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Elite on the BBC Micro

Loader: set_vectors [Elite-A, Loader]

Name: set_vectors [Show more] Type: Subroutine Category: Loader Summary: Set the FILEV, FSCV and BYTEV vectors to point to our custom handlers
Context: See this subroutine in context in the source code References: This subroutine is called as follows: * Elite loader (Part 1 of 3) calls set_vectors
\ --- Mod: Whole section added for Elite-A: -----------> .set_vectors SEI \ Disable interrupts while we update the vectors PHA \ Store A on the stack so we can retrieve it below LDA #LO(do_FILEV) \ Set the FILEV to point to our custom handler in STA FILEV \ do_FILEV LDA #HI(do_FILEV) STA FILEV+1 LDA #LO(do_FSCV) \ Set the FSCV to point to our custom handler in STA FSCV \ do_FSCV LDA #HI(do_FSCV) STA FSCV+1 LDA #LO(do_BYTEV) \ Set the BYTEV to point to our custom handler in STA BYTEV \ do_BYTEV LDA #HI(do_BYTEV) STA BYTEV+1 PLA \ Restore A from the stack, so the subroutine doesn't \ change its value CLI \ Enable interrupts again RTS \ Return from the subroutine \ --- End of added section ---------------------------->