Schematics Collection! - Page 2

Jope · 17 April 2008, 11:59

Wow, that's handy. Too bad I don't have any mobos that are that recent.. An A500 kbd indeed plugs in directly if you solder in a pin strip first.

Zetr0 · 26 April 2008, 15:28

Would that header completely bypass the KB controller?

this would allow for multi timbre playing with octamed like the A500 and A600.

(as playing on the A1200 *even with keyboard adapter*) would not be able to play a chord...

BippyM · 26 April 2008, 16:02

Keep this up guys, soon we'll be rebuilding Amiga's and upgraded Amiga's too from scratch

Jope · 26 April 2008, 21:41

Quote:

Originally Posted by Zetr0

Would that header completely bypass the KB controller?

this would allow for multi timbre playing with octamed like the A500 and A600.

Well co-exist anyway. Sometimes the A1200 keyboard mpu will hog the bus and it's clock and data lines need to be disconnected before adding another controller.

Quote:

Originally Posted by Zetr0

(as playing on the A1200 *even with keyboard adapter*) would not be able to play a chord...

If the adapter lugs in the keyboard ribbon connector, then naturally it won't. If it clips over the CIA, then it would unless they've messed it up or if you use a ps2 keyboard that can't handle multiple presses properly.

ws1968 · 16 May 2008, 15:53

I want to apply this hack to my A1200. Can you make a picture of your mod?

Quote:

Originally Posted by Zetr0

welcome to have them oddbod

heres another one i made for my a600+ project *i actualy decoupled the ports and then rewired my own using this simple mixer. its nice to listern to CD's on the A600 *James Brown all the way!* lol (and yes before you ask, i was playing along in Medstudio... kinda lol)

as a personal note (i really need to take more pictures of the re-modding i have dont to that... lol)

heres a simple internal Audio Mixer for the A600 / A1200

(click to enlarge)

08 August 2008, 03:25

Mmmm, just looking at these schematics is making me want to modify something.

Excellent resource.

@Zetro, yes I got your FPU and cable. I tried the FPU but the same negative results as my PGA FPU. So one can only assume the accelerator is not designed to accept this upgrade. - Will post back shorty.

Soz for the delay, haven't had much play-time lately, building a new kitchen.

http://www.imdb.com/title/tt0392878/ (The Onion Movie)

"Cocker Puncher! I don't think you have the balls!"

[ Show youtube player ]

Zetr0 · 16 August 2010, 14:08

Could this be added to this thread ?

I posted this a while back (and I am no stranger to pimpin more hardware pr0n)

rkauer · 17 August 2010, 04:52

My friend, one of the NC pads actually is the reset line!

Jope · 17 August 2010, 09:07

So you mean there's two resets in there?

rkauer · 17 August 2010, 20:39

Nope, just one. But I need to have another 2B here to check again, my units are both 1D1 ATM.

Anyway, it is an easy check: run a grounded wire to the pads with the Amiga on. If it resets, then you found the spot. Be careful to not ground any other pad (except the ground one, of course).

Loedown · 17 August 2010, 23:24

Quote:

Originally Posted by rkauer

Nope, just one. But I need to have another 2B here to check again, my units are both 1D1 ATM.

Anyway, it is an easy check: run a grounded wire to the pads with the Amiga on. If it resets, then you found the spot. Be careful to not ground any other pad (except the ground one, of course).

Wouldn't you do a continuity test instead and not risk blowing something up?

Jope · 19 August 2010, 11:24

The Amiga resetting itself does not always mean that the pin you grounded is a reset pin. Maybe take a more scientific approach to it and look at the motherboard traces.. :-)

Zetr0 · 19 August 2010, 15:03

Quote:

Originally Posted by rkauer

My friend, one of the NC pads actually is the reset line!

Would this be similar rest on TP1 [pin 3] i think, thats a reset point - if so I might be able to buzz-it out from that... I have a 2B here and handy... one sec.

Zetr0 · 19 August 2010, 16:28

Okay tests done

Pin 5/7 is not connected to anything
pin 4/7 is connected to "U49" D3F7 and a 10k Resistor with a .33uf Cap to ground,

I would say this is certainly another reset, although this might only reset the Keyboard MPU??

Anyway all buzzed out and confirmed with the rev2b schema's - heres a schematic since we are here =)

thats should sove it =)

gibs · 06 December 2010, 15:16

Where the collection has moved ?

Zetr0 · 06 December 2010, 18:45

@gibs

guildserver.co.uk is down at the moment (host is playing silly buggers) but please bare with me, been suffing a fair bit of winter buggy nastyness - will get this sorted this week.

Jope · 10 March 2011, 20:55

Any news when this will be back up again?

Stedy · 13 June 2011, 01:04

Have been meaning to contribute to this thread for some time so here goes.

Both PCBs are simple enough to be made at home as they are single sided, with some wire-links.

The first is a very simple PCB to allow you to easily connect the LEDs of a tower case to the A600/A1200 LED connector.

You have to reverse the orientation for the A600 but it works.

Full design package, here:
http://www.ianstedman.co.uk/downloads/Power_LEDs.zip

The second design is one many of you have bought, my V2 floppy drive adaptor. This is a slightly tweaked design, it can accept a right angle power connector, works as DF0:/DF1: and has a corrected FDD pinout.

The full design package is here, http://www.ianstedman.co.uk/downloads/Floppy.zip

Will release some more soon once I tidy things up. All new designs will be released under a creative commons license.

Ian

jjsaenz1969 · 31 December 2013, 01:07

Hi Zetr0.
All the pics are down. please can you upload again?.
Thanks.

bugsymalone666 · 23 November 2014, 20:13

Quote:

Originally Posted by jjsaenz1969

Hi Zetr0.
All the pics are down. please can you upload again?.
Thanks.

I cant see them now either

Seems such a pain that such valuable info is lost to every because of server hosting.

16 August 2010, 14:08	#27
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 49 Posts: 9,768	Could this be added to this thread ? I posted this a while back (and I am no stranger to pimpin more hardware pr0n) Last edited by Jope; 16 August 2010 at 16:20.

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17 April 2008, 11:59	#21
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	Wow, that's handy. Too bad I don't have any mobos that are that recent.. An A500 kbd indeed plugs in directly if you solder in a pin strip first.

26 April 2008, 15:28	#22
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 49 Posts: 9,768	Would that header completely bypass the KB controller? this would allow for multi timbre playing with octamed like the A500 and A600. (as playing on the A1200 even with keyboard adapter) would not be able to play a chord...

26 April 2008, 16:02	#23
BippyM Global Moderator Join Date: Nov 2001 Location: Derby, UK Age: 48 Posts: 9,355	Keep this up guys, soon we'll be rebuilding Amiga's and upgraded Amiga's too from scratch

08 August 2008, 03:25	#26
SkippyAR Posts: n/a	Mmmm, just looking at these schematics is making me want to modify something. Excellent resource. @Zetro, yes I got your FPU and cable. I tried the FPU but the same negative results as my PGA FPU. So one can only assume the accelerator is not designed to accept this upgrade. - Will post back shorty. Soz for the delay, haven't had much play-time lately, building a new kitchen. http://www.imdb.com/title/tt0392878/ (The Onion Movie) "Cocker Puncher! I don't think you have the balls!" [ Show youtube player ]

17 August 2010, 04:52	#28
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	My friend, one of the NC pads actually is the reset line!

17 August 2010, 09:07	#29
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	So you mean there's two resets in there?

17 August 2010, 20:39	#30
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	Nope, just one. But I need to have another 2B here to check again, my units are both 1D1 ATM. Anyway, it is an easy check: run a grounded wire to the pads with the Amiga on. If it resets, then you found the spot. Be careful to not ground any other pad (except the ground one, of course).

19 August 2010, 11:24	#32
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	The Amiga resetting itself does not always mean that the pin you grounded is a reset pin. Maybe take a more scientific approach to it and look at the motherboard traces.. :-)

19 August 2010, 16:28	#34
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 49 Posts: 9,768	Okay tests done Pin 5/7 is not connected to anything pin 4/7 is connected to "U49" D3F7 and a 10k Resistor with a .33uf Cap to ground, I would say this is certainly another reset, although this might only reset the Keyboard MPU?? Anyway all buzzed out and confirmed with the rev2b schema's - heres a schematic since we are here =) thats should sove it =)

06 December 2010, 15:16	#35
gibs Banned Join Date: Jan 2010 Location: france Posts: 932	Where the collection has moved ?

06 December 2010, 18:45	#36
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 49 Posts: 9,768	@gibs guildserver.co.uk is down at the moment (host is playing silly buggers) but please bare with me, been suffing a fair bit of winter buggy nastyness - will get this sorted this week.

10 March 2011, 20:55	#37
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	Any news when this will be back up again?

13 June 2011, 01:04	#38
Stedy Registered User Join Date: Jan 2008 Location: United Kingdom Age: 46 Posts: 733	Have been meaning to contribute to this thread for some time so here goes. Both PCBs are simple enough to be made at home as they are single sided, with some wire-links. The first is a very simple PCB to allow you to easily connect the LEDs of a tower case to the A600/A1200 LED connector. You have to reverse the orientation for the A600 but it works. Full design package, here: http://www.ianstedman.co.uk/downloads/Power_LEDs.zip The second design is one many of you have bought, my V2 floppy drive adaptor. This is a slightly tweaked design, it can accept a right angle power connector, works as DF0:/DF1: and has a corrected FDD pinout. The full design package is here, http://www.ianstedman.co.uk/downloads/Floppy.zip Will release some more soon once I tidy things up. All new designs will be released under a creative commons license. Ian

31 December 2013, 01:07	#39
jjsaenz1969 Registered User Join Date: Dec 2013 Location: Vitoria-Spain Posts: 16	Hi Zetr0. All the pics are down. please can you upload again?. Thanks.

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