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From: stan@amiga.UUCP (Stanley Shepard)
Newsgroups: net.micro.amiga
Subject: Re: CreateExtIO and DeleteExtIO
Message-ID: <775@amiga.amiga.UUCP>
Date: Fri, 28-Feb-86 18:15:33 EST
Article-I.D.: amiga.775
Posted: Fri Feb 28 18:15:33 1986
Date-Received: Sat, 1-Mar-86 22:43:01 EST
References: <1394@caip.RUTGERS.EDU>
Reply-To: stan@coach.UUCP (Stanley Shepard)
Organization: Commodore-Amiga Inc., 983 University Ave #D, Los Gatos CA 95030
Lines: 55

In article <1394@caip.RUTGERS.EDU> walton%Deimos.Caltech.Edu@Hamlet.Caltech.Edu@caip.RUTGERS.EDU writes:
>From: walton%Deimos.Caltech.Edu@Hamlet.Caltech.Edu
>
> .. VTBeep ... refer(s) to the routines CreateExtIO and DeleteExtIO.  
>Both of these come up as undefined external references when these programs 
>are compiled and linked on my system, (1.1 System 3.03B Lattice) 
>
>Any ideas?
>

The problem is that the object modules were not distributed in amiga.lib
the soource for these modules can be found in Vol 2 of the ROM Kernal
manual.  The following is a brief code fragment excercised from the
aforementioned source.

(bunches of includes)

(title block)

struct IORequest *CreateExtIO(ioReplyPort,size)
struct MsgPort *ioReplyPort;
LONG size;
{
    struct IORequest *ioReq;
    if (ioReplyPort == 0) return( (struct IORequest *) 0);

    ioReq = (struct IORequest *)AllocMem(size, MEMF_CLEAR | MEMF_PUBLIC);

    if (ioReq == 0) return( (struct IORequest *) 0);

    ioReq->ioMessage.mn_Node.ln_Type = NT_MESSAGE;
    ioReq->ioMessage.mn_Node.ln_Pri = 0;
    ioReq->ioMessage.mn_ReplyPort = io_ReplyPort;

    return(ioReq);
}

(another title block)

DeleteExtIO(ioExt,size)
struct IORequest ioExt;
LONG size;
{
    ioExt->io_Message.mn_Node.ln_Type = 0xff;
    ioExt->io_Device = (struct Device *) -1;
    ioExt->io_Unit = (struct Unit *) -1;

    FreeMem (ioExt, size);
}


I hope the above helps.

						Stan Shepard
						Commodore-Amiga