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Drawing suns: SUN_b1

[NES version, Bank 7]

Name: SUN_b1 [Show more] Type: Subroutine Category: Drawing suns Summary: Call the SUN routine in ROM bank 1 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
.SUN_b1 LDA currentBank ; If ROM bank 1 is already paged into memory, jump to CMP #1 ; bank7 BEQ bank7 PHA ; Otherwise store the current bank number on the stack LDA #1 ; Page ROM bank 1 into memory at $8000 JSR SetBank JSR SUN ; Call SUN, 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 .bank7 JMP SUN ; Call SUN, which is already paged into memory, and ; return from the subroutine using a tail call