Skip to navigation

⌂ ∞ ▽ Elite on the 6502

Utility routines: OSB

[Elite-A, Loader]

       Name: OSB                                                     [Show more]
       Type: Subroutine
   Category: Utility routines
    Summary: A convenience routine for calling OSBYTE with Y = 0

    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * Elite loader (Part 1 of 3) calls OSB




.OSB

 LDY #0                 \ Call OSBYTE with Y = 0, returning from the subroutine
 JMP OSBYTE             \ using a tail call (so we can call OSB to call OSBYTE
                        \ for when we know we want Y set to 0)