Ahead of the #RC2014 dual clock card arriving in the post, I’ve upgraded all the sockets on my Backplane Pro to support the enhanced bus.
Maybe I should just buy a RC2014 Pro as my Classic 2 isn’t looking much like Classic 2 at the moment?
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I have been playing with creating my own serial card for the #RC2014.
I wanted one with tight address decoding so I could run several on my RC2014 Classic 2. I also added a jumper for the CTS line so I could enable that for devices that support it.
As there was spare space, I also added clock and RX/TX LEDs like the Tynemouth Serial card.
The INT, CLK, RX, and TX lines are jumpered so can be connected to the bus if used as the primary serial card.
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I am continuing on my journey exploring DTMF touch tones on the #rc2014 .
This time I am using an AY-3-8910 chip to generate the tone pairs using Z80 assembly language.
https://www.robertprice.co.uk/robblog/generating-dtmf-tones-using-an-ay-3-8910-on-a-rc2014/
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I've been playing with my DTMF decoder for the #RC2014 again.
This time, I've been finding out how to use z88dk's special function registers in C to handle Z80 IO.
https://www.robertprice.co.uk/robblog/using-the-dtmf-decoder-module-for-the-rc2014-from-c/
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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/
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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.
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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.
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It looks like Santa has come early and delivered PCBs for my new #rc2014 project.
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I've been trying to write some C for my #RC2014 Classic II. I thought I'd share how to get a simple "Hello World"program compiled and running on the RC2014 using the excellent z88dk compiler.
https://www.robertprice.co.uk/robblog/writing-c-code-for-the-rc2014-classic-ii-running-scm/
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Does hitting refresh on the JLCPCB tracking page speed up delivery? The PCBs for my next #RC2014 project have been at Hong Kong airport for the past 5 days. I hope they have lounge access and are having a nice time there while they wait for their flight.
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Who needs The Spectrum when you could have The #RC2014 instead.
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Work in progress for my #RC2014 “Zimon” game using Z80 assembly language. I get can get input and output from and to my game board. Sound is coming from the AY sound module (with ZXTT clock). Next up will be a random number generator to generate the game pattern, then playing along with it.
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I’ve just installed the nifty little Quazar ZXTT add-on module to the YM/AY sound card for the #RC2014. I picked this up at the #RetroFest in Cambridge directly from @quazarsamcoupe. It clocks the sound card at 1.7734MHZ so tunes created on the ZX Spectrum sound correct on the RC2024.
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Another great day at the #Retrofest in Cambridge. So many interesting exhibits and exhibitors. Can’t wait for next year!
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The prototype Sinclair ZX Spectrum at the Centre for Computing History in Cambridge.
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I have released the schematics, gerbers, and example source code for the Rotary Encoder module for the #RC2014. I designed this for the 2024 #RetroChallenge .
https://www.robertprice.co.uk/robblog/rc2024-part-17-source-code-and-schematics-released/
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The updated version of my ROM Select module for the #RC2014 Classic 2. It just adds a ZIF socket and switches instead of jumpers. With the additional height it makes it easier to swap which ROM image is in use.
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The #RetroChallenge has drawn to an end. I look back at what I learnt and achieved with my Rotary Encoder for the #RC2014 project.
https://www.robertprice.co.uk/robblog/rc2024-part-16-retro-challenge-completed/
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I've put together my work on the Rotary Encoder for the #RC2014 #RetroChallenge and built a music player.
Tracks can be selected using the rotary encoder, shown on the LCD, and played on the YM2149.
https://www.robertprice.co.uk/robblog/rc2024-part-15-building-a-music-player-that-uses-the-rotary-encoder-module/
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The two new versions of the Rotary Encoder Module for the #RC2014 that I have designed for this year's #RetroChallenge have arrived.
I've soldered them up and tested them, and they work perfectly.
It looks like I'm on track to complete the #RetroChallenge tomorrow.
https://www.robertprice.co.uk/robblog/rc2024-part-14-new-rotary-encoder-pcbs/
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