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8-bit acorn hardware • Re: Another BBC Master 128 Bad-Boot

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0
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As in:

Set Station number = 10
FS 0.254
PS 0.235

Am I missing something?

Best Regards,
Stewart.
OK so you have the station ID, fileserver and printserver set in the CMOS? *STATUS and see what you've got.

If you issue the *FS 0.254 the machine will connect to the network, if you've still got a stuck low NMI the machine will not be able to continue as it will be spending all its time going around in a circle NMI->do some work->return back to program->NMI... ad infinitum

From experience, I would suggest tracing NMI from the processor to the various places it pops up;

Pin#6 on the 65SC12/IC14, 1MHz Bus, pin#14 on NJ259/IC15, pin#12 on both cartridge ports and pin #1 of SK5.

Also worth checking that DRQ (pin#6) and INTRQ (pin#5) on IC15 are normal when accessing a floppy in 1770 DFS mode as they can make the NMI output of IC15 get stuck low.

Statistics: Posted by maniacminer — Sat Feb 22, 2025 11:24 pm



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