Originally posted by MathOnNapkins

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But I do have a comment, which I am not sure was raised earlier about breakpoints. Once I have set one breakpoint, and then disarm it, or edit it to another breakpoint, the code where it occurs does not show up for the second breakpoint, unless I first clear the screen. Small, but indeed a hassle.

For example I was looking at writes to $0E10. Once I was done I wanted to look at writes to $0E30. The debugger properly stopped execution at those writes, as I could tell from the hex editor, but the updates in the main text portion of the debugger failed to show me the information on the location of the code that caused the breakpoint. That is, until I hit 'clear text'.

edit: I have not been able to replicate this, but it occurred nonetheless. :\ irritating.

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; This code allows for a wall-jump in Metroid (NES)
; Copyright 2002-2005 Parasyte
; http://parasyte.panicus.org/
;
; The above copyright notice may not be removed or changed.
;
;
; Notes:
; Simply overwrite the data at file address 0x01CAD4 (48 bytes, max)
; with this code. Then set the hook by patching 0x01CC34 to 0xC4,0xCA


.org $CAC4		;assemble our code to run at this (CPU) address
.mem 8			;setup accumulator and index regs for NES code
.index 8


;--constants
BtnRight	= $01		;Joypad button definitions.
BtnLeft		= $02
BtnDown		= $04
BtnUp		= $08
BtnStart	= $10
BtnSelect	= $20
BtnB		= $40
BtnA		= $80

ItemBombs	= $01		;Item definitions
ItemHighJump	= $02
ItemLongBeam	= $04
ItemScrewAttack	= $08
ItemMaruMari	= $10
ItemVaria	= $20
ItemWaveBeam	= $40
ItemIceBeam	= $80


;--pointers
JoypadDown	= $12
Joypad		= $14

JumpSpeed	= $0308

ItemFlags	= $6878		;Items Samus has collected

DoJump		= $CD40		;Makes Samus Jump

WallToLeft	= $E880		;Checks for a wall to the left of Samus, returns result in C flag: Set = no, Clear = yes.
WallToRight	= $E88B		;Checks for a wall to the right of Samus, returns result in C flag: Set = no, Clear = yes.




;--Entry Point
; Inputs:	None
; Outputs:	None
; Description:	Checks if Samus is able to wall jump, performs action if possible.

	lda ItemFlags		;Does Samus have High Jump Boots?
	bit #ItemHighJump
	beq exit		;No? Exit!

	lda JoypadDown		;Is A button just pressed?
	bpl exit

	lda #BtnRight
	bit Joypad		;D-Pad Right held?
	beq +

	;Check if able to wall jump to the right.
	jsr WallToLeft
	bcs exit
	bcc ++

+	asl
	bit Joypad		;D-Pad Left held?
	beq exit

	;Check if able to wall jump to the left.
	jsr WallToRight
	bcs exit

++	ldx JumpSpeed		;Is Samus in a slow decent?
	beq +
	dex
	bne exit

+	jsr DoJump

exit:
	jmp $CCC2		;Bye-bye!

Originally posted by Heran_Bago

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Kega Fusion is awesome, but it doesn't have some of the nifty features.

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