The item photo is a sample of the IC you will receive. On a Model B, this ROM will default to use ADFS 1.33 in an unmodified socket. On a Master 128 you will need to use it in one of the 4-7 ROM sockets, and UNPLUG ADFS 1.33, as well as the built in ADFS 1.50.
This product is ideal for individuals or organizations looking to restore or repair vintage BBC Micro computers or those specifically using 1.33 or 1.53 IDE drives.
