Path: utzoo!yunexus!ists!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!purdue!bu-cs!dartvax!eleazar.dartmouth.edu!earleh
From: earleh@eleazar.dartmouth.edu (Earle R. Horton)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Tail patches
Message-ID: <17105@dartvax.Dartmouth.EDU>
Date: 19 Nov 89 00:49:25 GMT
Article-I.D.: dartvax.17105
References: <5249@internal.Apple.COM> <17090@dartvax.Dartmouth.EDU>
Sender: news@dartvax.Dartmouth.EDU
Reply-To: earleh@eleazar.dartmouth.edu (Earle R. Horton)
Organization: Thayer School of Engineering
Lines: 44

In article <5212@internal.Apple.COM> chewy@apple.com (Paul Snively) writes:
>
>And I'd be interested in any examples of "something that we have 
>decided to break," let alone something that we have decided to break 
>and then not fix.

"Assembly-language note:  Changing the value of the block's master
pointer lock bit with a BSET instruction is faster than HLock.
However, HLock may eventually perform additional tasks."

immed		EQU $200	 ; execute immediately, bypass I/O queue

;The following twelve OS traps have been redundantly defined as
;Tool traps as well. They should be
;accessed as OS traps, but their slots in the Tool trap table
;will be reserved forever.
;	$1A GetZone
;	...

"Assembly-language note:  To get a pointer to the end of RAM from
assembly language, use the global variable MemTop."
     
Network Events.

Calling PopupMenuSelect under System 6.0 with Color QuickDraw caused
the menuWidth and menuHeight both to be set to -1!  I was told that
this was done deliberately to allow for the possibility of a loaded
menu being used on different monitors.  Result: CalcMenuSize is broken
under System 6.0 because its effect is not what IM says it is.

Tags.

Mac Plus keyboard shifted arrow keys return identical codes to numeric
keypad keys.  This hardware was shipped in a broken state, and no fix
was ever supplied.  Weak-ass excuse supplied by Apple was that this
was done for compatibility with original separate numeric keypad.


  "We broke it because it was a bad idea in the first place, anyway."

  "Fine, but remember, it was YOUR idea."


Earle R. Horton