// #LAYOUT# STD *       #TAKE-HIGH
// #LAYOUT# *   BASIC_0 #TAKE-HIGH
// #LAYOUT# *   *       #IGNORE

// This has to go $E000 or above - routines below bank out the main BASIC ROM!

#if CONFIG_MEMORY_MODEL_46K || CONFIG_MEMORY_MODEL_50K

helper_gc_set_memmove_src:

	// Unmap BASIC lower ROM

	lda #$26
	sta CPU_R6510

	// Set memmove__src

	lda (OLDTXT),y
	sta memmove__src+0
	iny
	lda (OLDTXT),y
	sta memmove__src+1

	// Restore default memory mapping

	jmp_8 helper_gc_misc_end

helper_gc_increase_oldtxt:

	// Unmap BASIC lower ROM

	lda #$26
	sta CPU_R6510

	// Increase OLDTXT accordingly

	lda (OLDTXT),y
	clc
	adc INDEX+0
	sta (OLDTXT),y
	iny
	lda (OLDTXT),y
	adc INDEX+1
	sta (OLDTXT),y

	// FALLTROUGH

helper_gc_misc_end:

	// Restore default memory mapping

	jmp remap_BASIC

#endif