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Text: DTS_b2

[NES version, Bank 7]

Name: DTS_b2 [Show more] Type: Subroutine Category: Text Summary: Call the DTS routine in ROM bank 2 Deep dive: Splitting NES Elite across multiple ROM banks
Context: See this subroutine in context in the source code References: This subroutine is called as follows: * MT18 calls DTS_b2
.DTS_b2 STA storeA ; Store the value of A so we can retrieve it below LDA currentBank ; If ROM bank 2 is already paged into memory, jump to CMP #2 ; bank15 BEQ bank15 PHA ; Otherwise store the current bank number on the stack LDA #2 ; Page ROM bank 2 into memory at $8000 JSR SetBank LDA storeA ; Restore the value of A that we stored above JSR DTS ; Call DTS, now that it is paged into memory JMP ResetBank ; Fetch the previous ROM bank number from the stack and ; page that bank back into memory at $8000, returning ; from the subroutine using a tail call .bank15 LDA storeA ; Restore the value of A that we stored above JMP DTS ; Call DTS, which is already paged into memory, and ; return from the subroutine using a tail call