Article View: comp.sys.ibm.pc
Article #41544character codes
From: Sanjay Berdia
Date: Fri, 02 Feb 1990 23:02
Date: Fri, 02 Feb 1990 23:02
51 lines
2380 bytes
2380 bytes
I have a few questions regarding the IBM defined ASCII and extended
character set ( and code pages ).
1. Could someone shed some light on the (IBM defined) ASCII
character 124. Is it a broken bar or a vertical bar ? I have
found some documentation that says it's a broken bar and some that
says it's a vertical bar. PCs that I have used display a
broken bar. Is the manufacture of the display adapter the issue ?
What about code pages ? If you have the time, could you try to
print ASCII char 124 and email me the results, what version of
DOS you are running, the code page if applicable, and the
manufacturer of your display adapter.
2. Do international versions of DOS prior to 3.3 down load a different
standard and/or extended character set other than the default
IBM character set ? If so, do they match one of the standard code
pages defined today.
3. Could someone please tell me what the following character codes
represent.
Code Page Key Comments
--------- ---- --------------------------------
437 0x9E
" 0xA9
" 0xAA
" 0xEE is this a small letter epsilon as it appears
in the definition of code 437 or is it a
symbol representing "member of a set"
" 0xF9
850 0xEE
" 0xF0 is this a hypen (0x20) ? If so, why is it
there ?
" 0xF2
4. Why do I get two make/break codes when I press the Print Screen key ?
Note, when I type Shift-Print Screen or Ctrl-Print Screen, I only
get one make/break code for the Print Screen key. I am using a
101 keyboard.
5. When I press Num-lock or Scroll-lock on a 101 keyboard, two 0xFA
codes are send by the keyboard controller before the make/break
key combinations. Why does this happen ? Is the ACK command being
sent ? I have tried to check to see if it is a command with no
luck. Any pointers would be greatly appreciated.
If anyone can help, please send me email. If there is enough interest, I
will post a summary.
Sanjay Berdia
berdia@dg-rtp.dg.com
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!mcnc!rti!xyzzy!dg-rtp.dg.com!berdia From: berdia@dg-rtp.dg.com (Sanjay Berdia) Newsgroups: comp.sys.ibm.pc Subject: character codes Message-ID: <2870@xyzzy.UUCP> Date: 2 Feb 90 23:02:55 GMT Sender: usenet@xyzzy.UUCP Reply-To: berdia@dg-rtp.dg.com Lines: 50