HP Forum Archive 17

[ Return to Index | Top of Index ]

HHP-16K 41C ROM Emulator Message #1 Posted by Ron Fredericks on 10 Sept 2007, 3:51 a.m. I recently acquired this device with no doc's so I'm not sure how to test it to see if it is working. When I plug this empty (no eproms) unit into my HP-41CX, should I be able to read anything from my calculator? Anyone know how to configure the dip switchs for some valid combinations of eproms? Some photos and a blog post Best regards, Ron Fredericks

Re: HHP-16K 41C ROM Emulator Message #2 Posted by Eric Smith on 10 Sept 2007, 4:20 a.m., in response to message #1 by Ron Fredericks Quote: When I plug this empty (no eproms) unit into my HP-41CX, should I be able to read anything from my calculator? No.

Re: HHP-16K 41C ROM Emulator Message #3 Posted by Winfried Maschke on 11 Sept 2007, 10:04 a.m., in response to message #1 by Ron Fredericks Quote: Anyone know how to configure the dip switchs for some valid combinations of eproms? I know only one switch setting for a 16K EPROM-Set with 2x2764 and 1x 2732. The left 4 switches on the picture in your blog are selecting the type of EPROM-Set. 1 up, 2up, 3 down and 4 down is 16K. Only switch 2 has to be different to the picture. With the other bank of switches on the right side you can select between port 1+2 or 3+4 in this case.

Re: HHP-16K 41C ROM Emulator Message #4 Posted by Ron Fredericks on 19 Sept 2007, 5:19 p.m., in response to message #3 by Winfried Maschke Thanks Winfried. This helps alot. I continue to build out the blog post. I hope to clarify DIP settings for port switches so I can addrees port 1+2 or port 3+4? Maybe on inspection this will be more obvious but if you get a chance, let me know. All the best, Ron

[ Return to Index | Top of Index ]

Go back to the main exhibit hall