Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!van-bc!rsoft!mindlink!a186
From: Harvey_Taylor@mindlink.UUCP (Harvey Taylor)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: RASTPORT from ML
Message-ID: <5169@mindlink.UUCP>
Date: 14 Mar 91 22:54:39 GMT
Organization: MIND LINK! - British Columbia, Canada
Lines: 61

In <65143@eerie.acsu.Buffalo.EDU>, v089pfrb@ubvmsd.cc.buffalo.edu
                                        (Jeffrey C Murphy) writes:
|
| How do you locate the rastport value from machine language if
|your program is using the cli as the output window?
|

    You send you console task a packet, as outlined in the excerpt below.
 (Watch out for NULL values in the args returned. ie. Not a CLI, not a
  window)
+--
| A DiskInfo packet (ACTION_DISK_INFO = 25L) sent to the console handler
| ((struct MsgPort *)process->pr_ConsoleTask)) now returns not only the
| window pointer in the id_VolumeNode field, but also a pointer to the
| console IO block used by the console handler in the id_InUse field.
| (These fields are part of the InfoData structure that is filled
| in by sending the ACTION_DISK_INFO packet).  Remember that you must
| AllocMem your InfoData structure to assure longword alignment
| since a BPTR to the structure is arg[0] of the packet.
| A pointer to the ConUnit structure (see devices/conunit.h, .i)
| can be found via the console IO block pointer:
|      conUnit = (struct ConUnit *)
|                ((struct IOStdReq *)infoData->id_InUse)->io_Unit;
|
| There is a lot of useful information in the ConUnit structure
| such as text cursor position and limits.  If you are using the
| exec console.device directly, you should be able to get the
| ConUnit pointer from yourIoRequest->io_Unit.
+--

    If you are in the dark on DOS Packets you can take a look at:

    DOS Packets References
    ======================

    SENDPACKET.C by Lindsay (FF35 & 66)
    ASENDPACKET.C by Lindsay (FF35 & 66)
    CONPACKETS.C by Carol Scheppner (FF56)
    New DosPackets.txt by Carol Scheppner  (FF65)
    AMIGADOS.txt by Tim King
    MonProc.c by P. Lindsay  (FF69)
    MonProc.c by P. Lindsay  (FF79)
    PickPacket by Toebes & Walker (FF227)
    PacketSupport (a library) by O.Wagner (FF346)
    ---
    The Matt Dillon article in Trans-Ami #1
    The AmigaDOS Technical Reference Manual
    William Hawes in AA&J V3,#2.
    ---
    -het

    PS.
    I am collecting references on DOS Packets, Exec Devices, FileSystems.
 Email me your lists & I will summarize.

 "You put your eyes in your pocket & your nose on the ground.
  There oughta be some kinda law against you comin around." -R.Zimmerman

      Harvey Taylor      Meta Media Productions
      uunet!van-bc!rsoft!mindlink!Harvey_Taylor
               a186@mindlink.UUCP