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From: clubmac@runx.UUCP
Newsgroups: comp.sys.mac
Subject: System 3.3 & FKEYs
Message-ID: <625@runx.OZ>
Date: Thu, 29-Jan-87 11:26:28 EST
Article-I.D.: runx.625
Posted: Thu Jan 29 11:26:28 1987
Date-Received: Wed, 11-Feb-87 07:32:41 EST
Organization: RUNX Un*x Timeshare.  Sydney, Australia.
Lines: 22


Following my posting about the loss of command-shift-digit control of FKEYs,
under System 3.3, a fellow LightspeedC user pointed out that there was a ToolBox
global ScrDmpEnb, a byte at $2F8 indicating whether the ToolBox Event Manager is
handling FKEYs.  To quote Inside Mac Vol. 1, page 258...

"Assembly-language note: You can disable GetNextEvent processing of Command-
Shift-number combinations by setting the global variable ScrDmpEnb ( a byte)
to 0"

Seeing this, I decided to bring the micro debugger up and check the value of
ScrDmpEnb. Now, since FKEYs weren't accessable per Command-Shift-digit, the
value of ScrDmpEnb according to IM Vol. 1 should be zero. 

However, the value was in fact $FF (-1, or TRUE)! So, I set ScrDmpEnb to zero.
Lo and behold! A miracle! FKEYs came back!!!!

Clearly, Inside Macintosh is wrong.

By the way, does anyone know how to bring the microbugger up without using the
interrupt switch?

Jason Haines