Emax

You don’t have any expansion boards to be populated.
They plug on top of the blue connectors on the corner of the board.

So having different PALs won’t help you- you already have the max for this config.

Those other slots are for different DRAM that make 1M, but as I said before- you can’t populate both.

-T


On Jan 25, 2016, at 11:30 AM, Carl Simms carlthepianist@... [emax] <emax@yahoogroups.com> wrote:


Http://imgur.com/a/LAqMQ <http://imgur.com/a/LAqMQ>


No expansion nut from what i can make out i have several rows of unpolated sockets.

So im not sure if yhoses pdfs apply to my motherboard
Sent from Yahoo Mail on Android <https://overview.mail.yahoo.com/mobile/?.src=Android>
 
Looking at the guide
1) you already need to have an expansion board 2216.
Where that is the case, you would already have IP436 / IP438 as applicable (mentioned in the guide, and likely why Emu didn’t give up those binaries- without a board you are expanding nothing)

2) But to add additional 2MB increments you have board 2208 (x1 or x2) which may or may not be populated fully.
- you need IP439 or IP440 and possibly IP430 depending….to add more memory to those boards.

So it seems those are the 3 most likely chips that might need to be made….
IP439 / 440, and possibly 430

-T

On Jan 24, 2016, at 6:04 PM, Gary Doty djrgary@... <mailto:djrgary@...> [emax] <emax@yahoogroups.com <mailto:emax@yahoogroups.com>> wrote:

The EmaxII memory retrofit instructions in the files section may provide further insight. I have so far not seen any 1 meg units. There were 2 different upgrade boards available, I believe which board depended on if you had a 1 meg or 2 meg on mainboard. Both boards were available to use in either keyboards or racks

Sent from Yahoo Mail on Android <https://overview.mail.yahoo.com/mobile/?.src=Android <https://overview.mail.yahoo.com/mobile/?.src=Android>>

Carl-

I am not unwilling to make some ICs for you, I just can’t guarantee it will work out.
I also don’t want to make a set of 6 chips and charge for 6 when you might specifically need 1 or 2- which is what needs figured out at this point.

From my understanding:
there were 2 sections of the main board for RAM.
In the event you have 1MB, one section of the board is populated, for 2MB, a different section.
Again, from my understanding- you can’t use both sections of the board.

So to go from 2MB, upwards you would have to have an added memory expansion sitting on top of the main board.

Now- if someone has a 1MB the capability may be there to get to 2MB.
or if you had a partially populated expansion board, the PALs may make it so the board could get fully populated….

Anyone more familiar with the different installed memory amounts in Emax 2 care to chime in?

It could also be helpful if people who have different amount of memory in the Emax 2 wanted to post information or pics so we can validate the above 1MB / 2MB main logic board memory config info….

Regards,
Ted

On Jan 24, 2016, at 1:03 AM, Carl Simms carlthepianist@... <mailto:carlthepianist@...> <mailto:carlthepianist@... <mailto:carlthepianist@...>> [emax] <emax@yahoogroups.com <mailto:emax@...m> <mailto:emax@yahoogroups.com <mailto:emax@yahoogroups.com>>> wrote:

I can act as a guineepig if anyone wisjesto make these files into kits.

I currently have 2mb stereo but my motherboard has many empty ram slots.

From what i can tell no expamion cards are fitted but those may only apply to keyboard motherboards.

Ill try to take a picture of the internals of my rack so others can see.

Sent from Yahoo Mail on Android <https://overview.mail.yahoo.com/mobile/?.src=Android <https://overview.mail.yahoo.com/mobile/?.src=Android> <https://overview.mail.yahoo.com/mobile/?.src=Android <https://overview.mail.yahoo.com/mobile/?.src=Android>>>

I know this is a long time coming, as I mentioned this months ago… but here we are.

First I would like to thank:

Steve Klein - who through his persistence acquired these original binary files from Emu Systems
They may not be a complete set, but it’s possible someone may be able to use them to increase their memory so I am posting.

Please note that some odd memory combos the ICs may not be there- but hopefully the most common combos are here.

Frank Klein - who made an attempt to convert one of the files by hand- but upon review it would have been no good, thanks for his effort though.

I found several things- jedutil wouldn’t convert them, I had to keep searching until I found a version of jedutil which worked. 
When I got a program that actually gave me more info why it wouldn’t convert, there was missing device specific information in the original binary due to proprietary format.
Fortunately, since I had the Emax 1 SCSI PAL binaries (which had the same issue, way back when- but someone I know had converted them for me at the time - I didn’t know how he did it, so I had to learn how myself), I was able to figure out this critical information.
I was able to modify the files and VOILA!!! - conversion of files by utility is successful!

The PAL-JED files are used to program PAL16R4.
Most common (read inexpensive) programmers today are not going to program PAL ICs (my $1100 one does)…. though many will program GAL ICs.

So I went on to attempt to convert to GAL for you folks.
I had to find a working conversion program to change them as originally PAL2GAL didn’t work… again it wanted some device information that was missing- but I didn’t know what the program was looking for, and it sure as hell wasn’t documented….

Eventually I found a different program out on the web that let me specify the source and destination devices… once I could do that, as I know that info- then I was able to create GAL compatible files.

These GAL-JED files assume you will be programming a Lattice Semiconductor GAL16V8 IC.
I have programmed the SCSI TIM PAL into a GAL and tested successfully (in case I ever can’t get the original equipment PALs), so these GAL files SHOULD work….

I cannot confirm the files will work with any other devices, though they might.

DISCLAIMER:
I am not responsible for the use / misuse, or any damage to a unit where these files were programmed to an IC and the IC installed.

Use these files purely at your own risk.

Good Luck with the files….

Regards,
Ted

PS- I don’t plan to start selling the ICs which is why I posted them to the group. I don’t have an easy way to completely test them. However, the files were made from Emu Binaries, it’s not a “reverse engineer” or “hack", it is a matter of proper conversion of proprietary-formatted files.

[Non-text portions of this message have been removed]

[Non-text portions of this message have been removed]

[Non-text portions of this message have been removed]







[Non-text portions of this message have been removed]