N82S131N  (AMD27S13 compatible)  512*4 PROM    

Filename                Label
u20.bin                 34-0320 / 01
u21.bin                 34-0321 / 01
u34.bin                 34-0317 / 01
u35.bin                 34-0316 / 01
u43.bin                 34-0323 / 01
u48.bin                 34-0315 / 01
u49.bin                 34-0314 / 01
u57.bin                 34-0324 / 01
u62.bin                 34-0319 / 01
u63.bin                 34-0318 / 01
u66.bin                 34-0322 / 01