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daf3ece326
interface for callbacks to doscmd from DOS, obsoleting the instbsdi redirector. (redir.com replaces it) A temporary hack is in place so the instbsdi program will (hopefully) work in the short term. Submitted by: Helmut F. Wirth <hfwirth@ping.at>
51 lines
2.3 KiB
C
51 lines
2.3 KiB
C
/*
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* Copyright (c) 1997 Helmut Wirth <hfwirth@ping.at>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice immediately at the beginning of the file, witout modification,
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* this list of conditions, and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id$
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*/
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/*
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* The emulator helper interrupt:
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*
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* Interrupt 0xFF is used by some emulator functions. It is a portal into
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* the emulator and cannot be used by ordinary DOS applications directly
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* The interrupt 0xFF is called by helper functions under DOS (such as
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* the redirector interfcae and the EMS emulation).
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* There are functions and subfunctions defined. (See emuint.c for details)
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*/
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/* The redirector interface (formerly instbsdi.exe) */
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#define EMU_REDIR 0x1 /* Function for redirector interface */
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/* No subfunctions defined */
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/* Expanded memory (EMS) driver callback */
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#define EMU_EMS 0x2 /* Function for EMS driver control */
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/* subfunctions for EMS */
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#define EMU_EMS_CTL 0x0 /* Control function, used during init */
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#define EMU_EMS_CALL 0x1 /* Callback, calls are routed via this */
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