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Forum: Hardware mods 08 April 2021, 20:41
Replies: 161
Views: 23,359
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: 161
Views: 23,359
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: 4,909
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: 161
Views: 23,359
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: 161
Views: 23,359
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: 24
Views: 4,932
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: 21
Views: 842
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: 21
Views: 842
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: 21
Views: 842
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: 18
Views: 1,463
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: 739
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: 739
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: 134
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: 487
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: 487
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: 24
Views: 4,932
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: 24
Views: 4,932
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: 24
Views: 4,932
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: 24
Views: 4,932
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: 3,681
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: 500
Views: 82,238
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: 500
Views: 82,238
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: 500
Views: 82,238
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: 500
Views: 82,238
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: 487
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: 304
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: 49
Views: 10,163
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: 398
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: 24
Views: 4,932
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: 24
Views: 4,932
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: 24
Views: 4,932
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...
Forum: support.Hardware 04 June 2020, 14:20
Replies: 270
Views: 38,722
Posted By jbilander
I actually suggested that to the Vampire team on...

I actually suggested that to the Vampire team on their forum the other day, that they could offer an 060-core replica (a stripped down 080) in a smaller cheaper FPGA as a CPU-option for cards like...
Forum: support.Hardware 02 June 2020, 10:07
Replies: 28
Views: 2,504
Posted By jbilander
TF has started a ReAgnus project, he now has a...

TF has started a ReAgnus project, he now has a lot of resources on Agnus including the original schematics. Check around 26:28 into his youtube stream he mentions this. Great Stuff....
Forum: support.Hardware 28 May 2020, 11:11
Replies: 15
Views: 771
Posted By jbilander
No Problem. Glad it helped. With a Rev 6A...

No Problem. Glad it helped. With a Rev 6A motherboard I would rather use the trapdoor expansion port though, and not populate the four empty slots on mobo. Most memory expansion cards has a RTC chip...
Forum: Hardware mods 27 May 2020, 14:25
Replies: 49
Views: 10,163
Posted By jbilander
VGP (videogameperfection) has them for resell...

VGP (videogameperfection) has them for resell here in Europe as well, but €105 (incl. VAT) is a bit steep in my opinion. Difference to the RAD2x is the 2X-SCART has the artificial scanlines option...
Forum: support.Hardware 27 May 2020, 11:39
Replies: 15
Views: 771
Posted By jbilander
Just a heads up, you might want to source...

Just a heads up, you might want to source ultra-flat sockets because it gets tight with keyboard clearance once you put standard 20 pin dip sockets in there. Check out the (sticky) thread "Amiga 500...
Forum: support.Hardware 24 May 2020, 11:41
Replies: 4
Views: 495
Posted By jbilander
The TF534 will autoconfig to Z3 space so...

The TF534 will autoconfig to Z3 space so shouldn't conflict. I think the TF534's 4MB 32-bit RAM will be given higher priority config automatically but I'm not sure. That is however important because...
Forum: support.Hardware 13 May 2020, 22:49
Replies: 3
Views: 405
Posted By jbilander
Light grey indicates CIA error or ROM corruption....

Light grey indicates CIA error or ROM corruption. Black is No CPU detected, or ROM error, or CIA.

It sounds like you have problem with the ROM or the CIA's or the sockets/traces for them, try...
Forum: Hardware mods 03 May 2020, 14:16
Replies: 38
Views: 5,508
Posted By jbilander
Probably because of post #38 in thread below?....

Probably because of post #38 in thread below?. Sad if that is the case. It was an excellent tool for troubleshooting.

http://eab.abime.net/showthread.php?t=99872&page=2
Forum: support.Hardware 30 March 2020, 23:20
Replies: 5
Views: 589
Posted By jbilander
I think the last step in post #53 explains the...

I think the last step in post #53 explains the problem:
http://eab.abime.net/showthread.php?t=77782&page=3
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