MEMORY {
    page 0:
	ram_prog: origin = 0x0000, length = 0x1000
    page 1:
	data_x:   origin =      0, length = 0x4000
	io_x: origin = 0xc000, length = 16
	wdog: origin = 0xc020, length = 3
    page 2:
	data_y:   origin =      0, length = 0x4000
	extra_y:   origin =  0xe000, length = 0x2000
}

