HHP-16K 41C ROM Emulator



#3

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


#4

Quote:
When I plug this empty (no eproms) unit into my HP-41CX, should I be able to read anything from my calculator?

No.

#5

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.


#6

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


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