2008/3/3, TobiFlex <t.gubener@...>:
>
> I have never seen a picture from a minimig with a 2.04 bootscreen.

I have vague memories of some old screenshots showing kick3.x bootmenu

http://home.hetnet.nl/~weeren001/files/Minimig_proto_blit_trouble.JPG

> But the minimigtg68 can boot all versions of kickstartrom.
>
> Now I found a little but important difference in the 68sec000 and the
> TG68 IP Core.
>
> The tg68 is a 68000 Clone. But the 68sec000 insn't a 68000 and isn't
> a 68010. That is the Problem.
>
> The Move from SR is priviligated in the 68sec000. Kick >= 2.04 use
> this Instruction to check the CPU Type.
> For the kick 2.04 is the 68sec000 a 68010. But the 68sec000 has the
> exception stack frames from the 68000. That can't work without a
> patch.
>
> But the TG68 use the Move from sr in user state and use also the
> 68000 exception stack frames. That works fine.
>
> I think the TG68 IP Core is the better choose for the minimig!
>
You have done an amazing work :-)

Although I understand that proper sync is prioritary, I'm curious...
could your emulator work in an "async" way and get faster? It would be
a good test to discover if the current core would be enough for e.g.
020/14Mhz emulation speeds :-) And that could help to get more speed
with faster FPGAs... maybe implementing some kind of instruction
"pipelining"...

How is going RedSkulls' ECS emulation?


--
Saludos/Best Regards
Jaime Cagigal