IJK interface diagrams.

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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kenneth
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Re: IJK interface diagrams.

Post by kenneth »

Maybe with something like ULN2803 chip ?

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HigashiJun
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Re: IJK interface diagrams.

Post by HigashiJun »

Silicebit. wrote:
Thu May 28, 2020 5:12 pm
HigashiJun wrote:
Wed May 27, 2020 2:43 am
I perfectly understand you, Silicebit.

... there's no way to get working simultaneously my Cumana reborn and a joystick interface on the same port.......
For the moment. :wink:
So let's hope !

:D

Cheers !
HigashiJun

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HigashiJun
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Re: IJK interface diagrams.

Post by HigashiJun »

Just found the following link:

https://www.old-computers.com/museum/ha ... c=180&st=1

There was something called "Cumana expansion box" for the Oric, and according to the above mentioned web site "This expansion holds a power supply unit and a dual expansion port allowing the floppy disk unit and another expansion device to be connected simultaneously.".

Never heard of it, but if someone has some information, just let us know.

Cheers !
HigashiJun

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Dbug
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Re: IJK interface diagrams.

Post by Dbug »

HigashiJun wrote:
Fri May 29, 2020 3:34 am
There was something called "Cumana expansion box" for the Oric, and according to the above mentioned web site "This expansion holds a power supply unit and a dual expansion port allowing the floppy disk unit and another expansion device to be connected simultaneously.".
Interesting.

I wonder how difficult it would be to design an expansion for the Oric, which basically would be like a variant of the amplibus/cumulubus that you attach at the back of the oric, with multiple connectors on it, and for each connector a set of jumpers or switches allowing to select for each connector an addressing range so you could basically add to a device that does not do any proper address decoding and force it to only narrow down to a specific range.

Obviously software would have to be patched or made to support the possibility to change I/O ports locations, but that would make it possible to use the French TMPI speech synthesizer with a microdisc or cumulus, for example :)

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HigashiJun
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Re: IJK interface diagrams.

Post by HigashiJun »

It would help a lot to get hands on this "Cumana expansion box" to see what's inside...
HigashiJun

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ibisum
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Re: IJK interface diagrams.

Post by ibisum »

Ummm.. Twilighte/Sittler card, hello. Has everything we need to put more peripherals into action.


http://orix.oric.org/hardware/twilighte-card-v0-3/

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HigashiJun
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Re: IJK interface diagrams.

Post by HigashiJun »

But "microdisc (or cumulus) can’t be plugged"...

Cheers.
HigashiJun

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ibisum
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Re: IJK interface diagrams.

Post by ibisum »

.. because it already has an SD card onboard:
Twilighte card V0.3

V0.3
Only works with a 65C02 (new : works with a 6502)
handles 16KB*7 banks (rom)
Handles Overlay ram
microdisc (or cumulus) can’t be plugged
usb key reader
sdcard read
In the future, firmware update will allow 512KB of rom and 512KB of ram
2 joysticks port
usb mouse, joysticks, keyboard

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HigashiJun
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Re: IJK interface diagrams.

Post by HigashiJun »

Yes, I know, but if you want to use old school floppies, you're stuck...

:(
HigashiJun

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Silicebit.
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Re: IJK interface diagrams.

Post by Silicebit. »

Dbug wrote:
Fri May 29, 2020 6:27 am
I wonder how difficult it would be to design an expansion for the Oric, which basically would be like a variant of the amplibus/cumulubus that you attach at the back of the oric, with multiple connectors on it .......
I’m working on a device I call OmniBus, this is an AmpliBus multi port with 4 expansion connectors.
OmniBus.
OmniBus.
OmniBus.png.jpg (48.75 KiB) Viewed 1703 times
Also, I’m working on other device I call OrLink, this is a cartridge interface with one RS232 connector, and Wi-Fi connection via an ESP-12F module.
OrLink.
OrLink.
Orlink.png.jpg (62.68 KiB) Viewed 1703 times
Last edited by Silicebit. on Fri May 29, 2020 1:04 pm, edited 2 times in total.
Oric user since 1984. YouTube

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HigashiJun
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Re: IJK interface diagrams.

Post by HigashiJun »

It's getting interesting...

Really nice projects, Silicebit. ! :D

Cheers.
HigashiJun

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ibisum
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Re: IJK interface diagrams.

Post by ibisum »

Ooh, Oric + Wifi == MIDI! :). (rtpMIDI)

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Chema
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Re: IJK interface diagrams.

Post by Chema »

:shock: :shock:

modem + wifi sounds great :)

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dizzy33
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Re: IJK interface diagrams.

Post by dizzy33 »

Hello, I am very interested in the "Omnibus" project, I need one to connect both my Erebus and my Protek joystick interface on my Atmos.
Silicebit, how is this project going ? Do you think it should be finished this year ?
Will it be powered by its own power supply ?

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Re: IJK interface diagrams.

Post by rjiji »

Testing IJK interface by kenneth.....Hummmmm

Image

Image


Erebus + IJK interface :wink:

Thanks KENNETH

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