exxos's Atari, Amiga & retro forum

HigashiJun wrote: 20 Aug 2022 14:47 Did you get this ATX board from the guy making it in Poland ?

Atari ST ATX gerbers can be found on http://ataripcb.pl/ and you can order your own PCB.

Yes, these ATX boards were created by x_angel.

DoG wrote: 20 Aug 2022 15:15

HigashiJun wrote: 20 Aug 2022 14:47 Did you get this ATX board from the guy making it in Poland ?

Atari ST ATX gerbers can be found on http://ataripcb.pl/ and you can order your own PCB.

If ordering the ATX PCBs, also order the RAM card as this is needed as well.

I am not sure if x_angel has the updated PCBs on his site so just in case, the only fix needed on the ATX PCBs is for the ISA slot to work correctly:

RDY signal needs separating from GLUE-DMA by cutting track between DMA to IC12 (GAL) so RDY becomes separate RDY2 signal/track between IC12 and ISA slot. x_angel suggested fix would be to drill the via directly to disconnect the top track and bottom track and would be a neater fix.

@DoG @kodak80

Thanks for your replies.

Will have to check the Polish forum thoroughly...

Here is the polish forum where the ATX board was discussed originally:

http://www.atari.org.pl/forum/viewtopic.php?id=17585

Thank you !

Thanks for the link @kodak80.

I've ordered 5 boards from JLC. I'll probably use 2, so if anyone is interested I'll have 2or 3 spares.

PhilC wrote: 25 Aug 2022 16:35 Thanks for the link @kodak80.

I've ordered 5 boards from JLC. I'll probably use 2, so if anyone is interested I'll have 2or 3 spares.

I'd be interested to hear how you get on (and maybe in a board too...especially if a solution for the cartridge port can be devised at some point - I'd seen comments suggesting that might be via the ISA slot maybe?)!

I now have 2 fully built ATX boards here, a third board will be heading down to @atari030 for him to build up. The PIC chips arrived and I got the keyboard, mouse and joystick running now which is allowing me to format the CF IDE hard disk connected to the IDE connector. Power for IDE CF card adapters has power on pin 20 (via a solder jumper underneath) so no power required from the PSU.

Powered now from my ATX PSU.

ISA slots fitted and waiting on an ET4000AX based ISA card to arrive but this was tested by @x_angel already.
:girldance: :girldance: :girldance:

ATX board has now been tested with the latest cracked Cubase 3.10 playing MIDI files to my MT32-pi. :D

Still need to test MIDI IN port so planning to fire up MIDIMAZE 2 tomorrow with the 2 boards.