[Blindapple] Emulating Echo

Jayson Smith ratguy at bellsouth.net
Fri Jul 29 03:12:09 EDT 2005


Hi,
In case you don't still have it, the copy of Textalker 1.3 I was given is
still at the following URL.
http://jaybird.no-ip.info/disks/talking/tt13.dsk
Hope this helps.
Jayson.

----- Original Message -----
From: "Tony Baechler" <tony at baechler.net>
To: "Blind Apple Discussions" <blindapple at jaybird.no-ip.info>
Sent: Friday, July 29, 2005 2:58 AM
Subject: Re: [Blindapple] Emulating Echo


> Hi.  I'm not sure exactly what you mean by the Cricket since I never had
> one.  The point here is to simulate an Echo, not emulate it.  Emulating it
> would be very difficult if not impossible.  I wouldn't even try.  If I can
> trick Textalker to pretend there is an Echo where there isn't, and route
> that to a hardware port like com1, it would be possible to simulate the
> Echo, including review mode.  Cricket would really make no
> difference.  Also remember that A2 has no port and no means of emulating
> them.  The only slot it emulates, other than slot 6 to boot is slot 1.  It
> doesn't even really emulate ProDOS.  It has a dummy ProDOS driver built-in
> but doesn't actually do anything with the system files on a ProDOS disk.
I
> found that out when I was looking at jump.c.  It doesn't emulate slot
> 3.  If you do PR#3, it crashes.  We only have slot 1 to work with for now
> under A2.  If we can switch to something like an IIe or IIgs emulator,
> everything changes and we can consider a Cricket.  For now, I just think
it
> would be nice to use A2 reliably without a separate DOS screen reader and
> still use some of the Textalker functionality.  I think my next experiment
> will be to find the old 1.3 Textalker and try to get it to look in slot
> 1.  I hope I have that disk around here.
>
> At 09:40 AM 7/29/2005 +1000, you wrote:
> >Guys,
> >Has anyone thought that it might be easier to emulate a cricket than an
echo?
> >That way you're dealing with a serial interface, rather than an unknown
> >quantity in how to talk to the synth itself.
> >Then you'd just need code to strip out the control codes, and send the
> >resultant text to a text file, or something.
>
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