My first #rc2014 PCB design - FT245

Previous #breadboard abominations interfacing a FT245 to a #rc2014 have been done largely from memory and having several webpages open.

I figured it was time to actually capture a #schematic and I also updated the logic to include bit 7 of the 6850 control register (interrupt enable) and an open collector interrupt request.

Rebuilt it with the new logic using the schematic and it all still works, along with better interrupt capability.

Still a mess though!

Any recommendations for #rc2014 #CPM software?
#askingforafriend

The little SAM Coupe PCBs I made to go on the top of my new SAA1099P Soundchip Interface (for RC2014 and compatibles) looked so good I've got extra made to make them available as pin badges!

Grab yours here:
https://samcoupe.com/quickshop.htm

Ok, I’ve got the FTDI FT245 working in place of the Dual SIO card on the #rc2014 Pro, for SCM and BASIC. It allows CP/M to start (it wouldn’t earlier today), but… the BIOS provided with the Pro kit is expecting a SIO, and not a 6850. Doh! In theory, it should work with the 6850 version of CP/M, but I don’t have that just yet.

I do like that I could connect without needing a separate USB-Serial adaptor, and might still get some boards made. And maybe try and get the 6850 version of CP/M

Quick update to my sub site with the peripherals I've designed and released for use with RC2014 systems and compatibles with the RC style expansion connector.

https://2014.samcoupe.com

- Added the option to include 'SAM Revival 11' with the new SAA1099P Soundchip Interface. If you're curious about sound on the SAM Coupe computer, which uses the SAA1099P, this back issue of SAM Revival magazine focuses on sound on SAM and includes a 19 track audio CD.

- Added more community links.

I bought and assembled this Rosco M68k keyboard a while back. It sends ASCII over serial, so I figured I’d try it with #rc2014. As expected it works fine :-)

#rc2014 Pro - Starts up in SCM, from there I can get to basic and CP/M. The clock boards reset button works fine here too.

In Stock
ZX True Tone (ZXTT) [First released September 2021]

A freshly soldered up batch of ZXTT modules for use with Ed Brindley's YM/AY #RC2014 soundcard to generate the exact 1.7734MHz frequency as used by the AY-3-8910 in the 128K #ZXSpectrum so tones/envelopes are pitch perfect for whatever funky ZX Spectrum music you choose to play!

My main site for my peripherals for RC2014 and compatibles:
https://2014.samcoupe.com/

Also on Tindie at:
https://www.tindie.com/stores/quazar/

Guess what I’m up to this weekend?
#rc2014

Right, no idea how long this will last, but fingers crossed for what could be a pretty neat, cheap, SVGA display from overseas...

Now that I am pretty much all moved in to #RC2014Towers I have spent some time this evening doing some of the more aesthetic stuff. Most of the assembled #RC2014 computers are now on display and the #Z80 artwork I picked up last weekend has been hung.

(A detailed description of most of those machines can be found here https://rc2014.co.uk/limited-edition-and-custom-rc2014/)

@neil If the deal hasn't been signed yet, I might still be in with a chance to sell them a LOT of #RC2014 kits! A super computer with that many Z80 processors is going to be pretty super!

Always fun when you build a new computer and it just works when you turn it on...

Is emulating an old processor #retro enough? What if it's an old processor doing the emulation? Developing a #Z80 emulator on my #eZ80 CPU. Its Zilog all the way down!
https://www.dinoboards.com.au/2025/06/08/green-and-gold.html
#RC2014 #RCBus #MSX