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Forum: Hardware mods 19 October 2021, 13:45
Replies: 33
Views: 9,935
Posted By jbilander
Here some pics of the SDBox Mini. It fits inside...

Here some pics of the SDBox Mini. It fits inside a standard d-sub DB25 plastic hood :) Well, with some small mods/drill holes for LEDs etc. I haven't tested it much yet but seems to work fine the...
Forum: Hardware mods 01 October 2021, 12:47
Replies: 33
Views: 9,935
Posted By jbilander
SDBox-v2 is now released. This new version...

SDBox-v2 is now released. This new version supports Niklas's awesome new card detect feature. It's not compatible with the older firmware. There is also a SDBox-Mini in the works, almost finished...
Forum: Hardware mods 12 August 2021, 14:27
Replies: 33
Views: 9,935
Posted By jbilander
Hi, I see many modified SDBox derivatives out...

Hi, I see many modified SDBox derivatives out there on Ebay/Amibay/Amiga-Stores etc. which is great. What is not so great is that many of them do not honour the copyleft GPLv3-license, meaning if you...
Forum: support.Hardware 22 July 2021, 13:01
Replies: 33
Views: 2,959
Posted By jbilander
This monitor might be interesting to try with an...

This monitor might be interesting to try with an Amiga. 20.1" 4:3 and supposedly supports both 15/31 kHz modes
https://twitter.com/arcooda/status/1415959389815468034/photo/1
Forum: Hardware mods 01 June 2021, 13:41
Replies: 5
Views: 1,894
Posted By jbilander
In that case I think you can skip these: BAT,...

In that case I think you can skip these: BAT, C1-C5, R4, Y1, U5

and then only a 2 x 20 connector is needed, I think, like this: https://rainisto.github.io/Minimal_A501/

but I haven't tried this...
Forum: support.Hardware 15 May 2021, 14:23
Replies: 13
Views: 1,148
Posted By jbilander
There's more than one way to skin a cat... ...

There's more than one way to skin a cat...

in linux:

dd if=sourcefile of=resultfile conv=swab

or

using srec_cat here http://srecord.sourceforge.net/
Forum: Hardware mods 13 May 2021, 09:20
Replies: 63
Views: 18,543
Posted By jbilander
In the youtube comment section of the video he...

In the youtube comment section of the video he mentions that he doesn't have any PAL-consoles to test with, which is a bit strange if you are a gamer from Australia, but yeah it's possible his Amiga...
Forum: Hardware mods 12 May 2021, 19:39
Replies: 63
Views: 18,543
Posted By jbilander
I think the 50 Hz PAL problem might occur because...

I think the 50 Hz PAL problem might occur because in this case a NTSC-machine was used switched to output a 50 Hz PAL-signal. That is not the same as a PAL-signal coming from a PAL-Amiga with a base...
Forum: support.Hardware 22 April 2021, 14:05
Replies: 27
Views: 1,930
Posted By jbilander
I had to try this and from what I can tell it...

I had to try this and from what I can tell it works like a charm :) Now I can switch my Rev.6A machine between true PAL/NTSC :) I documented it here for those who wanna try this mod:...
Forum: Hardware mods 08 April 2021, 20:41
Replies: 196
Views: 35,607
Posted By jbilander
Thanks for the kind words. I don't know about the...

Thanks for the kind words. I don't know about the current draw, I guess the reason for using a smaller voltage regulator would be to get more room for debug/test-pins from the FPGA, there is only one...
Forum: Hardware mods 05 April 2021, 12:24
Replies: 196
Views: 35,607
Posted By jbilander
so I did some more work on this one. Looks like I...

so I did some more work on this one. Looks like I got the design down on four layers with a 3V3 filled zone under the BGA on the VCC-layer, but I have no idea if this will actually work. I got some...
Forum: Hardware mods 23 March 2021, 11:42
Replies: 65
Views: 7,233
Posted By jbilander
Regarding recreating custom chips, this is what...

Regarding recreating custom chips, this is what you need to do in order to reverse engineer them, http://www.experiment-s.de/en/gallery/ ,take them one-by-one, look at the pictures with the...
Forum: Hardware mods 19 March 2021, 09:01
Replies: 196
Views: 35,607
Posted By jbilander
The link I posted above is her github repo. In...

The link I posted above is her github repo. In the Agnus folder is a couple of pdfs that looks to be original from C=. I guess that is the very same docs we are talking about. I think Stephen's...
Forum: Hardware mods 17 March 2021, 09:53
Replies: 196
Views: 35,607
Posted By jbilander
Hi, regarding Agnus 8375, does anyone know the...

Hi, regarding Agnus 8375, does anyone know the status of the Agnus verilog here?

https://github.com/nonarkitten/amiga_replacement_project/tree/master/agnus

I did a draft on a 8375 drop in...
Forum: Hardware mods 12 March 2021, 13:20
Replies: 33
Views: 9,935
Posted By jbilander
Hi, probably you need a 10k pull-up resistor on...

Hi, probably you need a 10k pull-up resistor on the MISO-line like SukkoPera did. You can check for activity on MISO/MOSI if you have access to an oscilloscope or a logic analyzer.
Forum: support.Hardware 07 March 2021, 09:57
Replies: 27
Views: 1,930
Posted By jbilander
It's good to mention different alternatives, OP...

It's good to mention different alternatives, OP certainly asked for what his options are. As long as the machine runs off of the one oscillator and you switch Agnus to the other mode (in software or...
Forum: support.Hardware 06 March 2021, 18:29
Replies: 27
Views: 1,930
Posted By jbilander
Well, did you read the blog link? That guy had...

Well, did you read the blog link? That guy had been using Degrader for 10 years but finally came to the conclusion it was worth doing a hardware switch mod anyway.
Forum: support.Hardware 06 March 2021, 11:09
Replies: 27
Views: 1,930
Posted By jbilander
I was thinking wouldn't it be very easy to do a...

I was thinking wouldn't it be very easy to do a proper NTSC/PAL-switch utilizing the XCLK (Extern Clock) and /XCLKEN (Extern Clock Enable) pins on the video db23 connector?

The Agnus chip derives...
Forum: Hardware mods 04 March 2021, 13:15
Replies: 19
Views: 3,461
Posted By jbilander
What about heat coming from the Denise chip? Not...

What about heat coming from the Denise chip? Not an issue for the RPi hovering over it?

Perhaps it's possible to use a flex ribbon hdmi cable, something like link below. If you don't tighten the...
Forum: support.Hardware 13 February 2021, 16:09
Replies: 15
Views: 983
Posted By jbilander
Try here: ...

Try here:
ftp://ftp:any@grandis.nu/~Uploads/BastyCDGS/Scans/AMIGA/Hardware/Specifications%20Agnus%20-%20Manual-ENG%20.zip

Looks like kipper2k is already on top of that rev3 issue...
Forum: support.Hardware 13 February 2021, 12:56
Replies: 15
Views: 983
Posted By jbilander
You can check the C= Agnus specification...

You can check the C= Agnus specification available on the EAB file server, check this thread below:
http://eab.abime.net/showthread.php?p=1249826

Here is what the Agnus spec says about how the...
Forum: support.Hardware 05 February 2021, 16:12
Replies: 1
Views: 232
Posted By jbilander
I used four of these low profile Preci-Dip...

I used four of these low profile Preci-Dip sockets, link below. No longer stocked but maybe you can source them elsewhere? You can check out pictures of this in the (sticky) thread "Amiga 500 mod to...
Forum: support.Hardware 03 February 2021, 14:43
Replies: 12
Views: 735
Posted By jbilander
Maybe this one then? I don't know but seems to be...

Maybe this one then? I don't know but seems to be the correct pin pitch and has dual wipes. Only rated 1A max though, I think an old 68000 cpu has power consumption of around 1.5W at 8MHz and current...
Forum: support.Hardware 02 February 2021, 21:19
Replies: 12
Views: 735
Posted By jbilander
Make sure they have 22.86 mm row pitch and 2.54mm...

Make sure they have 22.86 mm row pitch and 2.54mm pin pitch. Based on the reviews those aliexpress dip64 are 1.778mm pin pitch, won't fit.

Here are two quality options but with turned pins:
...
Forum: Hardware mods 31 January 2021, 13:50
Replies: 33
Views: 9,935
Posted By jbilander
Hi, you'll need the driver spisd.device in Devs,...

Hi, you'll need the driver spisd.device in Devs, and the correct SD0 file, and the SD0.info if you are going to mount by doubleclicking the icon.

Drivers here:...
Forum: Hardware mods 27 January 2021, 11:07
Replies: 33
Views: 9,935
Posted By jbilander
Hi, JP1 is for resetting the Nano on Ctrl-A-A....

Hi, JP1 is for resetting the Nano on Ctrl-A-A. Should not be needed. It is documented under the hardware readme. Did you succeed on mounting your card? Otherwise you might want to try with a pull-up...
Forum: Hardware mods 20 January 2021, 13:15
Replies: 33
Views: 9,935
Posted By jbilander
Hi, I would advise against powering via the...

Hi, I would advise against powering via the joystick-port, it's only rated for 50mA or so and the Nano board itself draws around 30mA then you have the current draw of the I/O-pins and the optional...
Forum: Hardware mods 18 January 2021, 12:27
Replies: 33
Views: 9,935
Posted By jbilander
Hi, install the fat95 (from Aminet) file system...

Hi, install the fat95 (from Aminet) file system handler in L: and copy the mountfile SD0 to some suitable place e.g. Devs folder in wb where it can be used to mount the SD card on demand by simply...
Forum: Hardware mods 08 September 2020, 17:13
Replies: 41
Views: 4,954
Posted By jbilander
For perfection you might want power resistors on...

For perfection you might want power resistors on the 12V and -12V as dummy loads, dissipating energy as heat, (check your Meanwell's spec for minimum loads since a plain vanilla Amiga doesn't draw...
Forum: Hardware mods 07 July 2020, 18:09
Replies: 503
Views: 98,216
Posted By jbilander
Yes that is true, you'll need to have it written...

Yes that is true, you'll need to have it written in ink before committing to such a design. How much it will cost to order another batch of 100 pcs for example.
Forum: Hardware mods 07 July 2020, 17:55
Replies: 503
Views: 98,216
Posted By jbilander
"Don't be evil" is their slogan, right?, Skywater...

"Don't be evil" is their slogan, right?, Skywater not Skynet ;) Yeah of course they want to see what comes out of this and they probably don't know what to do with that old Minnesota fab anyway....
Forum: Hardware mods 07 July 2020, 16:58
Replies: 503
Views: 98,216
Posted By jbilander
Thanks for the update anyway. Sounds promising....

Thanks for the update anyway. Sounds promising. Imagine eventually having this core put on a chip and clock the bejesus out of it, it would be in "Phone Me Now!" territory pretty easily :) This can...
Forum: Hardware mods 07 July 2020, 10:53
Replies: 503
Views: 98,216
Posted By jbilander
Very nice, can you say anything about the SD...

Very nice, can you say anything about the SD drive speed? I know earlier in the thread you talked about a 4-bit SDIO controller being implemented eventually possibly even with DMA. That sounds really...
Forum: support.Hardware 03 July 2020, 09:38
Replies: 4
Views: 576
Posted By jbilander
If you want the exact pinout you have the...

If you want the exact pinout you have the Schematic diagram here, In the upper left corner of the picture. With this pinout info you can check your cable's wiring with a multimeter (continuity check)...
Forum: support.Hardware 02 July 2020, 16:01
Replies: 2
Views: 409
Posted By jbilander
Hi, Perhaps you can use a mountlist from...

Hi,

Perhaps you can use a mountlist from here?

http://aminet.net/package/disk/misc/ZipStandard
Forum: Hardware mods 15 June 2020, 13:41
Replies: 63
Views: 18,543
Posted By jbilander
Thanks lilwshu for letting us know regarding the...

Thanks lilwshu for letting us know regarding the 2X-SCART, I wonder if the same goes for the RAD2x PS2 cable if modified with a d-sub db23 plug. If anyone tried that with an Amiga please let us know...
Forum: support.Hardware 11 June 2020, 13:05
Replies: 5
Views: 605
Posted By jbilander
If you want the exact pinout, I have gathered...

If you want the exact pinout, I have gathered some information regarding the parallel port here:

https://github.com/jbilander/sdbox/blob/master/technical-info-parallel-port.md
Forum: Hardware mods 11 June 2020, 12:39
Replies: 33
Views: 9,935
Posted By jbilander
Thanks, Tried it on the A1200 yesterday, on...

Thanks,

Tried it on the A1200 yesterday, on a clean install 3.1.4, seems to work fine the little I tested. It is a little tight with space towards the red RCA audio connector as you can see from...
Forum: Hardware mods 10 June 2020, 11:35
Replies: 33
Views: 9,935
Posted By jbilander
Thanks for the kind words. In the link...

Thanks for the kind words.



In the link below you'll find the explanation and a commit how it is done. 2E-speed requires a fast CPU, hence an accelerator installed, so that the instruction...
Forum: Hardware mods 08 June 2020, 14:32
Replies: 33
Views: 9,935
Posted By jbilander
sdbox for Amiga [Official thread]

Hi all,

It's unveil time! :)


http://i.imgur.com/nsAjf3Xs.jpg (https://imgur.com/nsAjf3X)http://i.imgur.com/5WDt5ais.jpg (https://imgur.com/5WDt5ai)http://i.imgur.com/lW0NsSis.jpg...
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