The boot_in (Parasite) subroutine

       Name: boot_in                                                 [Show more]
       Type: Subroutine
   Category: Loader
    Summary: The entry point for the game
    Context: See this subroutine in context in the source code
 References: No direct references to this subroutine in this source file


 This routine is at the execution address for the parasite code (&2E93), so
 it is called when the parasite code in file 2.T is loaded and run.


.boot_in

IF _BUG_FIX

 LDA #&9C               \ Send command &9C to the I/O processor:
 JSR tube_write         \
                        \   savews()
                        \
                        \ which will switch the MOS character definitions into
                        \ &C000 so we can print properly

ENDIF

 LDA #0                 \ Set save_lock to 0 to indicate there are no unsaved
 STA save_lock          \ changes in the commander file

 STA SSPR               \ Set the "space station present" flag to 0, as we are
                        \ no longer in the space station's safe zone

 STA ECMA               \ Set ECMA to 0 to indicate that no E.C.M. is currently
                        \ running

 STA dockedp            \ Set dockedp to 0 to indicate that we are docked

 JMP BEGIN              \ Jump to BEGIN to initialise the configuration
                        \ variables and start the game

[X]

Subroutine BEGIN (category: Loader)

Initialise the configuration variables and start the game

[X]

Variable ECMA in workspace ZP

The E.C.M. countdown timer, which determines whether an E.C.M. system is currently operating

[X]

Variable SSPR in workspace UP

"Space station present" flag

[X]

Variable dockedp in workspace ZP

A flag that determines whether or not we are docked

[X]

Configuration variable save_lock = &0233

This flag indicates whether we should be asking for confirmation before saving or loading a commander file

[X]

Subroutine tube_write (category: Tube)

As the parasite, send a byte across the Tube to the I/O processor

Loader: boot_in

[Elite-A, Parasite]