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68010 in Mega STE

Posted: Sat Jun 09, 2018 10:05 am
by Petari
Finally I was able to put working 68010 CPU in my Mega STE, thanx to Exxos, who generously sent me 1 piece. Saying it because I ordered one some years ago from China, and it is dead as piece of rock. It works with TOS 2.06 - where is support for that CPU, and will work with some other versions what I prepare(d) - like 1.62 with large stackframe support.

But any switching of cache to on results in immediate crash, freeze - so nothing from 16 MHz faster work with 68010 . Did not see it mentioned anywhere. And there is of course incompatibility with plenty of SW. So, I don't see why someone would use that CPU in Mega STE, or even in STE . It may be slightly faster with some instructions, there is support for virtual memory - but I don't know any SW what uses it. Another feature, which was implemented, and barely used - or better to say here: never used ?

Re: 68010 in Mega STE

Posted: Sat Jun 09, 2018 12:05 pm
by frank.lukas
May be try the lastest 256kB EmuTOS Version in the Mega STE with the 010 CPU.

Re: 68010 in Mega STE

Posted: Sat Jun 09, 2018 6:28 pm
by Petari
Why should I lower compatibility even more with EmuTOS ?
And really no time for some experimental OS - sorry, but EmuTOS is still it. My Mega STE started making problems, and getting unreliable. So, I need some serious servicing of it this days.

Re: 68010 in Mega STE

Posted: Sun Jun 10, 2018 9:47 am
by Petari
Here is how it works with modded TOS 1.62:
https://youtu.be/YZYI6ZylMeo
Basically, it is same as image what I posted in February - just added some extra Mega STE initialization and new icons.
T162LSI5.ZIP
(106.78 KiB) Downloaded 11 times
Works with 68000 CPU too. Of course, be prepared that many SW will not work. Mostly games, I guess - larger stackframe. But there may be other cases. As said cache on will freeze computer immediately . And my modded TOS core for RAM, what works well with 68030 fails with 68010 too - what is very strange, since I used exactly the same stackframe code as in ROM version. But this is not for gamers, for sure.
You can use this ROM in STE too .

Re: 68010 in Mega STE

Posted: Sun Jun 10, 2018 3:47 pm
by Steve
frank.lukas wrote:
Sat Jun 09, 2018 12:05 pm
May be try the lastest 256kB EmuTOS Version in the Mega STE with the 010 CPU.
I think this is a good idea and no harm in trying... :)