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229 lines
8.7 KiB
Plaintext
229 lines
8.7 KiB
Plaintext
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; File: DblByteCompat.a
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;
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; Contains: See Dan's heart-wrenching tale below…
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;
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; Written by: Dan Quayle
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;
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; Copyright: © 1992 by Apple Computer, Inc. All rights reserved.
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;
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; Change History (most recent first):
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;
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; <SM2> 11/3/92 SWC Changed ScriptEqu.a->Script.a.
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; <3> 4/17/92 JSM Moved this file from {IntAIncludes}DblByteCompatPriv.a to
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; {ScriptMgr}DblByteCompat.a.
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; <2> 1/15/92 SMB Remove END. Moved equates, records and macros to ScriptPriv.a.
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; <1> 1/14/92 SMB first checked in
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;
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;
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;-------------------------------------------------------------------------------------
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;
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; So what is this nightmare??
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; Once long, long ago there was going to be a new age for KanjiTalk with an elegant
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; method for doing input methods. The design proceeded it was sweet and clear as a
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; child's eyes. But then things started to darken, angry war clouds darkened the
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; sky and the titans of Ops/Tech and Cupertino did battle once again.
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;
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; When the sky cleared there were many causualities, but perhaps the greatest was
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; the need to support old input methods. Thus this ugly, ugly file.
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;
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; The deal is that we hacked together an Init that supports old input methods.
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; We also decided that new input methods should be selectable from the Apple Menu
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; just the way keyboards have been since 7.0.
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;
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; In the pre-7.0 kanjitalk you selected FEPs from a control panel just like
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; you select keyboards from a control panel. The original (apparently not very clear)
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; thinking was that old feps would still be selected from the old cdev. But feps
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; be they old or new are much more complicated. For example, when you pick one
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; you have to turn off another that might be on.
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; The old cdev couldn't just handle the old ones because it has no way of knowing about
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; anybody selecting the new ones
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;
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; So we have to put all the responsibility on the keyboard menu. Which now displays old
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; and new input methods for CJK scripts and keyboards for all other scripts.
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;
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; There are 4 switching conditions to worry about:
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; old input method -> old input method
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; old input method -> new input method
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; new input method -> new input method
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; new input method -> old input method
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;-------------------------------------------------------------------------------------
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Include 'SysEqu.a'
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Include 'Script.a' ; Public Script manager equates
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Include 'ScriptPriv.a' ; Private Script manager equates. <1>
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Include 'Traps.a'
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; Moved ScriptSystemGlobals record, NewScriptSystemGlobals record, intfRecord and selectors
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; and error codes for these routines to ScriptPriv.a. This file will now only contain
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; code and not templates and equates.
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; ----------------------------------------------------------------------------
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; Routine: GetIDEntry(table: Handle; id: Integer) : LongInt;
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; Input: (sp).l Handle to table.
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; (sp).w ID number in entry Record to return.
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; Output: (sp).l Item from table.
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; Warning: This routine follows Pascal register conventions.
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;
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; Retreive an item from a table using the ID number.
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; ----------------------------------------------------------------------------
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gidRecord Record {a6link},decr
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entry ds.l 1 ; entry returned from table.
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handle ds.l 1 ; table handle.
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id ds.w 1 ; id of entry Record to fetch.
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return ds.l 1 ; return address.
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a6link ds.l 1 ; old a6 register.
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gidFrame equ * ; size of local variables.
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EndR
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GetIDEntry Proc Export
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With gidRecord,ScriptSystemGlobals,SMgrRecord
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link a6,#gidFrame ; link the stack.
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move.l a4,-(sp) ; save registers
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GetSmgrCore a4 ; load script manager core.
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move.l smgrEntry+(smJapanese*4)(a4),a4 ; load doubleTalkRecord for Japanese.
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clr.w FISError(a4) ; clear the error global
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; Search the table for the given ID number. If we do not find it in the
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; table, set an error value and bail out.
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move.l handle(a6),a0 ; Load table handle.
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move.l (a0),a0 ; Load table pointer.
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move.l (a0)+,d0 ; Load table length.
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move.w id(a6),d1 ; Load search id number.
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bra.s @1 ; enter loop at bottom.
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@0 move.l (a0)+,a1 ; Load table entry.
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cmp.w (a1),d1 ; same id number?
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beq.s @okID ; yes -> we found it!
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@1 dbra d0,@0 ; do the next entry.
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clr.l entry(a6) ; clear the result.
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move.w #euBadID,FISError(a4) ; set the error code.
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bra.s @getIDDone ; return to the caller.
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; We've found the entry, so save the entry value.
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@okID
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move.l a1,entry(a6) ; save the result.
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; Unlink the stack, remove the arguments, and return to the caller.
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@getIDDone
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move.l (sp)+,a4 ; restore registers
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unlk a6 ; unlink the stack.
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move.l (sp)+,a0 ; pop return address.
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add.w #6,sp ; pop the arguments.
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jmp (a0) ; return to the caller.
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EndWith
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EndProc
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; ----------------------------------------------------------------------------
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; Routine GetKanjiUserIDIntf(id: Integer);
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; Input sp.w record ID for interface routine.
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; Output
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; Function If this is a valid record ID, and the new interface is ready,
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; deactivate the old interface and activate the new one.
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; ----------------------------------------------------------------------------
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uidRecord Record {a6link},decr
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id ds.w 1 ; interface routine ID number.
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return ds.l 1 ; return address.
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a6link ds.l 1 ; old a6 register.
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trueResult ds.w 1 ; activate result.
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envRec ds.b SysEnvRec.sysEnv1Size
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uidFrame equ * ; size of local variables.
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EndR
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GetKanjiUserIDIntf Proc Export
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With uidRecord,intfRecord,ScriptSystemGlobals,SMgrRecord
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link a6,#uidFrame ; link the stack.
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movem.l a2-a4,-(sp) ; save the registers.
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GetSmgrCore a4 ; load script manager core. <2>
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move.l smgrEntry+(smJapanese*4)(a4),a4 ; load doubleTalkRecord for Japanese. <2>
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clr.w FISError(a4) ; clear error global
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clr.w trueResult(a6) ; clear error result.
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; Try to find the new user interface routine. If we cannot find it in
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; the table, or it is not ready, return immediately.
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@fetchNew
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sub.w #4,sp ; make room for the pointer.
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move.l intfArray(a4),-(sp) ; push the array handle.
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move.w id(a6),-(sp) ; push record ID number.
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jsr GetIDEntry ; get the entry.
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move.l (sp)+,a3 ; load the record pointer.
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tst.w FISError(a4) ; bad index?
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bne @noNew ; yes -> bail out.
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btst.b #intfFReady-8,intfFlags(a3) ; is it ready?
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beq @noNew ; no -> bail out.
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; Try to find the old user interface routine. If we cannot find it in
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; the table, skip it entirely. Note that this is an attempt at recovery
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; since the interface index should always point to a valid interface.
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sub.w #4,sp ; make room for the pointer.
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move.l intfArray(a4),-(sp) ; push the array handle.
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move.w imMethod(a4),-(sp) ; push old Record ID number.
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jsr GetIDEntry ; get the entry.
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move.l (sp)+,a2 ; load the Record pointer.
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tst.w FISError(a4) ; bad index?
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bne.s @noOld ; yes -> skip old.
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; Deactivate the old user interface and set its flags correctly.
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cmp.l a2,a3 ; interface method same?
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beq.s @noOld ; yes -> pretend like no old.
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btst.b #intfFActive-8,intfFlags(a2) ; old intf active?
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beq.s @noOld ; no -> skip deactivate.
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move.w intfVol(a2),-(sp) ; push volume refNum.
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pea intfFile(a2) ; push file name pointer.
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IntfDeactivate ; deactivate old intf.
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bclr.b #intfFActive-8,intfFlags(a2) ; clear active bit.
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; Set the interface index to the passed index and activate the new user
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; interface. Remember to set the flags correctly again and also set
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; the saved ID number.
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@noOld
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move.w id(a6),imMethod(a4) ; set new intf ID.
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btst.b #intfFActive-8,intfFlags(a3) ; new intf active?
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bne.s @noNew ; yes -> skip activate.
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;now get the boot drive so input method can find its dictionaries
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lea.l envRec(a6),a0 ; get system folder's “volRefNum”.
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moveq.l #1,d0 ; actually, it’s WDRefNum.
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_SysEnvirons ; this is calling OpenWD to get it.
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move.w SysEnvRec.sysVRefNum(a0),intfVol(a3) ; set new volume refnum.
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clr.w FISError(a4) ; clear the error value.
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move.w intfVol(a3),-(sp) ; put the volref on the stack
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pea intfFile(a3) ; push file name ptr.
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IntfActivate ; activate new intf.
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tst.w id(a6) ; activating default?
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beq.s @0 ; yup, skip error check.
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clr.w id(a6) ; assume error, set default id.
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move.w FISError(a4),trueResult(a6) ; save true result.
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bne @fetchNew ; error -> one more try...
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@0 bset.b #intfFActive-8,intfFlags(a3) ; set active bit.
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move.w trueResult(a6),FISError(a4) ; set result.
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; Restore the registers, unlink the stack, pop the arguments, and return
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; to the caller.
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@noNew
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movem.l (sp)+,a2-a4 ; restore the registers.
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unlk a6 ; unlink the stack.
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move.l (sp)+,a0 ; Load the return address.
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add.w #2,sp ; pop the arguments.
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jmp (a0) ; return to the caller.
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EndWith
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EndProc
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End
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