[Freedos-devel] Media Package Survey

[Jerome Shidel]

Hi, 

Since we may wish to discuss the provided and installed packages on the Install 
Media during this weekends FreeDOS online get-together, here is a “guest” link 
to view the current survey results.

https://fd.lod.bz/survey/?statistics=FDolmug1213 


Please note… This page display the latest results. The results displayed could 
change anytime the page is refreshed. So, they may change again before the 
online call. But if you feel like it, you can view them now. 

Also, if you haven’t filled out the Survey? Why? What are you waiting for?

https://fd.lod.bz/survey/ 

:-)

Jerome___
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Re: [Freedos-devel] changing keyboard layout

[Bret Johnson]

>> * KEYB does not hook int 2Fh just for installation check. KEYB is
>> "codepage aware", as it has produce the appropriate character code
>> for that particular codepage (font), and that is why INT 2Fh/AD81h
>> exists: DISPLAY will call KEYB whenever there's a codepage change
>> request, so that KEYB keeps aligned with the current codepage.

> I wasn't aware of this. Thanks for correcting.

> Tom

The interaction between the screen (Code Page) and Keyboard is pretty critical 
so that everything is displayed correctly.  In addition to DISPLAY, DOS has 
other "utilities" like "CHCP", "MODE CON CODEPAGE PREPARE", and "MODE CON 
CODEPAGE SELECT" to manipulate the screen and it all must interact correctly 
with KEYB.  In addition, many (if not all) of the KEYB languages will work with 
two different screen Code Pages (a primary and an alternate) and must know what 
the current Code Page is to work correctly.  There are even ways to manipulate 
the screen so you can get 512 different characters instead of just 256.  It can 
be VERY confusing to set things up correctly, especially if you're using an 
"unusual" language. And none of this even addresses what happens if you try to 
print something to a printer since a printer "Code Page" doesn't necessarily 
match what's on the screen.  As long as you limit yourself to the first 128 
ASCII codes you usually don't have problems.

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