Date   : Fri, 16 Aug 2002 09:33:26 +1200
From   : Michael Foot <mjfoot@...>
Subject: Re: Firetrack emulation again

In message <20020815223100.J2325@...>
          James Fidell <james@...> wrote:

> Quoting Michael Foot (mjfoot@...):
> 
> > One more question - What, in the hardware, allows modes 3 and 6 to
> > have a small gap between each character line? Is it the CRTC? How does
> > it know to produce a gap?
> 
> It's the setting of the "scanlines per character" register in the CRTC,
> as far as I recall.  If you set (say) 10 scanlines per character, and
> you only have 8 lines of data for the character, the last remaining
> lines will be blank.

Do you know how the CRTC is told there is only 8 lines of data? I'll like
to be able to emulate this properly.

Thanks.

Mike.

-- 
Michael Foot <mjfoot(at)paradise(dot)net(dot)nz> *
http://homepages.paradise.net.nz/mjfoot/
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