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--- adding_buttons_for_bankstick_switching [2008/03/23 21:56]
+++ adding_buttons_for_bankstick_switching [2008/03/23 21:56] (current)
@@ Line 1: / Line 1: @@
+====== How to add bankstick UP/DOWN buttons to mbSID v2 ======
+This is another draft. Actually it's just the source code that you'll need to add :D Make sure you've read the other tutorials that cover all the stuff needed to understand this one. This is not really a great way of achieving what we want, but it's good enough for now...
+  * In app_defines.h you'll need to find some space (1 byte) for a variable we'll name "BANK_STICK_NO". This variable will hold the selected bankstick.
+  * In cs_menu_buttons.inc:
+<code>
+CS_MENU_BUTTON_BankUp
+	;; do nothing if button has been depressed
+	btfsc	MIOS_PARAMETER2, 0
+	return
+	incf   	BANK_STICK_NO, W		; increment bank, load result into w
+	goto	CS_MENU_BUTTON_AssignBank
+CS_MENU_BUTTON_BankDown
+	;; do nothing if button has been depressed
+	btfsc	MIOS_PARAMETER2, 0
+	return
+	decf  	BANK_STICK_NO, W 		; decrement bank, load result into w
+	;; goto	CS_MENU_BUTTON_AssignBank
+CS_MENU_BUTTON_AssignBank
+	andlw   0x07 			; this keeps result from getting bigger than 7
+	movwf	BANK_STICK_NO
+	movwf	CS_MENU_SID_M_BANK
+	movff	CS_MENU_SID_M_BANK, SID_BANK
+	;; mask out 'sent' flag
+	bcf		SID_PATCH, 7
+	call	CS_MENU_EXEC_GoToMain
+	return
+</code>

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