Denial

My latest boards from Elecrow. This time I did a try of their procurement and SMA services. This is their photo and I haven't received the boards yet. But at a quick glans they seam to be quite ok.

Hi, The one I use ( for my personal projects) are OSH Park (http://www.oshpark.com), Elecrow (http://www.elecrow.com), Multi CB (http://www.multi-circuit-boards.eu/en/index.html) and another Chineese manufacturer called Pinsheng (http://www.ps-pcb.com). OSH Park Great especially for smaller boards, ...

I really have no specific plans. If the interest is there but only few I might manufacture PCBs. A bit more interest I might opt for selling mounted boards. Huge demands, fully assembled with plastics might be an option.
Once finished, to some degree, I have no problems getting it open source.

Woa ... excellent!

The new Behr Bonz PCB has made it all the way from the factory in Shenzhen to Sweden ... soon on the way to Canada ...

No rush with the release of your card, perhaps it will be retro even before releasing

Hi, Just a short note. I have added a place on my own server with a wordpress installation for my projects, including my VIC 20 stuff ( http://lovskog.net/projects ). I will add a note now and then here. I will also try to repair the missing images. I am backdating some notes, so the chronology migh...

Really cool work and effort eslapion!! Always interesting when someone actually takes the time and effort to understand, document and explain in detail.

"A little bit better than in the early days of mechanical television" Hillarious

The problem is not if many pins sink the output to "0". The problem is when one or more sink "0" and one or more source "1".

Using port A fixes that.

After a quick look they seem to be identical. Both 6522 and 6532 port 'B' are push/pull although 6522 in some cases only can source 1mA and 6532 seem to be able to source 3mA. Port 'A' has an open drain configuration with a pull-up on both chips. I checked the Rockwell 6522 data sheet which has nice...

The wheels are for the screws in the D-Sub connector. There seams to be a BNC connector. Video or oscilloscope?

Yes. ENIG was never intended for that type of work with repeated inserts/removal. It is usable as contact for springs, dome keys and similar.

But still understandable it is used considering price.

Very nice diagrams Richardc64! I have been thinking on doing that for very long time ... now I don't have to ...

The CPU is never halted. The beauty with he 6502 is that It only needs to work on one of the phases ( phi2 is high ) of the clock. Sure it starts to set up the address and r/w in the first phase but it doesn't need to. The time is enough when the clock is high and data is read or written on falling ...