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ITT 2020 ( the first licensed Apple II clone )
Posted by: mactjaap on 2016-06-04 02:10:19
On behalve of our new forum member rfka01 I'm starting a topic about the ITT 2020. I have one for a long time. It's one of my first computers I started to collect, early '90s.

He is interested in a dump from the ROM to preserve it for emulation for future generations. I will share some of the information in this topic so more people can see what were doing and maybe contribute.

First of all I've made picture of the ROM chips. I also have a Apple II clone so I made a picture of the as well.

ROMITT2020.jpg

And now one of my Apple II clone:

IMG_7036.JPG

And some more pictures:

IMG_7037.JPG

IMG_7038.JPG

IMG_7039.JPG
Posted by: mactjaap on 2016-06-04 02:22:25
I started my ITT2020 and found out that it is not working OK. There are ( after pressing on the RAM chips to get them better attached to the board) questions marks, but no blinking cursor. Also there is no startup beep.

Also nothing happens when I push the enter button.

See how it looks:

question-marks.jpg

Anyone knows what is wrong? Keyboard error??

ps to be sure I checked the speaker. It is working OK. The old trick with a battery... Connect it short to a battery and you will hear a lot of noise!
Posted by: techknight on 2016-06-04 06:30:47
Bad ROMs will do that, as well as bad RAM. 

Thats assuming your voltage rails are solid. 
Posted by: rfka01 on 2016-06-04 12:11:38
A big thanks to mactjaap for agreeing to read the ROMs from his ITT2020. Knowing the ROMs were Apple licensed and should be identical to those of a simple Apple II is one thing, but having them preserved is another.

My motivation vor contacting mactjaap was that the emulation of the 2020's sister machine, the CP/M ITT3030 was gaining traction in the MAME emulator project. You can find the relevant thread here

http://forums.bannister.org/ubbthreads.php?ubb=showflat&Number=79452#Post79452

It would be nice to include the 2020 as well - the first Apple II compatible for the European market with PAL video output.

mactjaap, if you have any ITT2020 specific software, e.g. the original DOS 3.2 or any graphics software that exploited the added features, it would be great if you could image those disks as well.

Robert
Posted by: max1227 on 2016-06-04 13:42:30
Hi all,

I have exactly the same problem with my ITT-2020. If you could let me know if you find a solution that would be awesome.

Regards,

Max 
Posted by: mactjaap on 2016-06-05 12:29:42
My friend's EPROM reader is not OK. I'm thinking of buying one for myself. Could anyone recommend one? I'm me in this!
Posted by: rfka01 on 2016-06-08 06:17:07
I am very satisfied with my Conitec GALEP-4, but it needs a parallel port to work.

A lot of people have reported good success with the various incarnations of the Willem Eprommer,

e.g. http://www.ebay.de/itm/SIVAVA-Willem-Programmer-PCB50B-Universal-EPROM-16bit-Adapter-SOIC8-Adapter-/252398964441?hash=item3ac4268ed9:g:Z1UAAOSw34FVC8mV

best check your local 'bay.
Posted by: Cosmo on 2017-10-03 02:36:38
Have you guys been able to read the ROM files? I might be in need of them as well in the future....
Posted by: mactjaap on 2017-10-03 10:19:45
Ai. Missing the right equipment..
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