This morning I've added more products to my new "quickshop" page to make ordering in the UK easier and a lot more convenient.

https://www.samcoupe.com/quickshop.htm

Buy It Now buttons added for the range of hardware I've designed and released for use with #RC2014 and compatibles (such as #ZXSpectrum and #SAMCoupe via my bus interfaces, MicroBeast, Minstrel 4D, systems with RC2014 / RCbus expansion ports)

Released in June 2020:
SID SOUNDCHIP Interface
- Use the famous #C64 soundchip with your #Z80 system. Also works with ARMSID and SwinSID. Includes 50/60/100Hz interrupt generator.

Released in July 2020:
GRAPHIC OLED Interface
- Add a 128 x 32 OLED module to your project.

Released in September 2021:
ZX TRUE TONE (ZXTT)
- 1.7734MHz Clock oscillator for use with Ed Brindley's YM/AY Soundcard.

Also available on my Tindie and eBay stores - see profile. Plus much more information on: https://2014.samcoupe.com

There's a product design review going on at #RC2014 Towers this morning and the team are putting their suggestions forward for the power LED circuit.
#LegoMinifigForScale

You know you're making progress when you send a pull request to the forth2012 test suite. Admittedly, it's a small fix to a tiny bit of code that wouldn't compile for a case-sensitive implementation, but....

My new #RC2014 Dual Clock and Reset module arrived in the post from @rc2014 earlier today.

I thought I'd try filming the build, so here is roughly 30 minutes of construction time compressed down to 5 minutes.

https://www.youtube.com/watch?v=bWGb-0BYP6k

This evening has been mostly fingerprinting the various #RC2014 models and ROM images as the TTL Logic Probe sees them.

Tomorrow will be mostly trying to represent them in a clear and easy to follow troubleshooting guide.

In the meantime, the TTL Logic Probe is now available on #z80kits https://z80kits.com/shop/ttl-logic-probe/

Newly minted - Pico #MZ80K release 1.2.4 - bugfixes and initial support for the Japanese character ROM.

Runs on a #RaspberryPi Pico mounted on a Pimoroni VGA Demo Base, #RC2014 Pi Pico VGA terminal card or on the self-contained RC2014 RP2040 VGA terminal card.

More details:

https://z80.timholyoake.uk/the-pico-mz-80k/

Spending Sunday morning working on a new creation.

It's alive! Its ALIVE!

First new #RC2014 product launch of 2025 is a 16C2550 based Dual UART Module. Available exclusively on #z80kits this module is essentially a dual version of the 16C550 UART module that was launched in the final hours of 2024

https://z80kits.com/shop/16c2550-dual-uart-serial-module/

If you have a RomWBW based RC2014 this is perfect if you want more serial ports. Up to 4 ports are supported by default, or up to 8 with a custom ROM build

More fun with DTMF tones and the #RC2014

This time I’m using a custom DTMF encoder chip and feeding the results back to my DTMF decoder board to check it’s working correctly.

I've written up my work on building a DTMF decoder module for the #RC2014.

This allows the RC2014 to decode the musical tones from a touch tone phone.

https://www.robertprice.co.uk/robblog/decoding-dtmf-tones-on-an-rc2014/

More fun with DTMF tones and my #rc2014.

This time I’m using the AY-3-8910 card with @quazarsamcoupe’s ZXTT clock add-on to generate DTMF tones that my new DTMF card is successfully decoding.

The LEDs on the decoder card at the front show the binary codes for the decoded tones.

Write up coming soon.

I’ve soldered up my new #RC2014 project. It’s a DTMF decoder, so I can decode tones from a touch tone phone. Here it’s hooked up an encoder module for testing. A full write up coming soon.

For those of you who are interested in my latest project, #dxbbs you may like to know that I've done some code cleanup, renamed existing variables and introduced new ones, especially for the message base files. this is in preparation of handling multiple message bases.

I've also implemented "message flagging/unflagging" in combination with the msg_purge routine. The latter takes some time to process all messages since it actually creates a re-indexd copy of all files for the selected message base.

So I thought it would make sense to "flag" messages for deletion, effectively excluding these from being listed or read and then have the option to physically delete them and re-arrange the message file during a maintenance window, where there is enough planned downtime for such an action.

Let me note that the code is by no means an example for proper #forth programming. I'm not there yet, but in case you are interested, here's the link:

https://gitlab.com/ufud-org/rc2014-dxforth/-/tree/main/bbs?ref_type=heads

#z80
#bbs
#rc2014
#cpm
#dxforth
#retrocoding

I still don't really know what to do with my #RC2014 system.

Achievement unlocked

#Fuzix now runs on the classic 6800 CPU using the rcbus-6808 CPU card.

Took a few small compiler fixes and some other bits and pieces being finished off but with zu2's work on the 6800 code generator all now appears good. Startrek anyway

#rcbus #rc2014 #retrocomputing #8bit #6800

I guess #BlackFriday sale is almost over now, but #CyberMonday sale is on just about to start! Just over a day left at https://z80kits.com with **15% discount** on all #RC2014 base kits, core modules, expansion modules and backplanes/enclosures. You just need the discount code **BFCM2024** at checkout. (Valid until Monday night)