18 www.xilinx.com MicroBlaze Processor Reference Guide
1-800-255-7778 UG081 (v6.0) June 1, 2006
Chapter 1: MicroBlaze Architecture
R
MTS Sd,Ra 100101 00000 Ra 11 & Sd SPR[Sd] := Ra, where:
SPR[0x0001] is MSR
SPR[0x0007] is FSR
MFS Rd,Sa 100101 Rd 00000 10 & Sa Rd := SPR[Sa], where:
SPR[0x0000] is PC
SPR[0x0001] is MSR
SPR[0x0003] is EAR
SPR[0x0005] is ESR
SPR[0x0007] is FSR
SPR[0x000B] is BTR
SPR[0x2000:0x200B] is PVR[0] to
PVR[11]
MSRCLR Rd,Imm 100101 Rd 00001 00 & Imm14 Rd := MSR
MSR := MSR and
Imm14
MSRSET Rd,Imm 100101 Rd 00000 00 & Imm14 Rd := MSR
MSR := MSR or Imm14
BR Rb 100110 00000 00000 Rb 00000000000 PC := PC + Rb
BRD Rb 100110 00000 10000 Rb 00000000000 PC := PC + Rb
BRLD Rd,Rb 100110 Rd 10100 Rb 00000000000 PC := PC + Rb
Rd := PC
BRA Rb 100110 00000 01000 Rb 00000000000 PC := Rb
BRAD Rb 100110 00000 11000 Rb 00000000000 PC := Rb
BRALD Rd,Rb 100110 Rd 11100 Rb 00000000000 PC := Rb
Rd := PC
BRK Rd,Rb 100110 Rd 01100 Rb 00000000000 PC := Rb
Rd := PC
MSR[BIP] := 1
BEQ Ra,Rb 100111 00000 Ra Rb 00000000000 PC := PC + Rb if Ra = 0
BNE Ra,Rb 100111 00001 Ra Rb 00000000000 PC := PC + Rb if Ra != 0
BLT Ra,Rb 100111 00010 Ra Rb 00000000000 PC := PC + Rb if Ra < 0
BLE Ra,Rb 100111 00011 Ra Rb 00000000000 PC := PC + Rb if Ra <= 0
BGT Ra,Rb 100111 00100 Ra Rb 00000000000 PC := PC + Rb if Ra > 0
BGE Ra,Rb 100111 00101 Ra Rb 00000000000 PC := PC + Rb if Ra >= 0
BEQD Ra,Rb 100111 10000 Ra Rb 00000000000 PC := PC + Rb if Ra = 0
BNED Ra,Rb 100111 10001 Ra Rb 00000000000 PC := PC + Rb if Ra != 0
BLTD Ra,Rb 100111 10010 Ra Rb 00000000000 PC := PC + Rb if Ra < 0
BLED Ra,Rb 100111 10011 Ra Rb 00000000000 PC := PC + Rb if Ra <= 0
Table 1-6: MicroBlaze Instruction Set Summary (Continued)
Type A 0-5 6-10 11-15 16-20 21-31
Semantics
Type B 0-5 6-10 11-15 16-31