SPI controller for A1200 (clock port)

[McTrinsic]

Count me in for two .

The sub-page for the product still exists, btw.

A recommendation regarding a compatible Ethernet-SPI-slave would be nice.

[trixster]

I wonder what’s going on with this project? Permanently shelved?

[utri007]

Originally Posted by trixster

I wonder what’s going on with this project? Permanently shelved?

I think so, it is totally disappeared from their web site.

Somebody should do this.

[mpattonm]

Shame

[MartinW]

The project is on the website as of today, listed still as "Coming Soon".

I was not aware of the project before today so I don't know if it was hiding all along or it has been put back? I would buy one of these since RapidRoad does not work well in my A1200 so it would be good (probably) for ethernet plus if I ever got back into tinkering with hardware it might be really useful..

[Lemaru]

@Spidi - has there been any progress on this at all? Still wanting to grab one for my A600 if its compatible. Cheers

[solidcore]

The performance was unrealistic, perhaps a bug that could never be resolved?

[utri007]

Few days and this is one year old project.

Would be nice to get project update and reason for a delay.

[utri007]

Project is now more than year old.

I really would like to have this, would it be too much to ask for a short status update?. For me, seems that project has entered to problems?

[utri007]

Coming soon has disappeared to product picture, but there is no resellers?

https://retro.7-bit.pl/?lang=en&go=projekty&name=SPICP

[utri007]

This is on sale in Alinea Computers now https://www.amiga-shop.net/Amiga-Har...ml?language=en

Price is humble 34,95€, BUT for me seems that there is only a SD card device driver included?? This based what is inside of this 7-bit_Installer_v1.1.lha

Wicher 500i rev.2c has also a SPI interface, it has a device driver for ENC28J60 Mini NIC / Land card. Will it work with this?

[trixster]

This is for the A1200 clockport - can it be made to work on the clockport of a Deneb? I think that has a different address location to the A1200 clockport?

[utri007]

does this look correct? Is cable correct way and red stripe? Wondering how to wire NIC? Can I use it same time with SD card readere?

[o0beanhead0o]

Are these available to buy anywhere now?

[utri007]

Originally Posted by o0beanhead0o

Are these available to buy anywhere now?

As far as I know, they are not sale. Don't bother to get one, there is only a SD card driver for this. Retro 7-bit doesn't communicate well about this, but after year wait I get to know that most likely there is no other drives for this product. I disapointed both Retro 7-Bit and my SPI controller.

This could have been game changer product, there is a lots of different SPI devices. I would have hoped a NIC and MP3 decoder drivers.

[Niklas]

If the CPLD used, XC9572XL, had been more readily available then it would be easy to create an open source version of this adapter. Having the design as open source would allow others to develop drivers for their favorite SPI peripherals.

It may be possible to use some replacement cpld such as https://www.mouser.se/ProductDetail/556-ATF1504AS-7JX44, but chip availability is pretty bad all around atm.

[Lemaru]

Originally Posted by Niklas

If the CPLD used, XC9572XL, had been more readily available then it would be easy to create an open source version of this adapter. Having the design as open source would allow others to develop drivers for their favorite SPI peripherals.

It may be possible to use some replacement cpld such as https://www.mouser.se/ProductDetail/556-ATF1504AS-7JX44, but chip availability is pretty bad all around atm.

One for the to-do list?

[Daedalus]

You don't need the board to be open-source to write drivers for SPI peripherals. You just need good documentation on how to use spi.device or spi.library or whatever, and the documentation for whatever SI device you're connecting. How the board actually works is irrelevant.

[Mathesar]

Originally Posted by Daedalus

You don't need the board to be open-source to write drivers for SPI peripherals. You just need good documentation on how to use spi.device or spi.library or whatever, and the documentation for whatever SI device you're connecting. How the board actually works is irrelevant.

True! But then we need some well defined API for such a device. I personally would be in favor for such an initiative. SPI hardware is pretty simple to implement and a lot of accelerator cards have it just because they had some room left in the CPLD. I am working on a minimal (5 7400 logic chip) 2-channel SPI controller for the A500 to support an SD card and a network chip.
I have implemented the spi part as a resource for now (but only very simple, the resource just presents a semaphore, the actual SPI code is in the SD/network driver) but I think a device would make more sense.
Such a device would then need to support functions to set polarity / clockphase, speed, etc, etc. It would also need proper fallback in case some hardware doesn't support all the features (like my hardware )

[Daedalus]

Yep, good documentation is essential with anything like this. My worry with lots of these projects are that they turn out incompatible with other similar projects because there isn't an established standard API. Decent documentation would help avoid this, allowing already existing drivers to work.