CWSDPMI

CWSDPMI

CWSDPMI is a DPMI host written by Charles W Sandmann. It can provide DPMI services for programs compiled with latest versions of DJGPP compiler system and can also be used for programs requiring a DPMI stub. It supports virtual memory and hardware interrupt reflection from real mode to protected mode. Programs compiled with DJGPP require a DPMI host, which is usually CWSDPMI.EXE or CWSDPR0.EXE. In case of CWSDPMI.EXE, the default paging/virtual memory file is C:CWSDPMI.SWP.

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 hardware interrupts, so some DJGPP features such as SIGINT and SIGFPE are not supported and will generate a double fault or stack fault error.

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