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Krill
Registered: Apr 2002
Posts: 2980 |
Looking for exotic disk drives, non-1541 clones
Hi,
i am looking for third-party C-64 5.25" serial bus disk drives that are exceptionally incompatible with existing fast loaders due to their not being 1541 clones. They come with very different ROM code, register and memory layout, peripheral ICs and even processors.
Specifically, these are
MSD SD-1 and SD-2
Digilog FD 2064 and 2064/2
Tecmate NPH-501C with a firmware reporting as "Century Planning Corp. CX-500"
If you have these or other such devices i am not aware of, please tell.
Willing to trade, but remote code testing and debug sessions are welcome, too.
Thanks! |
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TheRyk
Registered: Mar 2009
Posts: 2246 |
Hey Krill. Did you talk to Thunder.Bird or Evil.Joe at BCC#7 about those drives? They might rifle through BCC hardware stash. |
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Thunder.Bird
Registered: Nov 2003
Posts: 110 |
Quoting Krill...
MSD SD-1 and SD-2
Digilog FD 2064 and 2064/2
Tecmate NPH-501C with a firmware reporting as "Century Planning Corp. CX-500"
...
We own some Oceanic OC-118, but I assume you own one yourself.
What about IDE64-testing or RetroReplay, IECATA, SFD1001? |
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WVL
Registered: Mar 2002
Posts: 902 |
If these drives are almost impossible to find, is it really worthwhile to support them in your loaders or are you only into it for academic reasons? :) |
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chatGPZ
Registered: Dec 2001
Posts: 11386 |
very good question indeed. i just hope support for these will not bloat the loader even more, its already hard to resist and not clean it up =P |
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HCL
Registered: Feb 2003
Posts: 728 |
I have a Digilog <something>, but it is *mostly* compatible with common loaders. What i have found is that it can not do SAX instructions. Also Graham's WarpCopy can not write disks with that drive, perhaps he is using SAX, don't know.
..but i'll check what number it has. |
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Twoflower
Registered: Jan 2002
Posts: 434 |
I had a strange double diskdrive from Xetec which also worked with most loaders at the time (1996-97?) - but far from all. I gave that one away to Mitch/Crest. Would be fun to see a complete list of all these clones and their compatibility. |
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MagerValp
Registered: Dec 2001
Posts: 1078 |
It'd be interesting to see them added to VICE and emulated.
I have an MSD SD-2 up in the attic packed away in a somewhere... |
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chatGPZ
Registered: Dec 2001
Posts: 11386 |
Quote:It'd be interesting to see them added to VICE and emulated.
lets first emulate 1541 correctly =) |
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Norrland
Registered: Aug 2011
Posts: 14 |
I also have a crappy digilog (it was a tough childhood, since all other kids had their fastloader-compatible 1541). I'll dig into my old boxes and try to find what model it is, will gladly run some tests on it if that helps you. |
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Krill
Registered: Apr 2002
Posts: 2980 |
TheRyk: No, haven't. Thanks for the tip.
Thunder.Bird: SFD-1001 is supported under certain conditions (via KERNAL fallback, and test tool needs IEEE-488 interface mapped to $8000, iirc). Tested in VICE but not the real thing yet.
WVL: At the moment, mainly academic. I won't waste much time on supporting those drives before the important ones (1551...) work fine.
Groepaz: Stop this bloat talk already. You know perfectly well that it can be configured down to a whopping resident 256 bytes in the minimal setup. And nobody cares how big the installer with the drive code is, really.
HCL: Yeah, we talked about it already. Good i never used SAX on the serial bus registers. :) Bad a few new ideas of mine rely on that.
Magervalp: Yes, i was thinking of emulation, too. The MSDs are the most interesting drives, with that Rockwell R6511q controller.
Groepaz: And yes, you have a point there.
H Macaroni: Thanks! Tell me when you've found it. The ROM dump i have here suggests that they have saved a VIA by using some discrete logic chips, but the thing didn't come with schematics by any chance? (Some hi-res pics of the insides would rock, though.) :) |
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