Reply 120 of 125, by jms2
I feel like I'm making some progress! 😀
Firstly, using Ctrl-Alt-Shift-Del to enter Extended Setup works! It's great to see this back again, as I thought I had broken something...
Secondly, my battery is definitely delivering 3V from the daughterboard onto the riser card. There is also a jumper fitted to the riser card, which I believe is necessary to connect up the battery. So I still don't understand why I get the flashing battery symbol, but I'm as sure as I can be that this bit is working OK.
Third - switching the floppy drive off and on again in Extended Setup has got it working again, just as you said it would. I can now boot into DOS (from the floppy) again!
I still don't really understand what the difference is between the Basic and Extended Setup screens. I can see the Extended screen has more options, but I can't really figure out why they didn't just go with one comprehensive screen! Also there are some strange differences:
- In the Basic setup screen, the time and date are shown as not set. However, if I go into Extended Setup they appear (and seem to be retained correctly after switchoff).
- In the Basic setup screen, the floppy drive is shown as "Y" and I can even set the drive size (which I assume is 1.44MB). But in the Extended screen the floppy setting is blank, and I can't alter it.
- The Hard Disc is kind of the reverse of the above. On the Basic Screen it just says "Y". On the Extended screen is says "Y - 1 040MB" which I think shows it has auto-detected the right size (I don't seem to be able to change it). However, on boot I still get "Not present" for the hard disc.
At the end of the boot sequence it still reports "Configuration error" but it's not clear what the error is. I wonder if the CMOS chip is actually damaged? Does anyone know what type it is (or where it is?)