ORIC SDCARD

This is the right place to discuss on how to implement hardware vsync, adding a VIA or AY chipset, puting multiple roms, or how to design a new flash expansion card.
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iss
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Re: ORIC SDCARD

Post by iss »

Thanks, very interesting indeed. Classic scheme - clear and well designed - no doubt it will work stable.
Actually it's very close to the scheme I used for OricExos slaves to enable RAM Overlay (which works nice too!) :).
In the doc file is written about using MAP signal to disable internal RAM (#0000..#C000),
this information can be found in other sources, but my question is:
Does anyone know about a real existing device which adds external RAM to Oric-1/Atmos ?

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ibisum
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Re: ORIC SDCARD

Post by ibisum »

I really want to make one of these ORIC SDCARD projects - anyone else interested? I think we can (affordably) do a small production run of PCB's if we get enough interest ..

romualdl
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Re: ORIC SDCARD

Post by romualdl »

I would be in. But as stated before, there are some differences between the schematics and the board. So for routing purpose it should be better to wire them correctly. I will have a look at it by the end of the week (I have a sdlep to solder for my Acorn Electron and Matra Alice before ;) ).

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ibisum
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Re: ORIC SDCARD

Post by ibisum »

Would be good to get this sorted out - I'll commit to at least 5 of these boards, out of the batch .. and am willing to finance more if there is interest and we might get them distributed, over time, to other Oric users.

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Voyageur
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Re: ORIC SDCARD

Post by Voyageur »

I also would be in.
I intend to make a dirty one for tests but it will be great to get a nice card.
Oric Atmos : a new life !

romualdl
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Re: ORIC SDCARD

Post by romualdl »

I have ordered the parts to make one for testing ;)

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Voyageur
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Re: ORIC SDCARD

Post by Voyageur »

Thanks to Edl42 !
I've modified a little bit the code and the schematics to use a 1602 I2C LCD (only 2 pins for the Nano : A4 and A5).
I am just waiting for a SD card reader module and soon, I will made a 'dirty" copy of it.
Will report whatever is the result. 8)
Oric Atmos : a new life !

romualdl
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Re: ORIC SDCARD

Post by romualdl »

Hehe still waiting for the parts here to finish mine. Hope to get them soon...

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kenneth
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Re: ORIC SDCARD

Post by kenneth »

Je teste actuellement une lecture du répertoire racine d'une carte SD avec des portes logiques et un EPROM 64k. Le projet n'est pas terminé...


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Voyageur
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Re: ORIC SDCARD

Post by Voyageur »

I finally made a dirty version of the ORIC SDCARD and that's working pretty well...

Have a look here :

https://youtu.be/QB_Fa6f4D-g

Thanks to EdL42 ! :D
Oric Atmos : a new life !

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kenneth
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Re: ORIC SDCARD

Post by kenneth »

Nice ! 8)

zaxon
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Re: ORIC SDCARD

Post by zaxon »

Assembled ;) Lot of wires. :D

Image

I think do some PCB so interface can looks like this ?

Image

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Chema
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Re: ORIC SDCARD

Post by Chema »

Looks terrific! :D

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ibisum
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Re: ORIC SDCARD

Post by ibisum »

This is really beautiful. Only thing I wonder is if its going to be possible to somehow mount .DSK images programmatically from the Oric itself, rather than requiring user interaction...

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Symoon
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Re: ORIC SDCARD

Post by Symoon »

This looks great!
Makes me think that we could re-use old joysticks (quickshot style), integrate a screen and use the joystick + fire button to navigate in the menus ;)

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