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- CWSDPMI is Copyright (C) 1995 Charles W Sandmann (sandmann@clio.rice.edu)
- 102 Hurst Ct, Destrehan, LA 70047
-
- This is the Beta 9 release. The files in this binary distribution may be
- redistributed without the source code provided:
-
- * This file (or its contents) must accompany CWSDPMI.EXE
-
- * CWSDPMI.EXE is not modified in any way except via CWSPARAM
-
- * Distribution with commercial or shareware programs is allowed but requires
- notification of the author by mail or acknowledged email
-
- * Notice to users that they have the right to receive the source code for
- CWSDPMI. (Distributors should indicate a site for the source in their
- documentation, contact address above if source is desired and not available).
-
- * CWSDPR0.EXE may be distributed if desired under the same rules as CWSDPMI.EXE
-
- -------------------------------------------------------------------------------
-
- CWSDPMI was written to provide DPMI services for V2 of DJGPP. It currently
- does not support 16-bit DPMI applications, DPMI applications requiring a
- built in extender, or some DOS/4G programs. It does support virtual
- memory and hardware interrupt reflection from real mode to protected mode.
- DJGPP V1.1x and RSX applications will also run using this server, which can be
- used to provide enhanced control over hardware interrupts. Some DPMI 1.0
- functions (0x506, 0x507, 0x508) have been implemented.
-
- Please report any applications which do not work properly to the address above.
-
- CWSDPR0.EXE is an alternate version which runs at ring 0 with virtual memory
- disabled. It may be used if access to ring-0 features are desired. It
- currently does not switch stacks on HW interrupts, so some DJGPP features
- such as SIGINT and SIGFPE are not supported (to be fixed someday).
-
- Directions for use (server can be used in either of two different ways):
-
- 1) "cwsdpmi" alone with no parameters will terminate and stay resident
- FOR A SINGLE DPMI PROCESS. This means it unloads itself when your
- DPMI application exits. This mode is useful in software which needs
- DPMI services, since CWSDPMI can be exec'ed and then will unload on exit.
-
- 2) "cwsdpmi -p" will terminate and stay resident until you remove it.
- It can be loaded into UMBs with LH. "cwsdpmi -u" will unload the TSR.
-
- 3) The file used for virtual memory swapping, if desired, is controlled
- by the "-sc:\cwsdpmi.swp" syntax on the command line. You must specify
- either a file with full disk/directory syntax, or "-s-" which disables
- virtual memory. The environment variables GO32TMP, TMP, and TEMP are
- no longer used.
-
- 4) The default swap file name is now c:\cwsdpmi.swp, but this can be changed
- with the CWSPARAM image, as can some other parameters.
-
- I would like to give special thanks to DJ Delorie who wrote the original
- GO32 code on which CWSDPMI is based. Morten Welinder also provided and
- improved much of the code in this program.
-