MicroBlaze Processor Reference Guide 243
UG984 (v2018.2) June 21, 2018 www.xilinx.com
Chapter 5: MicroBlaze Instruction Set Architecture
Registers Altered
• rD, unless an exception is generated, in which case the register is unchanged
• MSR[UM], MSR[VM], MSR[UMS], MSR[VMS], if an exception is generated
• ESR[EC], ESR[S], if an exception is generated
• ESR[DIZ], if a data storage exception is generated
Latency
• 1 cycle with C_AREA_OPTIMIZED=0 or 2
• 2 cycles with
C_AREA_OPTIMIZED=1
Notes
The byte reversed instruction is only valid if MicroBlaze is configured to use reorder instructions
(C_USE_REORDER_INSTR = 1).
The extended address instruction is only valid if MicroBlaze is configured to use extended address
(C_ADDR_SIZE > 32).
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