DIY game cartridge

Door SkalTura

Master (190)

afbeelding van SkalTura

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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Van 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

Van SkalTura

Master (190)

afbeelding van SkalTura

28-03-2017, 19:45

Yes that's it...
Many thanks !

Van Wlcracks

Champion (317)

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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.

Van roadfighter

Champion (385)

afbeelding van roadfighter

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.

Van roadfighter

Champion (385)

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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.

Van amigo-mexicano

Supporter (3)

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18-04-2017, 17:54

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

Van roadfighter

Champion (385)

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22-04-2017, 10:54

Yes PCB's are still for sale.

Van SkalTura

Master (190)

afbeelding van SkalTura

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...

Van roadfighter

Champion (385)

afbeelding van roadfighter

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).

Van Wlcracks

Champion (317)

afbeelding van Wlcracks

10-05-2017, 07:33

Schematics for reference

32k