Model 70 (8570) BIOS Versions

"Long" 16MHz planar
(Intel) D27512-2 x2

U169: 15F8303 externally, 15F8307 internally
U170: 15F8302 externally, 15F8306 internally, 04/11/1988


"Short" 20MHz planar
TC5710010D-20 (27x010-equivalent) x1

U10: 33F4906 externally, 33F4907 internally, 05/12/1988
U10: 64F3513 externally, 64F3506 internally, 12/15/1989