Hi
I have just purchased an old HP-71B.
I removed the only ROM in the machine (an old British Social Welfare ROM used with a Bar Code Wand) and powered up via the AC adaptor - all is well so far - it worked.
I then tried batteries - however all I get is the ">" prompt and the RUN message and the "f" symbol in the display - the whole system seems to have frozen.
Can anybody tell me how to "reset" the HP-71B?
It seems dead to all key input now - just that above display when I apply any power.
Thanks