MC68040RC40V Freescale Semiconductor, MC68040RC40V Datasheet - Page 236
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MC68040RC40V
Manufacturer Part Number
MC68040RC40V
Description
IC MICROPROCESSOR 32BIT 179-PGA
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68EC040FE33A.pdf
(442 pages)
Specifications of MC68040RC40V
Processor Type
M680x0 32-Bit
Speed
40MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
179-PGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
- Current page: 236 of 442
- Download datasheet (4Mb)
8.4.4 Floating-Point Post-Instruction Stack Frame (Format $3)
The processor restores the SR and PC values from the stack and increments the active
supervisor stack pointer by $C. If another floating-point post-instruction exception is
pending, exception processing begins immediately for the new exception; otherwise, the
processor resumes normal instruction execution.
8.4.5 Eight-Word Stack Frame (Format $4)
The MC68040V, MC68LC040, MC68EC040, and MC68EC040V use this stack frame for
unimplemented floating-point instructions. The MC68040 does not generate or recognize
this format stack frame. Refer to Appendix A MC68LC040 and Appendix B MC68EC040
for further details about this stack frame.
MOTOROLA
SP
+$02
+$06
+$08
15
0 0 1 1
FLOATING-POINT POST-INSTRUCTION
STACK FRAME–FORMAT $3
Stack Frames
PROGRAM COUNTER
EFFECTIVE ADDRESS
STATUS REGISTER
VECTOR OFFSET
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
M68040 USER’S MANUAL
0
• Floating-Point Post-
Instruction
Exception Types
• Next Instruction: <ea> is the
calculated effective address
for the floating-point
instruction.
Stacked PC Points To
8- 23
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