I guess, there is no such tutorial available. As i told two years ago, i never tuned those 68020 module sets. But it should be quite a simple job. Just remove the cover from the keyboard module and locate the crystal. Then replace it by a faster one. But don't exceed 24,576 MHz, as your module set won't work at higher frequencies. The crystal's replacement is easy to do, if you are familar with solder pens.

After tuning the module set, your display module will not work any longer. The only workaround is to replace the display too, but till now i don't know where to get "faster" displays. As long as you can't replace the display too, it is simply nonsense to dream on 24 MHz for your module set. You may try a crystal of 18,432 MHz - maybe your original display will accept this frequency, but i can't promise. In this case your module set ist exactly 50% faster than before. Not really much, but you will already note a slight increment of playing strength.

That's all for this evening - i have to proceed with my job...

Kind regards, Wilfried

BTW: If you want to use my forum nick instead of my name, please make sure to use it in a correct way: EberlW and not Eber

[lang=en]OK , Danke Wilfied. Entschuldigung , aber Ich habe gedacht das war Eber.LW weil EberLW kann ich nicht aussprechen ![/lang]

[lang=en]Sorry Wilfried[/lang]

[lang=en]But Wilfried ,the display modul of the Genius 68030 really look the same and works at 33Mhz , is the inside changed ? they are hard to find anyway and if you have to buy the cpu modul with it ,it will cost way too much !(1700 E last ebay sale )
But is it simply possible to replace a 68020 cpu by a 68030 or even a 68040 ?
That would be great as those cpu are now cheap (obsolete but still possible to find)
Regards[/lang]

Hi dankal,

the Genius module works with 33MHz, but it connects to the display with a lower speed. I don't know exactly but I guess it's 16MHz - that's why the normal display module works with the Genius.

The 68020 modules connect to the display with their original clock speed - that's OK for their standard speed but becomes a problem if you put the clock speed higher than 16..18MHz.

A few years ago, there was a replacement display available that was able to drive higher frequencies up to 24Mhz that could be soldered into the display module. Unfortunately, these displays were quite sensitive to the higher voltage you need to drive the overclocked module (up to 6V), so many of them died. Today, we don't know any compatible replacement display that's able to drive 24MHz.

As a consequence, I wouldn't recommend tuning your module to 24MHz now. Better stay at a lower speed (16..18MHz) and stay with the original display. Then you also don't need to exchange the CPU with a version that's able to drive 24MHz (which would have been necessary with 24MHz since you can't drive the 12MHz version that high).

Regards,
Dirk

[lang=en]Hi Dirk
Thanks very much for those explenations. I guess it's no use to change the 68020 for a 68030 if it stays at 12 mhz. I will keep my Lyon at is original speed,its too bad because it is much stronger at 24mhz, it roars much louder!
Regards[/lang]

[lang=en]By the way do you know if the LCD module (marked 16b/32b modul )of Lyon or Vancouver can replace the one that come with a Risc modul ?
They really look the same and I have an good offer for a Risc modul without display ,but if it don't work, it's a waste of money because it will be quite impossible to find a Risc display modul alone,as it is already very seldom to find a complete set of Risc moduls.
Regards to all
Daniel[/lang]

Hi

Yes, the display 16/32 bit modules of Lang-series or RISC are the same.

greetings

Xavier

[lang=en]Thanks alot Xavier
Merci beaucoup Xavier[/lang]