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Forums > Requests > Looking for exotic disk drives, non-1541 clones
2013-03-09 11:49
Krill

Registered: Apr 2002
Posts: 2982
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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2013-04-03 10:31
The MeatBall

Registered: Dec 2001
Posts: 370
Quote: 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.) :)


Kill: I have a SFD-1001 and a IEEE interface (not sure it's mapped to $8000 tho), only issues is that it disables the IEC bus so how do I actually get the loader over on a SFD disk...
2013-04-03 23:45
Krill

Registered: Apr 2002
Posts: 2982
Quoting The MeatBall
only issues is that it disables the IEC bus

Which IEEE488 interface is that? Does it have DIP switches? Are you sure you cannot use serial and parallel devices at the same time?
2013-04-04 14:41
MagerValp

Registered: Dec 2001
Posts: 1078
Quote: Quoting The MeatBall
only issues is that it disables the IEC bus

Which IEEE488 interface is that? Does it have DIP switches? Are you sure you cannot use serial and parallel devices at the same time?


The official C= interface does that. You can get around it by replacing the ROM, I think Uz made a patched one.
2013-04-04 16:02
The MeatBall

Registered: Dec 2001
Posts: 370
Quote: Quoting The MeatBall
only issues is that it disables the IEC bus

Which IEEE488 interface is that? Does it have DIP switches? Are you sure you cannot use serial and parallel devices at the same time?


It's called C64 - IEEE by MSD, Inc.
Claims to be transparent and has a cartridge pass-thru, but I've not been able to use a cart with the interface, nor IEC devices.
2013-04-05 12:05
Krill

Registered: Apr 2002
Posts: 2982
Hum, then ZoomFloppy with IEEE-488 interface is currently the only option i see to get data onto an SFD disk.
2013-04-06 18:00
Exile

Registered: Dec 2002
Posts: 58
Willing to test the following

- Blue chip
- blue chip 128
- enhancer
- oceanic 501c
- dec (1541 clone)
- MSD 2
- probably some other i don't remember

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