Mod or hardware to use DF1 as DF0 on A600?

Photon · 14 January 2011, 00:27

Had a look at Amigakit and didn't find any. Something like the jumper on the ACA630, so you don't have to have an internal floppy but still boot and use "as if df1: was df0:". But I need to do it on 68000 (accelerator off, so jumper has no function). So I need something for the motherboard.

Possible at all? Has someone done it? How? I can solder and make PCBs.

rkauer · 14 January 2011, 01:23

Completely possible, but you have to have good solder skills to invert the two CIA traces to route DF1 to internal header and df0 to outer side.

Photon · 14 January 2011, 11:33

So find DF1/DF0 SEL pins on CIA, cut both, make new traces by soldering from CIA-pins to ext floppy port and int floppy port?

(Or use thin wire and cut traces at floppy-ports and solder wire to trace)

Is that really all you have to do?

Jope · 14 January 2011, 12:03

That is all, yes.

mfilos · 14 January 2011, 12:09

I made a thread about it in Amibay some time ago (but a thread with this info already exists in EAB as well...)
Anyway check out the things you need to do:

- Cut the traces from mobo of Pins 15 and 16 (yellow line)
- Wire the Pin 15 to External drive's connector Pin 11
- Wire the Pin 16 to External drive's connector Pin 9

Photon · 14 January 2011, 13:47

Okiday, I will do this mod then.

Will my internal floppy terminator terminate DF1 then, or will the system not even look for DF1 since internal floppy-port is unconnected? <-- (Just trying to avoid the system looking for a DF1 inside the A600 on every boot after I do this mod

)

mfilos · 14 January 2011, 15:36

I can't answer that with certainty mate. I got most advices by Rkauer who knows some shiz about it.
You can check the full thread @ Amibay here: http://www.amibay.com/showthread.php?t=5648

rkauer · 15 January 2011, 04:08

System will not try to locate DF1 if no streaming signal comes from outside connector, so the Amiga will boot in no time, as always.

orange · 15 January 2011, 16:33

I'd rather hack the short df0 floppy cable than use traces on motherboard.

Photon · 15 January 2011, 18:33

Actually since I need to open the A600 again, I think I'll have a look-see if I can put the DF0 back in, now that the DC-DC adapter that was inside has been replaced with an external PSU.

Or maybe even a floppy emulator, are there any good ones? I really don't know anything about them or how (well) they work.

14 January 2011, 00:27	#1
Photon Moderator Join Date: Nov 2004 Location: Eksjö / Sweden Posts: 5,602	Mod or hardware to use DF1 as DF0 on A600? Had a look at Amigakit and didn't find any. Something like the jumper on the ACA630, so you don't have to have an internal floppy but still boot and use "as if df1: was df0:". But I need to do it on 68000 (accelerator off, so jumper has no function). So I need something for the motherboard. Possible at all? Has someone done it? How? I can solder and make PCBs.

15 January 2011, 16:33	#9
orange Registered User Join Date: Apr 2007 Location: Belgrade Posts: 567	I'd rather hack the short df0 floppy cable than use traces on motherboard. Last edited by orange; 15 January 2011 at 16:40.

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14 January 2011, 01:23	#2
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	Completely possible, but you have to have good solder skills to invert the two CIA traces to route DF1 to internal header and df0 to outer side.

14 January 2011, 11:33	#3
Photon Moderator Join Date: Nov 2004 Location: Eksjö / Sweden Posts: 5,602	So find DF1/DF0 SEL pins on CIA, cut both, make new traces by soldering from CIA-pins to ext floppy port and int floppy port? (Or use thin wire and cut traces at floppy-ports and solder wire to trace) Is that really all you have to do?

14 January 2011, 12:03	#4
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	That is all, yes.

14 January 2011, 12:09	#5
mfilos Paranoid Amigoid Join Date: Mar 2008 Location: Athens/Greece Age: 45 Posts: 1,978	I made a thread about it in Amibay some time ago (but a thread with this info already exists in EAB as well...) Anyway check out the things you need to do: - Cut the traces from mobo of Pins 15 and 16 (yellow line) - Wire the Pin 15 to External drive's connector Pin 11 - Wire the Pin 16 to External drive's connector Pin 9

14 January 2011, 13:47	#6
Photon Moderator Join Date: Nov 2004 Location: Eksjö / Sweden Posts: 5,602	Okiday, I will do this mod then. Will my internal floppy terminator terminate DF1 then, or will the system not even look for DF1 since internal floppy-port is unconnected? <-- (Just trying to avoid the system looking for a DF1 inside the A600 on every boot after I do this mod )

14 January 2011, 15:36	#7
mfilos Paranoid Amigoid Join Date: Mar 2008 Location: Athens/Greece Age: 45 Posts: 1,978	I can't answer that with certainty mate. I got most advices by Rkauer who knows some shiz about it. You can check the full thread @ Amibay here: http://www.amibay.com/showthread.php?t=5648

15 January 2011, 04:08	#8
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	System will not try to locate DF1 if no streaming signal comes from outside connector, so the Amiga will boot in no time, as always.

15 January 2011, 18:33	#10
Photon Moderator Join Date: Nov 2004 Location: Eksjö / Sweden Posts: 5,602	Actually since I need to open the A600 again, I think I'll have a look-see if I can put the DF0 back in, now that the DC-DC adapter that was inside has been replaced with an external PSU. Or maybe even a floppy emulator, are there any good ones? I really don't know anything about them or how (well) they work.

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