🚀 go-pugleaf

D'Arcy J.M. Cain (darcy@druid.uucp) wrote:
: rnichols@cbnewsg.cb.att.com (robert.k.nichols) writes:
: >In article <1jmeupINN4g9@savoy.cc.williams.edu> 93gke@williams.edu (Just Ask The Axis) writes:
: >>I am trying to read the arrow keys from a PC keyboard in C. So far
: >You can use getch() to read the arrow keys.  The extended keys all
: >return a 2-byte sequence, with the first byte being either 0 or 0xE0.
: 
: Where did you get that 0xE0?  It returns a zero byte followed by the
: scan code.
: 
The E0 (as the Norton guide will tell you) comes directly from the keyboard
and is read by INT 9.  It is sent by the extended keys on 101 (and greater)
key keyboards.  Ie: the cursor movement, home, end, insert, delete keys,
etc. all prefix their scan codes with an E0.  Note that the numeric island
keys do not prefix with an E0.  They just send the scan code - as you were
describing.  Naturally, the 84 key keyboard knows nothing about E0 codes.

-- 
Chris Huey                                               Motorola Computer Group
cah@pdx.csd.mot.com                                      Voice: (503) 520-5215
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