6502.org

You can find a lot of stuff in this thread, and some earlier discussions near the end of this one.

The hardware that I was working on had a CS4954 composite video chip, with 27 MHz pixel clock, with 8 bit data bus alternating between UYVY (see YUV color coding), so really only 13.5M pixels/sec. SDRAM interface was running at 100 MHz, so there was plenty of bandwidth. However, with overlapping sprites, a single pixel could require several memory reads at different addresses.

To deal with variations in sprite build time and memory delays, the video generator used a 2KB FIFO for pixel data.

Thanks! Look forward to reading through the threads this evening.

Sounds great...

Is this a good beginners project ?
Would this be a good start learning about FPGA or does it require previous FPGA experience ?
I don't think I would have any problems wiring the components or installing the software.
Looks to me that all the software is free, is this a valid assumption ?
I just upgraded to Windows 10, does the software work with this version ?

Hi Alarmorobotics.
Yes, the projects are suitable for beginners - it is intended to give a complete walkthrough or what is needed and an introduction to FPGAs and the VHDL that is used. Everything you need to type in is included on the page, and once you become familiar with what is going on then you can experiment with what is there.
The board and programmer are nice and cheap and the software is 100% free from the official website.

It took me a while before I was brave enough to attempt FPGA experiments as it looked too expensive and complicated. Hopefully the pages will show you that it can be done cheaply and relatively easily.

I am running the software on Windows 10 (Professional) with no problems.

Have fun!

Grant.

Howdy...

Thanks, I'll give it a try...
If I order the $30 board now, I should have it by Christmas...

Finally got some time to play around with it...

I would like to add some external RAM but it looks like I only have 5V chips.
Need to order some that handles 3.3 V in stead.

I'll keep you updated...

Hi.
I have given up with the previous web hosting - they banned me because they said I was getting too many hits and instead of throttling as they used to, they now just say I violated their T&Cs and take me down !!
So, I have now purchased my own domain (searle.wales) and put my files on a different hosting server.
Since I now have my own domain I can then put my files anywhere and move them if needed without affecting any posts such as this.

I may move some folders around a bit, so please always go to the starting page (http://searle.wales or http://www.searle.wales) and you will always get to me wherever I have moved to.

My pledge is to keep my pages online (since 1997!) so if they go offline for any reason don't worry - they will be back.

Have fun!

Grant
http://searle.wales

Thank you, Grant. Nice to see you again and hope you're doing well, Sir.

Cheerful regards, Mike McLaren

Great to see you back, Grant.

Have you considered hosting your site contents (for free) on GitHub and just have a pointer directed to it from your domain? I do this with a site of mine and I literally pay $14.99 per year for the domain name and nothing else.

To my knowledge, there's no bandwidth limit but I have to admit I've never confirmed that.

Hi.
I didn't realise github can host pages - interesting... always learning something new. I'll do some investigating.
The x10hosting site where I now hold my files offers unlimited traffic and seem to be a decent speed and gives an easy ftp upload so I can throw files up there easily, but anything can change as I can just point my domain (and subdomains as needed) to somewhere else. Could even host it on my Raspberry pi Still getting to grips with all the options available within the domain control, so experimenting to give the best web experience.