Xilinx EDK 8.2i manual Op1 if cond else op2

Instructions

Table 1-5:Instruction Set Nomenclature

R

Symbol						Description
<< x	Bit shift left x bits
and	Logic AND
or	Logic OR
xor	Logic exclusive OR
op1 if cond else op2	Perform op1 if condition cond is true, else perform op2
&	Concatenate. E.g. “0000100 & Imm7” is the concatenation of the fixed field “0000100” and
	a 7 bit immediate value.
signed	Operation performed on signed integer data type. All arithmetic operations are performed
	on signed word operands, unless otherwise specified
unsigned	Operation performed on unsigned integer data type
float	Operation performed on floating point data type
Table 1-6:MicroBlaze Instruction Set Summary
Type A		0-5	6-10	11-15	16-20	21-31			Semantics
Type B		0-5	6-10	11-15		16-31
ADD Rd,Ra,Rb		000000	Rd	Ra	Rb	00000000000	Rd := Rb + Ra
RSUB Rd,Ra,Rb		000001	Rd	Ra	Rb	00000000000	Rd := Rb +		+ 1
								Ra
ADDC Rd,Ra,Rb		000010	Rd	Ra	Rb	00000000000	Rd := Rb + Ra + C
RSUBC Rd,Ra,Rb		000011	Rd	Ra	Rb	00000000000	Rd := Rb +		+ C
								Ra
ADDK Rd,Ra,Rb		000100	Rd	Ra	Rb	00000000000	Rd := Rb + Ra
RSUBK Rd,Ra,Rb		000101	Rd	Ra	Rb	00000000000	Rd := Rb +		+ 1
								Ra
ADDKC Rd,Ra,Rb		000110	Rd	Ra	Rb	00000000000	Rd := Rb + Ra + C
RSUBKC Rd,Ra,Rb		000111	Rd	Ra	Rb	00000000000	Rd := Rb +		+ C
								Ra
CMP Rd,Ra,Rb		000101	Rd	Ra	Rb	00000000001	Rd := Rb +		+ 1
								Ra
							Rd[0] := 0 if (Rb >= Ra) else
							Rd[0] := 1
CMPU Rd,Ra,Rb		000101	Rd	Ra	Rb	00000000011	Rd := Rb +		+ 1 (unsigned)
								Ra
							Rd[0] := 0 if (Rb >= Ra, unsigned) else
							Rd[0] := 1
ADDI Rd,Ra,Imm		001000	Rd	Ra		Imm	Rd := s(Imm) + Ra
RSUBI Rd,Ra,Imm		001001	Rd	Ra		Imm	Rd := s(Imm) +				+ 1
										Ra
ADDIC Rd,Ra,Imm		001010	Rd	Ra		Imm	Rd := s(Imm) + Ra + C
RSUBIC Rd,Ra,Imm		001011	Rd	Ra		Imm	Rd := s(Imm) +				+ C
										Ra
ADDIK Rd,Ra,Imm		001100	Rd	Ra		Imm	Rd := s(Imm) + Ra
RSUBIK Rd,Ra,Imm		001101	Rd	Ra		Imm	Rd := s(Imm) +				+ 1
										Ra

MicroBlaze Processor Reference Guide	www.xilinx.com	15
UG081 (v6.0) June 1, 2006	1-800-255-7778