The ReAmiga 1200 Rev 1.0 - Page 3

Mr.Flibble · 28 September 2018, 09:13

Just waiting on some fresh components before I make a start

Chucky · 13 October 2018, 21:51

http://www.hertell.nu/webfiles/ReAmiga1200Rev12.zip

Rev 1.2: At composite 0ohm jumpers. R62 NTSC Location was connected to ground and should ACTUALLT be connected to
RGB port (23pin) pin 15. no idea why this fuckup was. Corrected here.. so earlier versions of board
and if you want composite/svideo in NTSC middle pad of R62 shold be connected to RGB Pin 15 instead of a
jumper. PAL Is not affected

IF using a VideoDAC that requires a Zenerdiode, I have now connected the R215 Correctly (was wrong on older
versions not connected to +5V. so you must put a 1K resistor here if that DAC is used. on older rev.
you need to connect the 1K resistor on RIGHT pad of C215 and to +5V (like top pin of D233A)

Added Kickstartswitch functionality,. if you are using 27C800 proms. you can program one bank with one
kickstart and the other bank with another. if R6A (bottom side of board) is set to ENA. the jumper can
select the active bank. High/low with moving a jumper or a switch. (or a pic controller of your choise)
if R6A is set to DIS, the A18 signal is handled as on any Amiga.
to make some kind of PIC for this controlled by joystick fire or mouse left. FIR0 and FIR1 have been equipped
with a TH hole for soldering a wire there.

On older rev. you needed to do a slight solderblob at the pads close to U10 (between it and the FPU location)
this is now a trace. Trace is visible so if you need another "strange" budgie configuration, just cut that
trace and do your stuff.

Mick · 20 October 2018, 13:26

Have you had any feedback about your clone PCB yet?

Chucky · 20 October 2018, 17:16

well I still have to see someoe who soldered their board but yes I get alot of positive comments..

and well maybe 1 or 2 that say "Better to repair the existing board"

Mick · 20 October 2018, 18:19

Alright, I just wondered if you'd had anyone confirm that they work as I saw some on Ebay.

AJCopland · 20 October 2018, 19:01

I was wondering if you'd seen this Chucky http://www.amigaclub.be/projects/amiga1200plus
I wonder why he moved the ram onto a daughter board?

Chucky · 20 October 2018, 23:53

yes. I have some talks with him.

daughterboard.. well. devboard so.. I should also do that

malko · 21 October 2018, 00:34

Quote:

Originally Posted by Chucky

IT IS TIME!
The ReAmiga 1200 Rev 1.0

http://wordpress.hertell.nu/?p=587

Help with componentlocation: http://www.hertell.nu/locator/locator.php?project=r1200

Chucky, I am in awe !

Beautiful work !

Chucky · 23 October 2018, 20:16

Added an important note to my post about ReAmiga 1200:

If you are moving from a 2B board, first of all. you need new memorymodules.

BUT you also need to reprogram the GAL. you need to have the 1D.x code for XU9 location not the XU1 location GAL (same physical place but different name) code is in the R1200 archive.

http://wordpress.hertell.nu/?p=618

Mick · 27 November 2018, 15:48

What filters are you using for the power? they aren't mentioned in the BOM.

Chucky · 30 November 2018, 08:44

As I did this as a replacement pcb to move components from a bad 1200 to this. I have not really checked that out.

Mick · 30 November 2018, 19:57

Ah ok no worries. It's just your latest article says you are using NOS parts so I wondered what you were using.

Does anyone know any suitable substitutes for the originals?

All I can find about the original ones are this. TDK ZBF503AR-00TA?

It appears the boards used either a single coil or 2 small/2 large ferrite beads but you used 4 of the same size in your article? I suppose that's the same as the single coil.

Chucky · 25 December 2018, 22:44

http://wordpress.hertell.nu/?p=710

Did a Errata post. read this before soldering.

Chucky · 26 December 2018, 22:12

Did a Build-guide for the ReAmiga:

http://wordpress.hertell.nu/?p=712
http://wordpress.hertell.nu/?p=735
http://wordpress.hertell.nu/?p=750
http://wordpress.hertell.nu/?p=781

Casper · 23 February 2019, 11:29

Quote:

Originally Posted by Chucky

IT IS TIME!
The ReAmiga 1200 Rev 1.0

http://wordpress.hertell.nu/?p=587

Help with componentlocation: http://www.hertell.nu/locator/locator.php?project=r1200

Hi Chucky,

I've just came across this thread and your website, I'd like to say a huge thanks for the work you've done, there's a lot for me to read through, I really appreciate how detailed and well explained your documentation is.

Thanks
Casper

eXeler0 · 25 February 2019, 21:08

Quote:

Originally Posted by AJCopland

I was wondering if you'd seen this Chucky http://www.amigaclub.be/projects/amiga1200plus
I wonder why he moved the ram onto a daughter board?

Wow, another one?
Man, that Amiga Reloaded from IC sure looks less and less likely.

Chucky · 25 February 2019, 21:18

Amiga 1200plus..
let me say like this: www.amiga34.de -> Amiga34 -> Aussteller point 10.

and go figure..

Chucky · 14 August 2019, 22:14

Rev 1.4 – 74LS166 Pin 6 and 8 should be connected to Ground!
Also made changes:
Moved some traces being close to edge and vias, some boardhouses had issues with this.
Added headers close to 0Ohm resistors for audio, so you can skip the 0Ohn resisors and do own “mixing” if wanted.
Moved onboard leds some, so they will not short to a diskdrive. Also added headers for leds if mounted in a Tower.
At powerconnector, added pads for a ferritebead, so if using a round powerconnector the N/C pin can be used for ground. (NOT for use on square connector)
At A500 keyboard connector, exluded the extra HDD signal for the key. if wanted, you add a 1Ohm resistor at back to enable function.
Removed 3 0Ohm resistors at alice. (made them onboard instead)

http://www.hertell.nu/webfiles/ReAmiga1200Rev14.zip

AJCopland · 15 August 2019, 13:01

Nice work Chucky, good to see you still working on it

tom256 · 16 August 2019, 15:43

Good to see progress.
But now I do not know if I should assembly my Re-Amiga 1200 v1.2, or wait for newer revisions

30 November 2018, 19:57	#52
Mick Registered User Join Date: Jan 2004 Location: Yorkshire Posts: 710	Ah ok no worries. It's just your latest article says you are using NOS parts so I wondered what you were using. Does anyone know any suitable substitutes for the originals? All I can find about the original ones are this. TDK ZBF503AR-00TA? It appears the boards used either a single coil or 2 small/2 large ferrite beads but you used 4 of the same size in your article? I suppose that's the same as the single coil. Last edited by Mick; 03 December 2018 at 23:57.

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28 September 2018, 09:13	#41
Mr.Flibble Registered User Join Date: Jun 2015 Location: UK Posts: 472	Just waiting on some fresh components before I make a start

13 October 2018, 21:51	#42
Chucky Registered User Join Date: Mar 2015 Location: Karlstad / Sweden Age: 52 Posts: 1,210	http://www.hertell.nu/webfiles/ReAmiga1200Rev12.zip Rev 1.2: At composite 0ohm jumpers. R62 NTSC Location was connected to ground and should ACTUALLT be connected to RGB port (23pin) pin 15. no idea why this fuckup was. Corrected here.. so earlier versions of board and if you want composite/svideo in NTSC middle pad of R62 shold be connected to RGB Pin 15 instead of a jumper. PAL Is not affected IF using a VideoDAC that requires a Zenerdiode, I have now connected the R215 Correctly (was wrong on older versions not connected to +5V. so you must put a 1K resistor here if that DAC is used. on older rev. you need to connect the 1K resistor on RIGHT pad of C215 and to +5V (like top pin of D233A) Added Kickstartswitch functionality,. if you are using 27C800 proms. you can program one bank with one kickstart and the other bank with another. if R6A (bottom side of board) is set to ENA. the jumper can select the active bank. High/low with moving a jumper or a switch. (or a pic controller of your choise) if R6A is set to DIS, the A18 signal is handled as on any Amiga. to make some kind of PIC for this controlled by joystick fire or mouse left. FIR0 and FIR1 have been equipped with a TH hole for soldering a wire there. On older rev. you needed to do a slight solderblob at the pads close to U10 (between it and the FPU location) this is now a trace. Trace is visible so if you need another "strange" budgie configuration, just cut that trace and do your stuff.

20 October 2018, 13:26	#43
Mick Registered User Join Date: Jan 2004 Location: Yorkshire Posts: 710	Have you had any feedback about your clone PCB yet?

20 October 2018, 17:16	#44
Chucky Registered User Join Date: Mar 2015 Location: Karlstad / Sweden Age: 52 Posts: 1,210	well I still have to see someoe who soldered their board but yes I get alot of positive comments.. and well maybe 1 or 2 that say "Better to repair the existing board"

20 October 2018, 18:19	#45
Mick Registered User Join Date: Jan 2004 Location: Yorkshire Posts: 710	Alright, I just wondered if you'd had anyone confirm that they work as I saw some on Ebay.

20 October 2018, 19:01	#46
AJCopland Registered User Join Date: Sep 2013 Location: Beeston, Nottinghamshire, UK Posts: 238	I was wondering if you'd seen this Chucky http://www.amigaclub.be/projects/amiga1200plus I wonder why he moved the ram onto a daughter board?

20 October 2018, 23:53	#47
Chucky Registered User Join Date: Mar 2015 Location: Karlstad / Sweden Age: 52 Posts: 1,210	yes. I have some talks with him. daughterboard.. well. devboard so.. I should also do that

23 October 2018, 20:16	#49
Chucky Registered User Join Date: Mar 2015 Location: Karlstad / Sweden Age: 52 Posts: 1,210	Added an important note to my post about ReAmiga 1200: If you are moving from a 2B board, first of all. you need new memorymodules. BUT you also need to reprogram the GAL. you need to have the 1D.x code for XU9 location not the XU1 location GAL (same physical place but different name) code is in the R1200 archive. http://wordpress.hertell.nu/?p=618

27 November 2018, 15:48	#50
Mick Registered User Join Date: Jan 2004 Location: Yorkshire Posts: 710	What filters are you using for the power? they aren't mentioned in the BOM.

30 November 2018, 08:44	#51
Chucky Registered User Join Date: Mar 2015 Location: Karlstad / Sweden Age: 52 Posts: 1,210	As I did this as a replacement pcb to move components from a bad 1200 to this. I have not really checked that out.

25 December 2018, 22:44	#53
Chucky Registered User Join Date: Mar 2015 Location: Karlstad / Sweden Age: 52 Posts: 1,210	http://wordpress.hertell.nu/?p=710 Did a Errata post. read this before soldering.

26 December 2018, 22:12	#54
Chucky Registered User Join Date: Mar 2015 Location: Karlstad / Sweden Age: 52 Posts: 1,210	Did a Build-guide for the ReAmiga: http://wordpress.hertell.nu/?p=712 http://wordpress.hertell.nu/?p=735 http://wordpress.hertell.nu/?p=750 http://wordpress.hertell.nu/?p=781

25 February 2019, 21:18	#57
Chucky Registered User Join Date: Mar 2015 Location: Karlstad / Sweden Age: 52 Posts: 1,210	Amiga 1200plus.. let me say like this: www.amiga34.de -> Amiga34 -> Aussteller point 10. and go figure..

14 August 2019, 22:14	#58
Chucky Registered User Join Date: Mar 2015 Location: Karlstad / Sweden Age: 52 Posts: 1,210	Rev 1.4 – 74LS166 Pin 6 and 8 should be connected to Ground! Also made changes: Moved some traces being close to edge and vias, some boardhouses had issues with this. Added headers close to 0Ohm resistors for audio, so you can skip the 0Ohn resisors and do own “mixing” if wanted. Moved onboard leds some, so they will not short to a diskdrive. Also added headers for leds if mounted in a Tower. At powerconnector, added pads for a ferritebead, so if using a round powerconnector the N/C pin can be used for ground. (NOT for use on square connector) At A500 keyboard connector, exluded the extra HDD signal for the key. if wanted, you add a 1Ohm resistor at back to enable function. Removed 3 0Ohm resistors at alice. (made them onboard instead) http://www.hertell.nu/webfiles/ReAmiga1200Rev14.zip

15 August 2019, 13:01	#59
AJCopland Registered User Join Date: Sep 2013 Location: Beeston, Nottinghamshire, UK Posts: 238	Nice work Chucky, good to see you still working on it

16 August 2019, 15:43	#60
tom256 Registered User Join Date: Dec 2011 Location: Poland Posts: 166	Good to see progress. But now I do not know if I should assembly my Re-Amiga 1200 v1.2, or wait for newer revisions

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