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Text: TT27_b2

[NES version, Bank 7]

Name: TT27_b2 [Show more] Type: Subroutine Category: Text Summary: Call the TT27 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: * cpl calls TT27_b2 * csh calls TT27_b2 * EQSHP calls TT27_b2 * mes9 calls TT27_b2 * MESS calls TT27_b2 * NLIN3 calls TT27_b2 * plf calls TT27_b2 * PrintEquipment calls TT27_b2 * PrintLaserView calls TT27_b2 * PrintSaveHeader calls TT27_b2 * PrintSpaceAndToken calls TT27_b2 * PrintSpacedHyphen calls TT27_b2 * PrintSpaceViewName calls TT27_b2 * PrintTokenAndColon calls TT27_b2 * PrintTokenCrTab calls TT27_b2 * prq calls TT27_b2 * spc calls TT27_b2 * STATUS calls TT27_b2 * TT147 calls TT27_b2 * TT151 calls TT27_b2 * TT162 calls TT27_b2 * TT210 calls TT27_b2 * TT213 calls TT27_b2 * TT25 calls TT27_b2 * TT60 calls TT27_b2 * TT66 calls TT27_b2 * TT67 calls TT27_b2 * TT68 calls TT27_b2 * TT70 calls TT27_b2 * TT73 calls TT27_b2
.TT27_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 ; bank24 BEQ bank24 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 TT27 ; Call TT27, 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 .bank24 LDA storeA ; Restore the value of A that we stored above JMP TT27 ; Call TT27, which is already paged into memory, and ; return from the subroutine using a tail call