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Serial Port Twilight Zone

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Aristarco

Programmer
Jun 19, 2000
77
MX
I got a PC Clone from the thrash and found it working perfectly. It's a TI 486SLC33, 4MB RAM and 270MB HDD with MSDOS 6.22 installed. I added a program to work with a serial Microcontroller programer for embedded design. The program says the device is not found at COM1, So I changed to COM2 and didn't work either.<br>I thought the ports were damaged, so I changed the serial card. Nothing worked. I changed Motherboard 3 times (i486, Cyrix586, AMD K5), but not to avail. I changed HDD and booted Win95, Win98, nothing. The only thing that remains from the original &quot;Rescued&quot; PC is the metal case and the Power Supply. But I checked out voltages and the don't lower when loaded (PC turned on). What's going on? Of course I tested the device in lots of computers and it always worked fine. Did I get Gremlins? Does that PC belong to the twilight zone? Is the device angry cause I connected it to a less-than-Pentium system?<br>Help!
 
The cables from the serial card to the PC chassis, are they new ones or the original ones that the 486 came with? <p>Clive<br><a href=mailto:clive@digitalsky.co.za>clive@digitalsky.co.za</a><br><a href= > </a><br>I assemble and sell these things.
 
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