For sale programmed and modified GAL for 5160 motherboard. The first revision of 5160 has socket = no problem, just swap with old chip. In the second revision where 640KB is natively then old chip must be desoldered and then solder socket and put GAL. I can make extra soldering jobs - let me know.  In this auction I sell only GAL chip but may have extra 256kx1 dram chips. You have to fill appropriate drams in banks and setup software/driver to use UMB.