[COLUG] Dosbox serial ports Dosemu

charles morrison charlie2 at ledgible.com
Wed Dec 5 16:17:42 EST 2007


/It is not really hard to setup dosemu.   I've used it with a couple of apps
that make use of serial devices both normal and usb based.  Like you said,
for non-game apps it is the better choice.

Pat/
/
/I decided to try Dosemu since it had a configuration file which would allow me to set up the com port of my choice, used as COM1/2.

Dosemu recognises the com port but nothing goes out the port.

I have modified my udev file to detect when this USB to serial cable is inserted, and renamed the port as COM1. When the renaming occurs the 
port is configured as:

crw-rw---- 1 root   dialout 188,   0 2007-12-05 15:37 COM1

When Dosemu starts, it recognises this port. I can tell because I set COM2 to the same port and Dosemu said that the port was already in use for COM2 and refused to use it. I also get a message when I set it to an invalid port which states the port is not present. On COM1, I get no error message, which says to me that Dosemu recognised the port and that the port is a good one.

Still, I get no blinky lights on my port and my program which is set up to be full duplex thinks it is getting an echo back from a device which is not connected. I have shorted pins 8-9 which are the CTS and RTS pins to make sure handshaking is not a problem.

I have played with the udev file to set other groups and permissions, and anything other than the above causes an error message, such as permission denied.

I really believe I am minutes from having this thing working, but need some ideas on what I can try next, with Dosemu.

Charlie Morrison

-- 
Charlie Morrison
American LED-gible, Inc
1776 Lone Eagle Street
Columbus, OH  43228  USA
614-851-1100
FAX  614-851-1121
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