Difference between revisions of "B"

From Intellivision Wiki
Jump to: navigation, search
 
Line 3: Line 3:
 
<tr><td>Instruction Name</td><td>Unconditional Branch</td></tr>
 
<tr><td>Instruction Name</td><td>Unconditional Branch</td></tr>
 
<tr><td>Mnemonics</td><td>B</td></tr>
 
<tr><td>Mnemonics</td><td>B</td></tr>
<tr><td>CP1610 Clock Cycles</td><td>7 or 9</td></tr>
+
<tr><td>CP1610 Clock Cycles</td><td>9</td></tr>
 
<tr><td>Interruptible</td><td>Yes</td></tr>
 
<tr><td>Interruptible</td><td>Yes</td></tr>
 
<tr><td>Opcode Range</td><td>$0200, $0220</td></tr>
 
<tr><td>Opcode Range</td><td>$0200, $0220</td></tr>

Revision as of 17:29, 12 January 2005

Instruction NameUnconditional Branch
MnemonicsB
CP1610 Clock Cycles9
InterruptibleYes
Opcode Range$0200, $0220

The Unconditional Branch opcode (B) is a two-decle opcode that is a part of the Branch family of opcodes. The Unconditional Branch causes the CP1610 to always branch to the address specified by the following parameters.

   Format - Decle #1    Format - Word #2 (Unknown if all 16 bits are significant)
   0000:0010:00d0:0000  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.