BMI

From Intellivision Wiki
Revision as of 07:57, 4 December 2010 by Mr z (talk | contribs) (Protected "BMI" ([edit=autoconfirmed] (indefinite) [move=autoconfirmed] (indefinite)))
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
Instruction NameBranch on Minus
MnemonicsBMI
CP1610 Clock Cycles7 or 9
InterruptibleYes
Opcode Range$020B, $022B

The Branch on Minus opcode (BMI) 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 set to the address specified by the following parameters.

   Format - Decle #1    Format - Word #2 (All 16 bits are significant)
   0000:0010:00d0:1011  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.

Retrieved from "http://wiki.intellivision.us/index.php?title=BMI&oldid=14746"