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Drawing the screen: DrawScreenInNMI_b0

[NES version, Bank 7]

Name: DrawScreenInNMI_b0 [Show more] Type: Subroutine Category: Drawing the screen Summary: Call the DrawScreenInNMI routine in ROM bank 0 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: * PAUSE calls DrawScreenInNMI_b0 * PAUSE2 calls DrawScreenInNMI_b0 * UpdateSaveScreen calls DrawScreenInNMI_b0
.DrawScreenInNMI_b0 LDA currentBank ; Fetch the number of the ROM bank that is currently PHA ; paged into memory at $8000 and store it on the stack LDA #0 ; Page ROM bank 0 into memory at $8000 JSR SetBank JSR DrawScreenInNMI ; Call DrawScreenInNMI, 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