
This is the second BIOS for the IBM 5170.
It is dated 10JUN85.
It is found in type 2 motherboards running at 6 Mhz.

U27 has the IBM part number of 6480090, and is 32K in size
U47 has the IBM part number of 6480091, and is 32K in size

8 bit checksum of 6480090 = 71
8 bit checksum of 6480091 = 8F
                           ----
                    added = 00


There are two BIN files in this ZIP file:
1. BIOS_5170_10JUN85_U27_6480090_27256.BIN  --> Use this to create a U27 using a 27256 EPROM (rated at 150nS or faster)
2. BIOS_5170_10JUN85_U47_6480091_27256.BIN  --> Use this to create a U47 using a 27256 EPROM (rated at 150nS or faster)