| Re: [hatari-devel] add support for TT ram -> problem with HD emulation and DTA |
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- To: hatari-devel@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [hatari-devel] add support for TT ram -> problem with HD emulation and DTA
- From: Uwe Seimet <Uwe.Seimet@xxxxxxxxx>
- Date: Wed, 17 Dec 2014 17:28:57 +0100
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Hi,
So for now just logging the fact that the transfer was illegal might be
enough.
@Roger: I don't know anymore what actually happens on a TT, do you?
Take care
Uwe
> Le 17/12/2014 17:06, Uwe Seimet a écrit :
> >Hi,
> >
> >It's probably not documented what exactly happens, but it's documented that
> >it doesn't work. (And it does not work, indeed.)
> >
>
> but what "doesn't work" really means ? Does the dma transfer stops when you
> read/write ? Does it complete but transfer garbage ? That's not precise
> enough to improve the emulation.
>
> For example, I tested on my STF that if you read a sector with the FDC to
> ROM, then you won't get any error, nothing will be written to ROM of course,
> but you have no way to know the operation had no sense.
>
> Is this the same when using the HD on an STF, a TT or a Falcon, which have
> different HW / DMA ? Does the command fails or completes in all cases ? It's
> hard to guess without proper tests.
>
> Nicolas
>
>
>