Thanks BeebMaster, it would be good if we could sort something out. I'd like to know if my boards do actually work and I think Ian is keen to get his system working quickly.
Can you mount an LV-ROM disc in VFS and catalogue it? If you can autoboot and get the "Domesday system starting" message and then the introductory video then it must mean that VFS and the SCSI interface are working. I can't see why the introductory video would freeze, as it's set to play from the beginning up to about frame 1200 on the Community Disc, which is the main UK map, or about frame 800 on the National Disc which is the starting point in the Domesday Gallery.
There don't seem to be any problems cataloging the discs or booting from them, I think the video gets to the end where the micro should then take over and do something rather than simply freezing. I'd been using the National disk as the intro is a bit shorter but the Community disk responds in the same way. At some point after booting, before the video stops, the Shift lock and Caps lock LEDs stop responding to the keys.
It could be a glitch on the disc, does the starting sequence play straight through if you put in the disc and close the tray without the BBC switched on?
The auto play is off, the video only starts playing after a Shift Break. Before the SCSI interface I have played the discs on their own but it's not something you'd want to watch for long!
You can press ESCAPE during the video to skip it, that might be a way of missing out the problem area.
That doesn't seem to get me any further.
If it looks like a problem with the co-processor, you don't necessarily need the internal 65C102 co-pro if you can't find a spare; the Domesday System will work equally well with an external cheese wedge.
Yes, I'd seen that on your site. I've been keeping an eye on ebay for Co-Pros but the prices they've been going for recently are a bit more than I can really justify - I've got more than enough old computers that I really should make more use of
When the Master is configured to run with the internal Co-Pro it's always been a bit tricky to get it to boot, it's as if it needs to warm up a bit. As it's done this since I got it so it didn't initially occur that this was the problem. I started looking for problems in the SCSI board before having one of those D'oh moments! I did find the service guide for it (or its cheese wedge cousin) but haven't been through it yet.