If you have not found the answers you are after ....
I have originals of both Technical (111 pages) & User (101 pages) Manuals.

Also, I have a very messy but working 'design for a 2Kx8 expansion I made back in about 1988.
It uses 4 x 2114's (1Kx4)
I had almost given up on ever finding the manuals ...

So I decided to do some reverse-engineering on the address decoding section of my Emma 2 and wanted to share some of my findings. (I won't share my badly drawn schematic; well if somebody REALLY want it I can perhaps photograph it and send it by email...)

Alright here goes, I wanted to put a RAM ...

I have a few multimeters so the continuity testing will not be a problem.
I guess drawing up some kind of schematics would be the way to go then based on my findings with the continuity testing...

Thanks for helping out BigEd, I really appreciate all help I can get!

I'll see if I can figure out what goes where from the 74LS139 address decoder chip once I get some sparetime, probably in the near future on some weekend.
Stay tuned.

PS.
Got any tips on how to best figure this out manually?

I thought I would post an update on the progress of hunting down a technical manual for the Emma 2, I must say it's not going very well at all unfortunately... :(
I contacted LJ Create (formerly known as LJ Electronics) and they told me that they don't have any documentation left from the Emma 2 ...

Thanks for taking the time to reply!

As far as I know from the usermanual that can be found online you are supposed to link/disconnect certain pins on the "empty" DIP socket that can be found on top left in the Adress Deconding section on the PCB (can be seen on picture from the first thread you ...

Hello all 6502 fans!

I'm new to the board and this is my first post so don't get angry if I post this in the wrong forum section.

As the topic suggests does anybody have access to a technical manual for the Emma II trainer (6502 trainer)?
I'd like to add more RAM to this little beast and would ...