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⌂ ∞ Elite on the BBC Micro and NES

Drawing the screen: VEC

[Elite-A, Missile ship blueprint]

       Name: VEC                                                     [Show more]
       Type: Variable
   Category: Drawing the screen
    Summary: The original value of the IRQ1 vector

    Context: See this variable in context in the source code
 References: No direct references to this variable in this source file




.VEC

                        \ --- Mod: Code removed for Elite-A: ------------------>

\IF _STH_DISC OR _IB_DISC
\
\ EQUW &0004            \ VEC = &7FFE
\                       \
\                       \ This gets set to the value of the original IRQ1 vector
\                       \ by the loading process
\                       \
\                       \ This default value is random workspace noise left over
\                       \ from the BBC Micro assembly process; it gets
\                       \ overwritten
\
\ELIF _SRAM_DISC
\
\ SKIP 2                \ VEC = &7FFE
\                       \
\                       \ This gets set to the value of the original IRQ1 vector
\                       \ by the loading process
\
\ENDIF

                        \ --- And replaced by: -------------------------------->

 SKIP 2                 \ VEC = &7FFE
                        \
                        \ This gets set to the value of the original IRQ1 vector
                        \ by the loading process

                        \ --- End of replacement ------------------------------>