OS/2, eCS & ArcaOS - Technical > Hardware
USBCOM big problem
Igor:
I spent some money (thanks to the Chinese industry) and a lot of time.
It turned out that the work of USBCOM is seriously broken.
Of the three different devices that I checked, only PL2303 is recognized and only on USB16 drivers.
But he does not work either.
PL2303 in USB32 is not identified by the system. Checked with USBCOM and USBSER drivers.
If you put the driver from USB16, then you can configure the port.
However, the device only works on receiving information.
Sending does not work.
If someone works for someone, please indicate which version of the drivers this can be launched.
Dave Yeo:
There seems to be different PL2303 chips. I had a USB/Serial Modem that was actually a Serial modem with a PL2303 chip. At first it didn't work with any of the drivers that were available, then David A. updated his drivers (this was before AracaOS) and it worked. I worked with Lars trying to get his driver package to work and never did succeed.
Whether it would work with the latest from ArcaOS, I have no idea as I no longer have a phone line.
Andi B.:
12.14 driver packages fixed PL2303 devices for me. From the ticket -
--- Quote ---> /Z is normally needed if you don't have RTS/CTS wired.
So I misunderstood the usbcom.txt - '/Z Forces CTS handshaking and forces DSR and CTS on.'. 'Forces handshaking' sounds to me like I need CTS active driven from the link partner. I would call left unconnected CTS/RTS/DSR/DTR as 'no hardware handshake' or 'ignoring hardware handshake lines'.
--- End quote ---
And since then my config.sys look this for up to four devices. Mind before I needed 4 lines which are remed out here. Now only one USBCOM.SYS handles all up to four devices. HTH
--- Code: ---REM ! DEVICE=P:\util\USBCOM_PL2303\usbcom.sys /V /M:1 /N:COM5 /Z
REM ! DEVICE=P:\util\USBCOM_PL2303\usbcom.sys /V /M:1 /N:COM6 /Z
REM ! DEVICE=P:\util\USBCOM_PL2303\usbcom.sys /V /M:1 /N:COM7 /Z
REM ! DEVICE=P:\util\USBCOM_PL2303\usbcom.sys /V /M:1 /N:COM8 /Z
REM ! DEVICE=M:\OS2\BOOT\USBCOM.SYS
DEVICE=M:\OS2\BOOT\USBCOM.SYS /M:4 /N:COM6 /Z
--- End code ---
In another ticket I found someone needed /DCD parameter to get a device to work. The documentation for this was (is) misleading (wrong) on this too. (ticket 3485 for those with access)
Igor:
Thank you very much, ALL!
I installed USBCOM from the USB 10.250 package from Lars Erdmann with /Z key
It worked.
The USBCOM 12.16 driver from Arca Noae does not see my device:
Bus 001 Device 004: ID 067b: 2303 Prolific Technology, Inc. PL2303 Serial Port / Mobile Action Ma-8910p
Also, they are not recognized any of the drivers and do not work:
Bus 001 Device 005: ID 0403: 6001 Future Technology Devices International, Ltd FT232 Serial (UART) IC
Bus 001 Device 005: ID 1A86: 7523 Qinheng Electronics CH340 Serial Converter
Lars:
For the "Future Technology" device you should try USBSER.SYS instead of USBCOM.SYS.
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