nios ii psedo-instruction and equivalent instruction

[Altera_Forum]

Hello，everyone. 

I'm am learning nios ii instruction set. Can anybody explain psedo-instruction and equivalent instruction,  for example( from Altera Nios ii processor reference handbook): psedo-instruction equivalent instruction  bgt rA, rB, label blt rB, rA, label     bgt (psedo-instruction) Operation: if ((signed) rA > (signed) rB) then PC &#8592;label else PC &#8592;PC + 4 Assembler Syntax: bgt rA, rB, label  blt (equivalent instruction) Operation: if ((signed) rA < (signed) rB) then PC &#8592;PC + 4 + &#963; (IMM16) else PC &#8592;PC + 4 Assembler Syntax: blt rA, rB, label  bgt(psedo-instruction) and blt(equivalent instruction) are equivalent ? When they are else statements, they are equivalent. But, i think if conditons are met, they are not equivalent : bgt : PC &#8592;label, however ,blt: PC &#8592;PC + 4 + &#963; (IMM16) Can someone explain it ?  Best regards  hanshaohua

[Altera_Forum]

--- Quote Start ---   bgt (psedo-instruction)  Operation: if ((signed) rA > (signed) rB)  then PC &#8592;label  else PC &#8592;PC + 4  Assembler Syntax: bgt rA, rB, label    blt (equivalent instruction)  Operation: if ((signed) rA < (signed) rB)  then PC &#8592;PC + 4 + &#963; (IMM16)  else PC &#8592;PC + 4  Assembler Syntax: blt rA, rB, label    --- Quote End ---  This is wrong whether in the original form or by transcription in this post. They are not equivalent, but this is not correct since it should be:  rA > rB and rB < rA  I see reference elsewhere to:  bgt rA, rB, label    is the same as   blt rB, rA, label   which is of course correct.  Bill

[Altera_Forum]

Hi,bill. 

Can you explain it more clear ? I can't catch what you mean.  :)

[Altera_Forum]

The pseudo-opcode 

 bgt rA, rB, label   is the same as  blt rB, rA, label   because rA < rB is the same as rB > rA  You mention conditions where they are not equal which is true for what was in your original post, however your original post isn't correct.  Bill

[Altera_Forum]

--- Quote Start ---  The pseudo-opcode  bgt rA, rB, label   is the same as  blt rB, rA, label   because rA < rB is the same as rB > rA  You mention conditions where they are not equal which is true for what was in your original post, however your original post isn't correct.  Bill  --- Quote End ---    Yes, thank you!