MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 139

• Manufacturer Part Number: MPC555CME
• Description: KIT EVALUATION FOR MPC555
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC555CME

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC555
• Data Bus Width: 32 bit
• Interface Type: RS-232
• For Use With/related Products: MPC555
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

XER — Integer Exception Register
MSB
3.7.4.3 Condition Register CRn Field — Compare Instruction
3.7.5 Integer Exception Register (XER)
MPC555
USER’S MANUAL
U
0
CRn Bit
CR1 Bit
SO
NOTES:
1. Here, the bit indicates the bit number in any one of the four-bit subfields, CR0–CR7
0
1
2
3
When a specified CR field is set by a compare instruction, the bits of the specified field
are interpreted as shown in
by the mfcr, mcrf, and mtcrf instructions.
The integer exception register (XER) is a user-level, 32-bit register.
0
1
2
3
U
1
U
2
1
OV
/
Floating-point exception (FX) — This is a copy of the final state of FPSCR[FX] at the completion of the in-
struction.
Floating-point enabled exception (FEX) — This is a copy of the final state of FPSCR[FEX] at the completion
of the instruction.
Floating-point invalid exception (VX) — This is a copy of the final state of FPSCR[VX] at the completion of
the instruction.
Floating-point overflow exception (OX) — This is a copy of the final state of FPSCR[OX] at the completion
of the instruction.
U
Less than, floating-point less than (LT, FL).
For integer compare instructions, (rA) < SIMM, UIMM, or (rB) (algebraic comparison) or (rA) SIMM, UIMM,
or (rB) (logical comparison).
For floating-point compare instructions, (frA) < (frB).
Greater than, floating-point greater than (GT, FG).
For integer compare instructions, (rA) > SIMM, UIMM, or (rB) (algebraic comparison) or (rA) SIMM, UIMM,
or (rB) (logical comparison).
For floating-point compare instructions, (frA) > (frB).
Equal, floating-point equal (EQ, FE).
For integer compare instructions, (rA) = SIMM, UIMM, or (rB).
For floating-point compare instructions, (frA) = (frB).
Summary overflow, floating-point unordered (SO, FU).
For integer compare instructions, this is a copy of the final state of XER[SO] at the completion of the in-
struction.
For floating-point compare instructions, one or both of (frA) and (frB) is not a number (NaN).
3
MPC556
Table 3-9 CRn Field Bit Descriptions for Compare Instructions
U
4
CA
U
5
6
0
Table 3-8 Bit Descriptions for CR1 Field of CR
7
0
8
0
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
0
0
CENTRAL PROCESSING UNIT
Table
0
0
Rev. 15 October 2000
0
3-9. A condition register field can also be accessed
Reserved
0
RESET:
0
Description
Description
0
0
0
0
0
0
0
0
0
U
U
U
BYTES
MOTOROLA
U
SPR 1
U
U
3-17
LSB
31
U