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The VIA chip is very useful in many protocols in the serial mode, but the used channels are CB1 CB2, unavailable on the printer port, in spite of this, we can connect all Orics on the parralel bus, and connect a little EPROM interface on the expansion port like Fabrice-F PCB with an 'almost' same BA...

nice project
The +5v is also available on the main power socket of the Oric computer.
The relative voltage from the Oric ground is -4v and +5v (negative regulator).

Merry Christmas and good projects for Oric

I think that there is no power enought on the printer port and IJK-PASE interfaces are not compatible.

Like this ? https://fr.aliexpress.com/item/10PCS-DC3-34-Pin-2x17Pin-Right-Angle-Double-Row-Pitch-2-54mm-Double-spaced-Pin-Male/32830491398.html?ws_ab_test=searchweb0_0,searchweb201602_1_10152_10065_10151_10344_10068_10345_10342_10343_10340_10341_10541_10562_10084_10083_10305_10304_10307_10306_10177_...

Nice !
Maybe that could be done for the Oric computer and the Atmostrat project.

Wonderful project ! It's a good way to democratize a handy transfer of our favorite games without complex process. Поздравления Iss !

Symoon wrote: ↑

Sat Feb 04, 2017 1:18 pm

...Kenneth show his SD card reader project (see http://forums.oric.org/t189-rs - in French)

I put an English-subtitles explanation here
https://www.youtube.com/watch?v=i9GlkzznB38

zaxon wrote: ↑

Sun Jul 02, 2017 12:10 pm

...Also ,somebody know why in Cumulus is Flash EEprom 256, not normal eprom like 27c64 ? Rom for microdisc is 8 KB. So what about rest?

It's more handy for updating, you don't need to erase the software with an UV lamp to re-write. I suppose that the EEPROM contains also the update microprogram.

I tried it, funny, and the background music is nice !

I am not agree with you Godzil, indeed, we can use a rectifier for each regulator, that will make a schematic respectful of electronic theory, but sometimes, when the manufacturers want to make a low cost device, they use the middle point of the transformer, who is not oscillating despite the appear...

As I can see on the picture the transformer is a classic one with two coils connected in serial mode and the output is in the same configuration, the middle output connection is used for a symetric rectifier, then I suppose that the transformer gives the same voltage in the output (for ex 2x 9v).......

Maybe a component of the interface that spends too much energy ?
You can check it by touching the heating surface of the component.

3,8v in place of 5v it is too low. At least we need around 4.8v.

You can disconnect the 2200uf condenser and check that the 12V regulator is switched on again, we can verify if the chemical condenser is too old. Very important: when the load is connected to the regulators, the cooler is required, (the metal plate screwed behind the regulator with the sticky therm...