Message-Id: <m104pO5-000S2NC@inti.gov.ar>
Comments: Authenticated sender is <salvador AT natacha DOT inti DOT gov DOT ar>
From: "Salvador Eduardo Tropea (SET)" <salvador AT inti DOT gov DOT ar>
Organization: INTI
To: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>,
        Takeo Hironaga <umhirona AT cc DOT UManitoba DOT Ca>, djgpp AT delorie DOT com
Date: Mon, 25 Jan 1999 14:07:12 +0000
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Subject: Re: RHIDE under Japanese Win95
References: <m104mNv-000S2HC AT inti DOT gov DOT ar>
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Reply-To: djgpp AT delorie DOT com

Eli Zaretskii <eliz AT is DOT elta DOT co DOT il> wrote:

> 
> On Mon, 25 Jan 1999, Salvador Eduardo Tropea (SET) wrote:
> 
> > Takeo Hironaga <umhirona AT cc DOT UManitoba DOT Ca> wrote:
> > 
> > >   Hi, I've been trying to get djgpp and RHIDE up and running, djgpp seems
> > > working not too bad, but the problem is that I can NOT see the display of
> > > RHIDE,or info, or any program come with djgpp. 
> > > I mean, they display nothing!  
> > > 
> > >   Is there a way to fix those problems? 
> > 
> > I never saw such a thing.
> 
> Probably because you never saw a Japanese PC ;-).

:-)), true I saw it only in movies.
 
> Here's the most probable cause: Japanese PCs don't use text mode, they 
> simulate it.  They do that because there's no way the thousands of 
> Japanese characters could be displayed in text mode.  So the PC is 
> actually switched to graphics mode, and it thus needs a special function 
> of Int 10h be called to refresh the display after a program has written 
> to the text video RAM.
> 
> DJGPP v2.02 does this automatically as part of conio functions (see the 
> function refreshvirtualscreen in conio.c), and latest versions of Emacs 
> do it as well, even when Emacs doesn't use conio functions.  I don't know 
> if recompiling RHIDE with v2.02 will solve this, though; if RHIDE doesn't 
> use conio functions to write to the screen, it won't.

No conio is used, direct writes to RAM using the ScreenPrimary value.
 
> The above is all based on the assumption that the PC in question uses the 
> so-called DOS/V specification to simulate text mode; if not, then even 
> the new conio won't help.  I asked the user whether this was the case, 
> but didn't get any reply yet.

Ok.
 
> (I know that the report was about Windows 95, but I bet Japanese versions 
> of Windows simulate DOS/V so that DOS programs should behave the same as 
> they do on plain DOS.)

If that's the case I'll try to make the modifications in the code and send a 
small test tp Takeo.

SET
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Salvador Eduardo Tropea (SET). (Electronics Engineer)
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