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JSR: Difference between revisions

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(no flags affected)
(added syntax)
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No flags are affected.
No flags are affected.
==== Syntax ====
<pre>
JSR addr
JSR (addr, X)
JSR long
</pre>


==== Execution Sequence ====
==== Execution Sequence ====

Revision as of 22:35, 6 July 2024

Basic Info
Addressing Mode Opcode Length Speed
Absolute 20 3 bytes 6 cycles
Absolute Indexed Indirect FC 3 bytes 8 cycles
Absolute Long 22 4 bytes 8 cycles
Flags Affected
N V M X D I Z C
. . . . . . . .

JSR (Jump to Subroutine) is a 65x instruction that transfers control to a subroutine.

No flags are affected.

Syntax

JSR addr
JSR (addr, X)
JSR long

Execution Sequence

  • The return address is pushed onto the stack
  • Control is transferred to the target location

See Also

External Links

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