Eric Chu wrote:
> Hi, I've install DOSEMU 0.98.6-1 under Redhat 5.2. When I run the
> assembler for Motorola DSP56000, DOSEMU exits automatically. I read the
> document coming with the DSP software.
> It said the software will run DOS/4GW before running the assembler. I
> have follow the instruction in the readme file, but it doesn't help.
> Could you help me to solve the problem? Thanks!
>
> Regards,
> Eric
>
>
> /* $Id: readme.mem,v 1.3 1992/08/05 16:40:26 jay Exp $ */
> The MSDOS version of the clas software was created using the Watcom 386 C
> compiler. The resulting programs make use of the PC's extended
> memory and can be configured to use virtual memory.
> The program requires a PC-AT 386 or 486 with at least 2Mb of memory.
> The setup for extended and virtual memory use is discussed below:
>
> ---------------EXTENDED MEMORY CONFIGURATION FOR PC------------------
> The pc version uses the DOS/4GW extended memory manager supplied with
> the Watcom 386 C compiler. The memory manager executable, dos4gw.exe,
> is supplied with the clas software. It is called during program
> startup, and so must be locatable using the PATH environment variable.
>
> The dos4gw.exe program uses the environment variable DOS16M in order to
> choose an appropriate real- to protected-mode switch technique. In case
> the default operation does not work on your computer, change the
> switch mode settings with the following command:
>
> set DOS16m=value
>
> Do not insert a space between DOS16M and the equal sign.
>
> The table below lists the machines and the settings you would use with them.
> Many settings have mnemonics, listed in the column "alternate Name", that
> you can use instead of the number. Settings that you must set with the
> DOS16M variable have the notation req'd in the first column. Settings you may
> use are marked 'option', and settings that will automatically be set are
> marked 'auto'.
>
> status Machine Setting Name Comment
> ------ -------------- ------- --------------- ---------------------------------
> auto 386/486 w/DPMI 0 None Set automatically if DPMI is active
>
> req'd NEC 98-series 1 9801 Must be set for NEC 98-series
> auto PS/2 2 None Set automatically for PS/2
> auto 386/486 3 386,80386 Set automatically for 386 or 486
> auto 386 INBOARD None 80386 with Intel Inboard
> req'd Fujitsu FMR-70 5 None Must be set for Fujitsu FMR-70
> auto 386/486 w/VCPI 11 None Set automatically if VCPI detected
> req'd Hitachi B32 14 None Must be set for Hitachi B32
> req'd OKI if800 15 None Must be set for OKI if800
> option IBM PS/55 16 None May be needed for some PS/55s
>
> The following procedure shows you how to test the switch mode setting.
> 1. If you have one of the machines listed below, set the DOS16M environment
> variable to the value shown for that machine and specify a range of extended
> memory. For example, if your machine is an NEC 98-series, set DOS16M=1 @2M-4M.
>
> Machine Setting
> ------- ---------
> NEC 98-series 1
> Fujitsu FMR-70 5
> Hitachi B32 14
> OKI if800 15
> Before running DOS/4GW applications, check the switch mode setting by the following
> procedure:
>
> 2. Run PMINFO and note the switch setting reported on the last line of the display.
> (PMINFO.EXE is provided with the simulator). If PMINFO runs, the setting is usable on
> your machine.
>
> 3. If you changed the switch setting, add the new setting to your autoexec.bat.
>
> variable may be set to override the
>
> ---------------VIRTUAL MEMORY CONFIGURATION FOR PC -------------------
> In order for the virtual memory capability to operate properly, the PC's
> environment variables must have a defined variable DOS4GVM, with options to
> define virtual memory paramaters. If the DOS4GVM environment variable
> does not exist, the virtual memory capability does not operate.
>
> The possible parameters are:
> MINMEM The minimum amount of RAM managed by the VMM. Default is 512KB.
> MAXMEM The maximum amount of RAM managed by the VMM. Default is 4MB.
> SWAPNAME The swap file name. Default is DOS4GVM.SWP on the current drive.
> DELETESWAP Specifies that the swap file should be deleted.
> VIRTUALSIZE The size of the virtual memory space. Default is 16MB.
>
> In general, use the following format for the DOS4GVM environment variable:
>
> set DOS4GVM= [option[#value]] [option[#value]]
>
> As an example, the following line in your autoexec.bat file will enable an
> 8MB virtual memory swap file with automatic deletion of the swap file:
>
> set DOS4GVM=deleteswap maxmem#8192
> --------------------------------------------------------------------------
PS. When DOSEMU exites, I got the error message like that
ERROR: general protection at 0x614f: 66
ERROR: SIGSEGV, protected insn...exiting!
Thanks
