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| Thread ID: 34363 | 2003-06-10 22:03:00 | Serial mice not working | rmcb (164) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 151697 | 2003-06-10 22:03:00 | Got some socket 7 motherboard´s (jetway j-646c) but the serial mouse won´t work. Have checked the mouse and the mouse to motherboard cable, and all are ok.(work on another machine). Have used both serial connections on the board and both are enabled in the bios, but still no go. Have 7 of these boards and they are all the same. I suspect a jumper setting or perhaps some bios setting?? A ps2 mouse and connector work straight away. A floppy based Linux distro has no mouse either so I don´t think it is a software problem. Ideas please. Thanks |
rmcb (164) | ||
| 151698 | 2003-06-11 00:03:00 | At a guess, I would say the serial ports on those mobos are not capable of delivering enough current to power the mouse. RS-232 was designed to operate into relatively high impedance loads (around 7K from memory) - it wasn't meant to power ancillary devices. It may be that the ports you have are adequate for connecting to comms devices, where the current demand on the port is not as high as the mouse. You may be able to find a mouse with lower current demands, that would work in your situation. :| | wuppo (41) | ||
| 151699 | 2003-06-11 01:30:00 | Is your mouse one of the eunuch models, with glowing red LEDs instead of a ball? One of the old style mice would probably need much less current. | Graham L (2) | ||
| 151700 | 2003-06-11 02:28:00 | Thanks I have used 2 different standard ball type mouse (mouses?) but neither work. Is there any way of testing the com ports are working?. External modem perhaps?? |
rmcb (164) | ||
| 151701 | 2003-06-11 03:21:00 | Yes, an external modem will talk a lot to a terminal emulator. Just type "AT",(then <return>) and it should say "OK". Then there are the status query commands (a search in Google with "hayes commands" will find them.) I'd think that just about any port will run a standard mouse, but the LEDs of an optical mouse cause them to be marked '5v, 100 mA" on the one right here (which is a USB one). 100 mA would "test' a serial line. :D |
Graham L (2) | ||
| 151702 | 2003-06-11 06:22:00 | A nice one for external modem which gives a lot of info back is AT&V | Pheonix (280) | ||
| 151703 | 2003-06-13 09:02:00 | Got it working. There are 2 kinds of motherboard to mouse connector, type a & b. My boards needed an a and of course Ionly had b´s. |
rmcb (164) | ||
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