Bridgeport Discovery 308 SX-15 CMOS lost time and settings
92 Bridgeport Discovery 308 SX-15 Control
Motherboard CMOS battery lost time and settings.
I replaced the 4 AA batteries in the FPU board with the machine off
I was in a panic, I know it should have been left on.
I knew how to do the executive load of the HEX file to the FMDC board. So I wasnít concerned.
I reset everything in the BIOS setup and rebooted machine. The machine failed the machine check, and then failed the executive load. In the past it would count up to around 500 while it loaded the FMDC . This time it did not count at all. It just failed in about 10 seconds.
I went back into the BIOS setup and everything was still correct.
It took a few dayís to get the new CMOS battery #DS1287 the motherboard is #WD286-LPM
The CMOS never lost time again in those few daysí. While I was trying to figure out what was wrong.
I replaced the battery and all the settings in BIOS and the machine still fails to load the FMDC.
I checked all the connections and wires for serial ports COM1 and COM2 . All past.
I went into DOS\MSD to look at the COM PORTS and they are not being detected. No matter what I do MODE, DEVICE etc. I canít find the com ports
I do not have a setting in my BIOS setup to enable or disable the COM or LPT ports.
I have a feeling that the POST at start up is disabling the ports. I have tried starting the machine with bypassing CONFIG.SYS and AUTOEXE and the ports are still not detected. I have found the IRQ addresses and they are not conflicting with others.
I had an extra WD286-LPM motherboard, so I changed it and I am still having the same problem. NO COM PORTS.
Any help would be very much appreciated .