Re: Mega STe DMA, HD floppy and other hardware issues

The Ox That Rocks wrote: 
Hi Hallward

Congrats! Nice work! 

Thanks! :-)

Unfortunately i did not manage to get my MegaSTe in HD mode, even
though I have the correct PAL chip and cleared the connection to the
68000.

Did you check your power supply as mentioned in that other posting of mine? Might be worth trying out.


So now I have ordered an AJAX chip to replace the WD1778ph-02-02.

That might be a good idea anyway, but I would assume that a 1772-02-02 should at least work now and then if not always. If you had no trace of it even once being able to read a HD floppy I think the problem is elsewhere.
I've been told by Best electronics that many Mega STe machines have problems with HD floppy drives, being RF interferences or other things. Try moving the floppy drive cable to another location inside the machine, or even try it out without the top plastic casing.


Is it your modified HD-drive you are using?

Yes. I'm curious however if a non-modified HD floppy drive would work. But I assume that in any case the drive 0/1 issue still exists, so that would have to be done.
As for the other modifications, I'm not sure.


As I can see on your drive
description, there are not any circuitry alteration´s although the
physical alterations may com in handy!

Yes -it's absolutely not necessary to cut the casing!
I know this is common practice for many Atari users -to use a craft knife and cut a big, ugly hole just because the eject button is different.
Personally I don't want my computer to look "butchered", but that's just me ;-)


Do you think that my german TOS2.05 is the problem. I´m working on
purchasing some new ROM´s and program the english version of TOS2.06
into them.

Hmm..... could be! I know that there are some issues with 2.05, but not sure what.
Could it be that TOS 2.05 doesn't have the HD support that 2.06 has? In any case I think you can use a HD cookie setter program instead, in the AUTO folder, or just run it once, manually.


Peter, Danmark 

That's not far away from here ;-)
Almost neighbours. hehe..


--
Hallvard

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