HP Forums / HP Calculators (and very old HP Computers) / General Forum v / Hand Held Products 71M/M eprom carrier question

Post Reply 
Hand Held Products 71M/M eprom carrier question
06-16-2020, 10:50 PM
Post: #11
cmurillo Offline
Junior Member
 		Posts: 11
Joined: Jul 2017
RE: Hand Held Products 71M/M eprom carrier question
I wonder if the one with the two jumpers might be designed to accomodate 64K EPROMs also? In a 32K EPROM, pin 1 is VPP, but in a 64K EPROM pin 1 is A15 and pin 22 doubles as VPP / (OE)' . In the one with the two jumpers, the left jumper is pretty close to pin 1.
Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
RE: Hand Held Products 71M/M eprom carrier question - cmurillo - 06-16-2020 10:50 PM



User(s) browsing this thread: 5 Guest(s)

Contact Us | The Museum of HP Calculators | Return to Top | Return to Content | Lite (Archive) Mode | RSS Syndication