LJ Electronics Emma 2

For discussing the 65xx hardware itself or electronics projects.
8bitstedy
Posts: 3
Joined: 05 Sep 2017

Re: LJ Electronics Emma 2

Post by 8bitstedy »

Hi,

I'll scan some more manuals in the next few days and put them on my website. Happy if any of you guys want to copy/mirror them.
Tried both systems tonight, one works, the other appears to have a dead crystal. There is a cleaner copy of the schematic in one of the other manuals, will scan that section first.
It was quite a nostalgia trip entering a simple program using machine code, have not done that for many years.
jaevans
Posts: 26
Joined: 15 Aug 2016

Re: LJ Electronics Emma 2

Post by jaevans »

Fantastic 8bitstedy,

I've got several of the modules you have as well, so if you get to scanning, I could use the following:

Microprocessor application system MA04/1 Experiment manual.
Microprocessor application system MA02/1 Experiment manual.
Microprocessor fault simulation and diagnosis expansion system MA08
A/D converter MS3 (I think that's the module I have)
Strain gauge module MS13
Stepper motor MS4
I/O port monitor MS12

Still in search of the manual for the Memory Expansion Module w/EPROM programmer.
I think your tech manual is an older version of the manual. The one I sent Mike looks newer. I suspect he will make it available sometime soon (or else I haven't been able to find it here on the site).

Thanks a ton and a half.

John
Last edited by jaevans on Fri Sep 08, 2017 6:05 pm, edited 2 times in total.
jaevans
Posts: 26
Joined: 15 Aug 2016

Re: LJ Electronics Emma 2

Post by jaevans »

Associated pron. :) I removed the old battery and replaced it with what I had around. $25.00 was a bit much in my opinion for a replacement.

john
Attachments
EMMA-II-MemExp-IO.jpg
EMMA II Memory Expansion.jpg
Last edited by jaevans on Fri Sep 08, 2017 5:02 pm, edited 4 times in total.
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BigDumbDinosaur
Posts: 9428
Joined: 28 May 2009
Location: Midwestern USA (JB Pritzker’s dystopia)
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Re: LJ Electronics Emma 2

Post by BigDumbDinosaur »

jaevans wrote:
Associated pron. :)

Once I figure out how to share my photos.

john
You can attach photos to your posts here. Look below the editing window for the attachment functions.
x86?  We ain't got no x86.  We don't NEED no stinking x86!
jaevans
Posts: 26
Joined: 15 Aug 2016

Re: LJ Electronics Emma 2

Post by jaevans »

BigDumbDinosaur wrote:
jaevans wrote:
Associated pron. :)

Once I figure out how to share my photos.

john
You can attach photos to your posts here. Look below the editing window for the attachment functions.
Thanks - I was initially trying to share the photo via url from a host, but this works, too.
jaevans
Posts: 26
Joined: 15 Aug 2016

Re: LJ Electronics Emma 2

Post by jaevans »

If anyone wants to grab files and docs I already have, here's a link to the files I shared with Mike. Let me know if you can't get or see any of the files to the folder as I am just sharing the dropbox link to the folder.

John

https://www.dropbox.com/sh/fxv0ktys0z4z ... U2wFa?dl=0
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BigDumbDinosaur
Posts: 9428
Joined: 28 May 2009
Location: Midwestern USA (JB Pritzker’s dystopia)
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Re: LJ Electronics Emma 2

Post by BigDumbDinosaur »

jaevans wrote:
BigDumbDinosaur wrote:
jaevans wrote:
Associated pron. :)

Once I figure out how to share my photos.

john
You can attach photos to your posts here. Look below the editing window for the attachment functions.
Thanks - I was initially trying to share the photo via url from a host, but this works, too.
We prefer that you attach photos and documents to posts instead of linking to another site. Website pages come and go, whereas files associated with your posts here stay around. Also, some of the hosting sites tack on advertising and occasionally do other obnoxious things, such as pop-ups.

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x86?  We ain't got no x86.  We don't NEED no stinking x86!
8bitstedy
Posts: 3
Joined: 05 Sep 2017

Re: LJ Electronics Emma 2

Post by 8bitstedy »

Hi,

Two more manuals, MA-02 Experiment manual http://www.ianstedman.co.uk/downloads/MA-02.pdf (37MB) and Fault simulation and diagnosis, http://www.ianstedman.co.uk/downloads/M ... gnosis.pdf 22.6MB.

The second manual has the schematics for the VISA II add-on which adds raster graphics!

Enjoy
jaevans
Posts: 26
Joined: 15 Aug 2016

Re: LJ Electronics Emma 2

Post by jaevans »

8bitstedy wrote:
Hi,

Two more manuals, ..

Enjoy
Thanks much.

john
MrBiff
Posts: 6
Joined: 19 Nov 2019

Re: LJ Electronics Emma 2

Post by MrBiff »

Hi,

I recently acquired an Emma II trainer board and the Visa II expansion card.
I found the Emma II user manual online and the MA08 manual with both schematics.
Does anyone know where I can find the Visa II user manual?

Thanks,
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