GENERAL > HARDWARE/SYSTEMS DISCUSSION

DivIDE resets speccy :(

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sirmorris:
Hi all,

I'm looking at a rubber key Speccy 48k/divide combo owned by a colleague. Pressing the button results in the machine resetting, with no DiVide splash shown. Straight to the sinclair banner, no messing. I've tried the interface  on my trusty Spectrum+ and it works fine. So the problem is definitely with the original 48k which otherwise works fine.

Where should I start looking, d'you think?

Ta!

Charlie

Prime:
Dunno if this will help.

I seem to remember that there is a key combination that can be used to reset the DivIDE+, can't remember what it is off the top of my head maybe you need that.

Also it seems o be perticular about the filesystem on the CF, I thought the one I bought was broken cause I had the wrong type of fat on there, and it just wouldn't see anything on the card.

Another thought, is that DivIDE uses the NMI line, I seem to remember some spectrums have a dodgy Z80 that has a faulty NMI line. The solution for that of course is to swap the Z80 for a good one.
 
Cheers.

Phill.

sirmorris:
Thanks Phill,

Interestingly enough the speccy in question seems to have had a z80 replacement already... I wonder if there's some problem with links from the processor to the edge connector.

C

porchy:
Yeah, some of the older z80's didn't have the m1 line I think which the divide needs.
Also make sure you have the jumpers set correctly, the 48k and +2 use a different config

Prime:

--- Quote from: porchy on June 12, 2012, 04:47:54 PM ---Yeah, some of the older z80's didn't have the m1 line I think which the divide needs.
Also make sure you have the jumpers set correctly, the 48k and +2 use a different config

--- End quote ---

Ahhh that was it, the m1 line....
Would the 48k/+2 thing be down to the different edge connector pinout on the black +2 and +3?

Cheers

Phill.

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