HP Forum Archive 13

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MLDL unit for 41 ?? Message #1 Posted by Sean McNamee on 12 July 2003, 4:34 p.m. I just read a post (http://www.classiccmp.org/pipermail/cctech/2002-August/001280.html) describing a machine-language development module for the 41 ... Anybody seen this or heard of it?

Meindert is the name of the man! Message #2 Posted by Vieira, Luiz C. (Brazil) on 12 July 2003, 5:39 p.m., in response to message #1 by Sean McNamee Hi; Meindert Kuipers is the name of the man who developed a custom MLDL for the HP41. This is one of his posts. I'm almost sure he will not feel bothered reading an e-mail from you. And he is a regular contributor, soon you'll be answered by him, too. Best regards. Luiz (Brazil)

Re: Meindert is the name of the man! Message #3 Posted by Sean McNamee on 12 July 2003, 6:11 p.m., in response to message #2 by Vieira, Luiz C. (Brazil) So, is this MLDL2000 the same unit? It looks like he is making a new version - I mean, other than the bug fix he refers to in the post. Or was there an original MLDL that is in production? Thanks for your response, Sean

Re: Meindert is the name of the man! Message #4 Posted by Sean McNamee on 12 July 2003, 6:18 p.m., in response to message #2 by Vieira, Luiz C. (Brazil) Come to think of it, the 41 m-code book I'm looking at which mentions this is copyright 1985 - so there is definitely an older version of this module. I wonder if anyone has used this version?

Re: Meindert is the name of the man! Message #5 Posted by Vieira, Luiz C. (Brazil) on 12 July 2003, 6:28 p.m., in response to message #4 by Sean McNamee Hi; As far as I know, Meindert is developing his custom version "from scratch". I've been following his posts, but I'd like being closer to his project. It is a teasing, amazing activity. Sorry, I have no further information. Meidert maintains a page where all of the developmetn is kept as doc files. I do not have the e-address right now... Best regards. Luiz (Brazil)

Re: Meindert is the name of the man! Message #6 Posted by Raymond Del Tondo on 12 July 2003, 8:32 p.m., in response to message #4 by Sean McNamee Hi, of course there are various other MLDL-type hardware extensions for the HP-41. Unfortunately, most of them had been designed and been on the market from 1980/81 to 1989 . Names which come to mind are: ProtoCoder, ERAMCO-MLDL, MBK ProfiSet, W&W RAMBox, VM HEPAX module, HP-41CY, and maybe more which I don't recall at the moment... Some only had EPROM sockets, other have RAM, and some have both, like the ProfiSet. As Luiz wrote, Meindert is building a new MLDL-type ROM simulator or RAMBox from scratch. This is a very cool thing, and I hope to be able to get a unit when he publishes the box:-) Regards, Raymond

Re: MLDL unit for 41 ?? Message #7 Posted by Meindert Kuipers on 13 July 2003, 3:45 a.m., in response to message #1 by Sean McNamee I heard my name mention a few times, it almost makes me blush ... I have a preliminary spec at www.kuipers.to/hp41. I have alomst finished an updated spec which I hope to upload somewhere during next week. My MLDL is a completely new design. I have learned from other designs, but mine has a different approach. There is now progress (had to fix a serious bug and do redesign) and I am busy simulating the thing. I hope to be able to build a new prototype before I leave for my summer vacation in sunny France (do not despair if you do not see any posts for a few weeks from me) but I will take my notebook and will be able to do some software development. Please email me for any questions you might have ... Meindert

Re: MLDL unit for 41 ?? Message #8 Posted by Dave Shaffer on 13 July 2003, 6:08 p.m., in response to message #7 by Meindert Kuipers re: "... my summer vacation in sunny France (do not despair if you do not see any posts for a few weeks from me) but I will take my notebook and will be able to do some software development." Now there's the OPERATIONAL definition of geek/nerd! (And, I bet we all do it! I'm currently debating whether to take a laptop when I go visiting parents and in-laws in a few weeks. I will, at least, take my bookmarks and history files on a floppy so I don't lose my place in this forum.)

Re: MLDL unit for 41 ?? Message #9 Posted by Emmanuel , France on 13 July 2003, 7:02 p.m., in response to message #7 by Meindert Kuipers Dear Meindert, Good enjoy then! ;o) Taste french wines, cheeses,... There's sometimes something more important than calcs. Kind regards from Normandy. Sincerely. Emmanuel

Re: MLDL unit for 41 ?? Message #10 Posted by Meindert Kuipers on 14 July 2003, 2:43 a.m., in response to message #9 by Emmanuel , France I am NOT a nerd. The main reason I take my notebook is that my kids can watch a DVD in the back of my car ;) Nerds do not have families (or do they ...). And I will not be able to go online anyway. And Emmanuel is totally right: I will enjoy the French Atlantic coast (though much further south than Emmanuel is) with its wines, cheeses, fish and all the other good things in life. Meindert

Re: MLDL unit for 41 ?? Message #11 Posted by Emmanuel, France on 14 July 2003, 5:28 a.m., in response to message #10 by Meindert Kuipers Dear Meindert, First, thanks. I'm really from Pont-L'Abbé near Quimper. The best part of Atlantic cost (Bénodet, Loctudy,...) with Portugal. ;o) However have a nice trip! Yours. Emmanuel

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