Difference between revisions of "BLT"

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The Branch if Less Than opcode (BLT) is a two-decle opcode that is a part of the [[Branch]] family of opcodes.  This instruction causes the [[CP1610]] to branch if the [[Sign Flag]] is not equal to the [[Overflow Flag]] to the address specified by the following parameters.<br/>
 
The Branch if Less Than opcode (BLT) is a two-decle opcode that is a part of the [[Branch]] family of opcodes.  This instruction causes the [[CP1610]] to branch if the [[Sign Flag]] is not equal to the [[Overflow Flag]] to the address specified by the following parameters.<br/>
  
     Format - Decle #1    Format - Word #2 (Unknown if all 16 bits are significant)
+
     Format - Decle #1    Format - Word #2 (All 16 bits are significant)
 
     0000:0010:00d0:0101  aaaa:aaaa:aaaa:aaaa<br/>
 
     0000:0010:00d0:0101  aaaa:aaaa:aaaa:aaaa<br/>
 
     where:<br/>
 
     where:<br/>

Revision as of 18:47, 12 January 2005

Instruction NameBranch if Less Than
MnemonicsBLT
CP1610 Clock Cycles7 or 9
InterruptibleYes
Opcode Range$0205, $0225

The Branch if Less Than opcode (BLT) is a two-decle opcode that is a part of the Branch family of opcodes. This instruction causes the CP1610 to branch if the Sign Flag is not equal to the Overflow Flag to the address specified by the following parameters.

   Format - Decle #1    Format - Word #2 (All 16 bits are significant)
   0000:0010:00d0:0101  aaaa:aaaa:aaaa:aaaa
where:
d indicates the direction of the branch such that: d == 0 indicates to branch in the forward direction d == 1 indicates to branch in the reverse direction
aaaaaaaaaaaaaaaa indicates the amount of offset

See the Branch opcode family documentation for more information.