Hi, I installed dosemu into a gentoo system in order to be able to compile dsp code and to communicate with a Debug-EVM dsp56002 board. It is: DOSEMU 1.4.0.8 (2013-01-07), configured: 2019-10-03 14:39:41 +0200 ... FreeDOS kernel build 2036 cvs [version Aug 18 2006 compiled Aug 18 2006] For that, I have an usb<->serial adapter on /dev/ttyUSB0. It seam to work, I can send mode commands, as example, after mode com1 baudhard=19200 N 8 1 UART is 16450 or newer. Programming baud rate: Maximum baud rate is 115200 (BAUDHARD=1152). no parity, 1 stop bit, 8 bit, 2400 baud, RTS on, DTR on. stty in linux show a change to 2400 baud (was 9600 before running dosemu and the mode command: stty -F /dev/ttyUSB0 speed 2400 baud; line = 0; With mode com1 baudhard=192 N 8 1 UART is 16450 or newer. Programming baud rate: 19200 (divisor 6). Forcing RTS/DTR on. stty show a change to 19200 baud, which is the only speed the dsp board can do. If I run its software, I get: E:\evm>evm56k EVM-56K rev. 1.05.1 (c) 1994, Domain Technologies, Inc. Can not initialize DSP56002 EVM and stty show a rate change to 2400 baud. I am a little bit lost here, also because mode is not consistent if I abbreviate or not the baud rate. Also, the help does not explain the difference between baud and baudhard. If I want to update freedos to the last version, is it enough to just download it and to copy the file over the existing installation? # # # Next is the assembler software named asm56k. You can download both software from here: ftp://ftp.tapr.org/dsp/Motorola/dsp56002/evm56k/kc7ww/ it's the file evm56k3.zip. It is a more recent version than mine. I try both with the same result: a complete dosemu crash. Both versions of asm56k work with a dos6.22 install in virtualbox. Before I make a bug report, I want to be sure it is necessary because asm56k on the dos 6.22 need both himem.sys which provide umb memory and DOS4GVM. For now, I cannot get himem.sys to work in dosemu. It is the original gentoo config, I copied /etc/dosemu/dosemu.conf to ~/.dosemurc and try a lot of things with the memory settings in ordeer to get some umb memory, but without success. My config.sys is: rem config.sys for DOSEMU + FreeDOS rem note that the initial "D:" is set to "Z:" at the end SWITCHES=/F DOS=UMB,HIGH dosdata=umb lastdrive=Z files=40 stacks=0 buffers=20 device=c:\dos\HIMEM.SYS device=d:\dosemu\ems.sys devicehigh=d:\dosemu\cdrom.sys install=d:\dosemu\lredir.com z: linux\fs\${DOSEMU_LIB_DIR}/drive_z ro shellhigh=z:\command.com /e:1024 /p but each time dosemu is starting, I just get: CONFIG.SYS error in line 9 >>>device=c:\dos\HIMEM.SYS That seam very strange to me because it can access config.sys which is in the same dosemu c: drive. autoexec.bat: @echo off rem autoexec.bat for DOSEMU + FreeDOS path z:\bin;z:\gnu;z:\dosemu set HELPPATH=z:\help set TEMP=c:\tmp set DOS4GVM=deleteswap maxmem#8192 blaster prompt $P$G unix -s DOSDRIVE_D if "%DOSDRIVE_D%" == "" goto nodrived lredir del d: > nul lredir d: linux\fs%DOSDRIVE_D% :nodrived lredir f: linux\fs/media/cdrom c rem lredir a: linux\fs/home/dom/evm56k/DSP56K c lredir e: linux\fs/home/dom/.dosemu/drive_e unix -s DOSEMU_VERSION echo "Welcome to dosemu %DOSEMU_VERSION%!" unix -e path %path%;C:\;C:\DOS;D:\;D:\DOSEMU; e: cd evm mode com1 baudhard=19200 N 8 1 set DOS16m=0 set DOS4GVM=deleteswap maxmem#8192 That's it! Thanks for your time and any help will be appreciated. Dominique -- If you have a problem and you are not doing anything to fix it, you are at the heart of the problem.
