...and what Im thinking about is - correct! - tuning
By replacing CPU with native 8086-1 and ROMs by 100ns model; the only thing Im afraid is RAMs - those currently installed are 180ns, so with 10,8 Mhz this may not work

Replace the EPROMS and test it with +20% Speed or so... If that works you can try next crystal with +30% or something like this...

Replacement of CPU and RAM requires to unsolder the old circuits. It is possible, but you have the risk of destroying the nice device...

Hello

I would say.... do not touch it . In this original state more unique and absolute RARE
But that is mine opinion

Kr,Hans

I agree completely!
And an elo between 1800-1900 still is a good strength!

Best regards, Paul

__________________
Wenn ich mich irre, sollte es ein Horizont Wirkung sein

Yes do not modify it, just enjoy the way it was programmed to be played.

Ok, this unit should stay as it is (in its original state) ,but if I'll obtain another one, then...

Then you hopefully leave it as it is, too, and sell it to me

__________________
Meine Schachfotos
Schachcomputer

By the way, I think we should also have to mention Yuri Shpeer as a co-author of Mirage at Debut's page

Hi Iven,
thank you for your suggestion. I found this reference and updated the Debut page in our wiki.

https://chessprogramming.wikispaces.com/Mirage

Cheers,
Andreas

Hello friends, I did perform Colditz test for Debut-M with following results (using EloStatTS software):

Debut-M/8086-5.4Mhz : 1792 11 770 48.3 % 1804 24/ 30 45.8s 396.7s 0.53

The problem was that it doesnt have Infinite Analysis level, so I had set 150min/40moves, but every time Debut took less than 5min to make a move. Due to this fact positions 12, 16, 20, 25, 27, 29 were not solved correctly, so shown results are below its potential for sure...