exxos's Atari, Amiga & retro forum

So I made a clone of this board, but SMD instead. Half the size of the original cartridge. The 3,5 jack is facing to the back instead of the front. Had to do a patchwire since I forgot the signal trace to the amplifier chip. New boards ordered with the trace fix and some other small fixes on silkscreen and change the package for the diode. The original cartridge was released with the game B.A.T in 1989. I don't know if the cartridge for BAT2 is any different? Anyone knows? I haven't tried it with any trackers.


Tried it with @agranlund port of SCUMM with Day of The Tentacle on a TT.

Looks interesting.

Pic on the original cartridge and a YT clip with the music from the game BAT thru the cart:

Nice!!
Can I buy one? :)

(Either completely built, or just a pcb if that works best for you)

This looks very cool! If you do produce a kit or something let me know!

agranlund wrote: 01 Jul 2020 06:19 Can I buy one? :)

(Either completely built, or just a pcb if that works best for you)

Of course. The new fixed PCB is on their way from China. But I took the cheap postage option so it going to take like 3 weeks to arrive. And is summer vacation time anyway now. But I PM you when I got one soldered up. I have to check the price for all the parts but it can't be that much.

GadgetUK164 wrote: 01 Jul 2020 11:08 If you do produce a kit or something let me know!

I can probably make a kit with all the parts if you would like to solder one yourself. I'll PM you some time in the near future when I got the PCB.

I probably release the gerbers and BOM later on or order more PCB. I only got 5 made this time.

DoG wrote: 02 Jul 2020 15:49 Of course. The new fixed PCB is on their way from China. But I took the cheap postage option so it going to take like 3 weeks to arrive. And is summer vacation time anyway now. But I PM you when I got one soldered up. I have to check the price for all the parts but it can't be that much.

Brilliant! Thank you :)
There's no rush on my part, as you said summer vacation is coming up anyway and I'll be heading for the mountains to do some hiking and tenting far away from technology :)

DoG wrote: 02 Jul 2020 15:49

agranlund wrote: 01 Jul 2020 06:19 Can I buy one? :)

(Either completely built, or just a pcb if that works best for you)

Of course. The new fixed PCB is on their way from China. But I took the cheap postage option so it going to take like 3 weeks to arrive. And is summer vacation time anyway now. But I PM you when I got one soldered up. I have to check the price for all the parts but it can't be that much.

GadgetUK164 wrote: 01 Jul 2020 11:08 If you do produce a kit or something let me know!

I can probably make a kit with all the parts if you would like to solder one yourself. I'll PM you some time in the near future when I got the PCB.

I probably release the gerbers and BOM later on or order more PCB. I only got 5 made this time.

Awesome!!! Thanks =D

What is it, some kind of general midi?

Steve wrote: 04 Jul 2020 15:58 What is it, some kind of general midi?

Nope. A simple DAC (digital to analog converter) built of a resistor tree and with a small amplifier circuit. Samples/music sounds better then using the internal YM2149 chip in the Atari. So it has a 3,5mm jack on it which you hook up to some speakers or earplugs/earphones.