Save and load: DOSVN (6502SP version)

       Name: DOSVN                                             [View in context]
       Type: Subroutine
   Category: Save and load
    Summary: Implement the #DOSVN <flag> command (update the "save in progress"
             flag)


 This routine is run when the parasite sends a #DOSVN <flag> command. It
 updates the "save in progress" flag in svn

 Arguments:

   A                    The new value of the "save in progress" flag


.DOSVN

 STA svn                \ Store the new "save in progress" flag in svn

 JMP PUTBACK            \ Jump to PUTBACK to restore the USOSWRCH handler and
                        \ return from the subroutine using a tail call