This CPU is not a CPU that does not support the 7200xmp that I posted on my YouTube channel, but a CPU that a YouTube subscriber sent for testing purposes. It is basically stabilized up to 8400cl34 and is an inexpensive 6800cl34xmp RAM purchased from AliExpress for $75. Bootable area. It is possible up to 8600, but it seems that stabilization is only possible up to 8400. I think the stabilization test will end today, so I plan to proceed with pi-1b and 2.5b later