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Subject: BITNET mail follows
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Date: Thu, 24-Jan-85 12:46:54 EST
Article-I.D.: uw-beave.514
Posted: Thu Jan 24 12:46:54 1985
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From: <DAVEG%SLACVM.BITNET@Lindy>

Date: 20 January 85 11:17-PST
From: DAVEG@SLACVM
To: INFO-MAC@SUMEX-AIM
Subject: BITNET mail follows

Date: 20 January 1985, 11:03:29 PST
From: DAVEG    at SLACVM
To:   INFO-MAC at SUMEX-AIM.STANFORD
Subject: macterminal keycodes revisited

The information posted recently regarding the Macterminal key code assignments
was extremely useful but unfortunately left some gaps.  I see how simple key
mappings take place and (for example) how to change the ascii code generated
by a CNTL-L to something new BUT it two things are left unanswered.  Both these
questions have to do with the keypad.
1.  There are two modes of keypad operation for a VT100.  One is that the
numbers on the keypad generate the expected value (i.e. 5->5).  Another
is that the numbers generate special esc sequences.  Where does Macterminal
look up the characters to be generated in the second case?
2.  The characters on the keypad on the outer top and right edges (eg. ENTER,
CURSOR arrows, etc.) all generate special escape sequences ( esc, [, D   or
something similar).  The lookup table KICH discussed in the earlier note
on INFO-MAC claims that when the (for example) + key on the keypad is pressed
(should be PF3 on a VT100) that a $92 is generated.  Since ascii characters
(I believe) of greater than 7 bits are not used, then what is the point of
$92 vs $72?  This is not PF3 anyway.  Are the extra bits used for another
lookup table?  If Command + is used (arrow left) it is mapped into $83 which
again is not cursor left.  Am I missing something or do we need more
as to how MacTerminal maps to and sends multiple key sequences.  Indeed those
are the changes I wish to make (eg. change arrow left from  <COMMAND,+> on
keypad to just <+> on keypad.       Hope someone out there has the answers!
        David Gelphman   DAVEG@SLACVM.BITNET