|Re: HP-41 Hackers, HARDWARE, MLDL -->sources|
Message #10 Posted by Jean-Christophe Pujol on 23 Apr 1999, 11:21 a.m.,
in response to message #9 by Reinhard Hawel
Ok guys, some info about Hp 41 H/W and MLDL below:
- HP 41 C Bus Interfacing by Jim De Arras
PPC Calculator Journal V7 N3 Page 20 ---> The basics.
- HP-41 Machine Language Development Lab - MLDL by Lynn A. Wlikins
PPC Calculator Journal V9 N3 Page 27 ---> All you want to know about MLDL, schematics at Pages 32 thru 34
- MLDL Ram Modification by Chris Rath
PPC Calculator Journal V9 N4 Page 25 ----> a helpful modif. to use more modern Ram chips.
- INSIDE THE HP 41 C by Kelly McClellan
PPC Journal V6 N6 Page 4 ----> Pages and pages of schematics, diagrams and photos about our precious thing and more !!!
also a chapter on how to make a plug for the 41 I/O ports (have to be precise in the making but I think contacts found on old 5"1/4 floppy connectors would do it right (golden plated models are best).
- Continued in PPC Journal V6 N7 Page 47
Want more ??? Do hurry to the URL below http://www.waterw.com/~jake-s/index.html and ask Jake Schwartz for his two CD-roms set of PPC Journal/CHHU Chronicle / HPX Exchange etc. Archive in PDF format. A modest fee for hours of reading, printing and wonder. Thanks Jake!
I would be happy to help any people wanting to make a MLDL, but I can't find the time do it myself for the moment. Feel free to e-mail me directly.
HP Forum is great!