HP71b HPIL/HPIB devices

[Dave Frederickson]

Due to the different protocols, not all controllers can connect to all devices. For example, the Series 80 needs a Mass Storage ROM to access Amigo drives and the Extended Mass Storage ROM to access SS/80 drives and even with the HP-IL module, the Series 80 can't access a 9114. The 71 and 9121 are one of those combinations that weren't intended to work together.

You can run the built-in diagnostics if you want to test the drive.