Which BBC DFS
Which BBC DFS
Selling another of my BBC's and pondering whether to keep the 1770 that it currently has or swap it to an 8271 with and Acorn DFS 0.9
Which would you keep and why
Which would you keep and why
Re: Which BBC DFS
It's something of nothing really, but I always thought that the "definitive" setup for a Model B was the 8271 and Acorn DNFS 1.2, so that's what I'd keep if it were me.
Also, I would imagine that 8271's are a lot more expensive to get hold of than 1770s.
Also, I would imagine that 8271's are a lot more expensive to get hold of than 1770s.
Re: Which BBC DFS
0.9 is buggy. 1.2 is better. Personally I'd stick with the 1770 though - it's rather better behaved with 3.5" drives!
d.
d.
Re: Which BBC DFS
Don't have the rom image for DNFS 1.2 unfortunately... will have to source it
Re: Which BBC DFS
http://mdfs.net/System/ROMs/Filing/DNFS/
300 is the vanilla one, the others I think have slight tweaks to either fix a bug or fix the timing with 3.5" drives.
d.
300 is the vanilla one, the others I think have slight tweaks to either fix a bug or fix the timing with 3.5" drives.
d.
- CMcDougall
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Re: Which BBC DFS
I put the original 1.20 here many moons ago :
https://www.stairwaytohell.com/roms/homepage.html
https://www.stairwaytohell.com/roms/homepage.html
Re: Which BBC DFS
Thanks.. decided to leave the machine as it was with the 1770 in. Have ordered an EPROM eraser and once here i'll wipe some old Amcom e-net roms (as i've loads) and then burn the Acorn DNFS 1.2 onto one and another Disk Doctor onto another
Re: Which BBC DFS
I think you'll find that E-net is only 8K so will likely have loads of 2764's. Acorn DNFS 1.2 is 16K so will require a 27128. Disc Doctor is only 8K so you should be good for that.
- Nigel
BBC Model B: ATPL Sidewise, Acorn Speech, 2xWatford Floppy Drives, AMX Mouse, Viglen case, BeebZIF, etc.
BBC Model B: ATPL Sidewise, Acorn Speech, 2xWatford Floppy Drives, AMX Mouse, Viglen case, BeebZIF, etc.
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Re: Which BBC DFS
DFS1.2 won't work with a 8271FDC, so still require DFS2.26 (also 128/16k) if leaving the 1770FDC present
Re: Which BBC DFS
Decided to keep the 8271's and leave the 1770 in the machine that is going
So which versions of Acorn's DFS work with the 8271?
So which versions of Acorn's DFS work with the 8271?
Re: Which BBC DFS
I think you've got that the wrong way around: DFS 1.20 does work with the 8271 FDC.CMcDougall wrote: ↑Tue Jun 16, 2020 7:41 pm DFS1.2 won't work with a 8271FDC, so still require DFS2.26 (also 128/16k) if leaving the 1770FDC present
BBC Model B 32K issue 7, Sidewise ROM board with 16K RAM
Archimedes 420/1 upgraded to 4MB RAM, ZIDEFS with 512MB CF card
RiscPC 600 under repair
Acorn System 1 home-made replica
Archimedes 420/1 upgraded to 4MB RAM, ZIDEFS with 512MB CF card
RiscPC 600 under repair
Acorn System 1 home-made replica
- 1024MAK
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Re: Which BBC DFS
There is a nice summary of all the known DFS versions for the 1770 / 1772 floppy drive controller chips here. Or if you want more detail, use this.
Basically DFS 0.XX and DFS 1.XX are only for use with the 8271 FDC.
DFS 2.XX versions are only for use with the 1770 / 1772 FDC.
Mark
Basically DFS 0.XX and DFS 1.XX are only for use with the 8271 FDC.
DFS 2.XX versions are only for use with the 1770 / 1772 FDC.
Mark
For a "Complete BBC Games Archive" visit www.bbcmicro.co.uk NOW!
BeebWiki - for answers to many questions...
Fault finding index • Acorn BBC Model B minimal configuration • Logic Levels for 5V TTL Systems
BeebWiki - for answers to many questions...
Fault finding index • Acorn BBC Model B minimal configuration • Logic Levels for 5V TTL Systems
Re: Which BBC DFS
Curiously, the first linked article skips over all the 1.x versions1024MAK wrote: ↑Wed Jun 17, 2020 10:44 am There is a nice summary of all the known DFS versions for the 1770 / 1772 floppy drive controller chips here. Or if you want more detail, use this.
Basically DFS 0.XX and DFS 1.XX are only for use with the 8271 FDC.
DFS 2.XX versions are only for use with the 1770 / 1772 FDC.
Mark
BBC Model B 32K issue 7, Sidewise ROM board with 16K RAM
Archimedes 420/1 upgraded to 4MB RAM, ZIDEFS with 512MB CF card
RiscPC 600 under repair
Acorn System 1 home-made replica
Archimedes 420/1 upgraded to 4MB RAM, ZIDEFS with 512MB CF card
RiscPC 600 under repair
Acorn System 1 home-made replica
- CMcDougall
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Re: Which BBC DFS
think you've not read this thread properlyKazzie wrote: ↑Wed Jun 17, 2020 9:16 amI think you've got that the wrong way around: DFS 1.20 does work with the 8271 FDC.CMcDougall wrote: ↑Tue Jun 16, 2020 7:41 pm DFS1.2 won't work with a 8271FDC, so still require DFS2.26 (also 128/16k) if leaving the 1770FDC present
ee668 said he is keeping 1770 & burning 1.20
EDIT: ahhh, useless mobile word predicktion txt has changed will not to /won't
Re: Which BBC DFS
What I meant is that the machine i'm selling will stay with the 1770 I got it with.. I was going to change it to an 8271 + Acorn 0.9 DFS which I have lying around as spare and keep the 1770 as I don't have one of those. However I've decided the machine will retain the 1770 that it currently has