I bought about 7 old 60s,70s,And 80s computers for about 70 dollars one of them was a trs-80 model 4 microcomputer.
I got it to boot but all I can get to is the sysgen message:
The H in the top right corner means its looking for a hard drive. when you enter the date and time, hold down the enter and clear keys and it will not execute the sysgen command, and drop you to a command line.
What do you do now? You have 60's and 70's computers. I suggest put the model 4 aside and start working on the 60's stuff. Pray tell what else did you get? Could be the deal of the century.