**********************************************************************
*
*       printer device functions
*
**********************************************************************

        SECTION         printer

*------ Included Files -----------------------------------------------

        INCLUDE         "exec/types.i"
        INCLUDE         "exec/nodes.i"
        INCLUDE         "exec/lists.i"
        INCLUDE         "exec/memory.i"
        INCLUDE         "exec/ports.i"
        INCLUDE         "exec/libraries.i"

        INCLUDE         "macros.i"

*------ Imported Functions -------------------------------------------

        XREF_EXE        CloseLibrary
        XREF_EXE        OpenLibrary
        XREF            _AbsExecBase

        XREF            _PEDData

*------ Exported Globals ---------------------------------------------

        XDEF            _Init
        XDEF            _Expunge
        XDEF            _Open
        XDEF            _Close
        XDEF            _PD
        XDEF            _PED
        XDEF            _SysBase
        XDEF            _DOSBase
        XDEF            _GfxBase
        XDEF            _IntuitionBase

**********************************************************************
        SECTION         printer,DATA
_PD             DC.L    0
_PED            DC.L    0
_SysBase        DC.L    0
_DOSBase        DC.L    0
_GfxBase        DC.L    0
_IntuitionBase  DC.L    0

**********************************************************************
        SECTION         printer,CODE
_Init:
                MOVE.L  4(A7),_PD
                LEA     _PEDData(PC),A0
                MOVE.L  A0,_PED
                MOVE.L  A6,-(A7)
                MOVE.L  _AbsExecBase,A6
                MOVE.L  A6,_SysBase

*           ;------ open the dos library
                LEA     DLName(PC),A1
                MOVEQ   #0,D0
                CALLEXE OpenLibrary
                MOVE.L  D0,_DOSBase
                BEQ     initDLErr


*           ;------ open the graphics library
                LEA     GLName(PC),A1
                MOVEQ   #0,D0
                CALLEXE OpenLibrary
                MOVE.L  D0,_GfxBase
                BEQ     initGLErr

*           ;------ open the intuition library
                LEA     ILName(PC),A1
                MOVEQ   #0,D0
                CALLEXE OpenLibrary
                MOVE.L  D0,_IntuitionBase
                BEQ     initILErr

                MOVEQ   #0,D0
pdiRts:
                MOVE.L  (A7)+,A6
                RTS

initPAErr:
                MOVE.L  _IntuitionBase,A1
                LINKEXE CloseLibrary

initILErr:
                MOVE.L  _GfxBase,A1
                LINKEXE CloseLibrary

initGLErr:
                MOVE.L  _DOSBase,A1
                LINKEXE CloseLibrary

initDLErr:
                MOVEQ   #-1,D0
                BRA.S   pdiRts

ILName:
                DC.B    'intuition.library'
                DC.B    0
DLName:
                DC.B    'dos.library'
                DC.B    0
GLName:
                DC.B    'graphics.library'
                DC.B    0
                DS.W    0

*---------------------------------------------------------------------
_Expunge:
                MOVE.L  _IntuitionBase,A1
                LINKEXE CloseLibrary

                MOVE.L  _GfxBase,A1
                LINKEXE CloseLibrary

                MOVE.L  _DOSBase,A1
                LINKEXE CloseLibrary


*---------------------------------------------------------------------
_Open:
                MOVEQ   #0,D0
                RTS

*---------------------------------------------------------------------
_Close:
                MOVEQ   #0,D0
                RTS

                END