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PPU: SendBitplaneToPPU_b3

[NES version, Bank 7]

Name: SendBitplaneToPPU_b3 [Show more] Type: Subroutine Category: PPU Summary: Call the SendBitplaneToPPU routine in ROM bank 3 Deep dive: Splitting NES Elite across multiple ROM banks
Context: See this subroutine in context in the source code References: No direct references to this subroutine in this source file
.SendBitplaneToPPU_b3 LDA currentBank ; If ROM bank 3 is already paged into memory, jump to CMP #3 ; bank19 BEQ bank19 PHA ; Otherwise store the current bank number on the stack LDA #3 ; Page ROM bank 3 into memory at $8000 JSR SetBank JSR SendBitplaneToPPU ; Call SendBitplaneToPPU, 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 .bank19 JMP SendBitplaneToPPU ; Call SendBitplaneToPPU, which is already paged into ; memory, and return from the subroutine using a tail ; call