set Details
W
1
1
I1
9
Delayed return from interrupt, restoring 21-bit PC and SR from
the stack; must fill 2 word slots
1
Assembler Syntax:
FRTID
I0
8
12
0
SZ
7
11
0
6
L
1
5
E
1
U
4
CCR
1
8
Comments
N
3
7
0
0
2
Z
0
V
1
1
4
C
0
1
3
FRTID
0
1
A-139
0
0