DIY game cartridge

By SkalTura

Master (192)

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28-03-2017, 16:29

Looking for the schematics to make a simple game cartridge for MSX1 ROM's.
I can remember that there was an article in a Dutch electronics magazine a very long time ago that did this, but I can't seen to find it anywhere...

It looked at lot like the picture in this topic: https://www.msx.org/forum/msx-talk/hardware/msx-eprom-cart-t...

Anyone have the article by any change ?

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By Jipe

Paragon (1366)

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28-03-2017, 19:25

http://msxvillage.fr/download/?url=/16-elektor/102-elektor-n...
is in Elektor Magazine search the same in your favorite language

By SkalTura

Master (192)

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28-03-2017, 19:45

Yes that's it...
Many thanks !

By Wlcracks

Champion (326)

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02-04-2017, 19:54

I had problems with this design with 32k eeproms and flash,29c256 and28c256. These chips will set at 0000-7fff. line a14 needs to be swapped with a15 at pin1 or pin 27. 28c256 dont work at all in this design the 29c256 will but, as mentioned, at the "wrong" pages.

By roadfighter

Champion (395)

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04-04-2017, 22:20

Maybe this article on mrc is also something to look at.
Eprom cart for testing
I have some Eprom cartridges left to.

By roadfighter

Champion (395)

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05-04-2017, 19:24

roadfighter wrote:

I have some Eprom cartridges left to.

Sorry i meant i have some Eprom PCB's the are without casing.

By amigo-mexicano

Supporter (3)

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18-04-2017, 17:54

Hello roadfighter, do you still have Eprom PCBs for sale? Thanks

By roadfighter

Champion (395)

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22-04-2017, 10:54

Yes PCB's are still for sale.

By SkalTura

Master (192)

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09-05-2017, 07:28

Wlcracks wrote:

I had problems with this design with 32k eeproms and flash,29c256 and28c256. These chips will set at 0000-7fff. line a14 needs to be swapped with a15 at pin1 or pin 27. 28c256 dont work at all in this design the 29c256 will but, as mentioned, at the "wrong" pages.

I'm using this article only as reference. I want to design a cartridge myself for my MSX1, so some experimenting is required anyway.
Any articles on "bank switching" with bigger ROM's is also welcome by the way...

By roadfighter

Champion (395)

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09-05-2017, 19:24

@ WLcracks, or you swap the uper and lower 16k in the eprom when burning.
The pcb's i hve you can set a jumper from pin1(A15)to msx A14, A15 or + 5volt or ground.
Also for Pin 27(A14).

By Wlcracks

Champion (326)

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10-05-2017, 07:33

Schematics for reference

32k