Date:	Sat, 18 Feb 1995 03:11:28 -0700 (MST)
From:	Jon <jonh AT cc DOT usu DOT edu>
To:	djgpp AT sun DOT soe DOT clarkson DOT edu
Subject:	Re: interrupt handlers

On Fri, 17 Feb 1995, Cuthalion / Sliced Bread wrote:

> 
> On Fri, 17 Feb 1995, A.Appleyard wrote:
> 
> > (A book of interrupt info that I have says that on a PCjr `AH=5, int 0x16'
> > instead means `change keyboard layout language'. What is a PCjr and how common
> > are they? This incompatibility between makes of PC threatens to be slightly
> > disastrous to me.)
> 
> 	The PC Junior was never really popular.  It was release at around 
> the time of the 8088 (give or take two or three years) and had a colour 
> screen, I beleive, which was like a big thing at the time.  I have only 
> once seen one, and that was when my high school was sending old computers 
> (//e's, TRS-80, an original XT) to the place where computers are 
> eternally blessed.
> 
> 	Don't worry about them.  By chosing DJGPP, you lose compatibility 
> with anything below 386 (Why did I almost write that in hex?) processors, 
> which the PC Jr certainly has.  This may be wildly inacurate, but my 
> impression is that the PC Jr is a more gamerish XT. (I don't know where I 
> got this idea, having never actually seen a PC Jr that was plugged in. :)

   Back when they were popular, I used to know someone who had one.  They 
had CGA graphics, as I recall (didn't know it was called CGA then), and 
they came equipped with a menu-driven program that allowed the user to 
never have to see a DOS prompt at all (oh, goody...).  At the time, I 
seem to remember that I was using a Commodore 64.  Anyway, about 
compatibility, as people have stated, you need not worry about djgpp 
compatibility, and if you are using a different compiler, don't worry 
anyway, most every pc jr. has been long since 'upgraded' to work as a 
paperweight.   :-)

 -Jon

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