LAPAddATQ

LAPAddATQ Add an entry to the queue

#include <AppleTalk.h> AppleTalk Manager

ATQEntryPtr ATQEntry; address of an ATQEntry data structure

returns Error Code; 0=no error

LAPAddATQ adds an entry to the AppleTalk Transition Queue.

theATQEntry is a pointer to an ATQEntry data structure. The CallAddr field of the

data structure holds a pointer to the routine that AppleTalk calls for

any AppleTalk transition event.

Returns: an operating system Error Code. It will be one of:

noErr (0) No error

Notes: From assembly language, you add and remove AppleTalk Transition Queue

entries by placing a routine selector in the D0 register, placing a pointer to

your AppleTalk Transition Queue entry in the A0 register, and executing a

JSR instruction to an offset past the start of LAP Manager. The start of

LAP Manager is contained in the global variable LAPMgrPtr (0x0B18).

The offset to LAP Manager routines is given by the constant LAPMgrCall

(2).

Here is assembly-language code that adds or removes AppleTalk Transition

Queue entries:

LAPMgrPtr EQU 0x0B18 ;LAP Manager entry point

LAPMgrCall EQU 2 ;offset to LAP Manager

routines

MOVEQ #RSel,D0 ;place routine selector

; in D0 (23 to add an entry,

;24 to remove one)

MOVE.L LAPMgrPtr,An ;put pointer to LAP Mgr in An

MOVE.L ATQEntry,A0 ;put ATQ entry in A0

JSR LAPMgrCall(An) ;jump to start of LAP Mgr

; routines

Referenced by (3):