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Start and end: ResetToStartScreen

[NES version, Bank 7]

Name: ResetToStartScreen [Show more] Type: Subroutine Category: Start and end Summary: Reset the stack and the game's variables and show the Start screen
Context: See this subroutine in context in the source code References: This subroutine is called as follows: * DrawTitleScreen calls ResetToStartScreen
.ResetToStartScreen LDX #$FF ; Set the stack pointer to $01FF, which is the standard TXS ; location for the 6502 stack, so this instruction ; effectively resets the stack JSR ResetVariables ; Reset all the RAM (in both the NES and cartridge), as ; it is in an undefined state when the NES is switched ; on, initialise all the game's variables, and switch to ; ROM bank 0 JMP ShowStartScreen ; Jump to ShowStartScreen in bank 0 to show the start ; screen and start the game