Robert Price
@robertprice.bsky.social
📤 164
📥 163
📝 223
Generation ZX.
reposted by
Robert Price
Hoffman
4 days ago
Do you like 68000 assembly source code? Then here is some..
github.com/djh0ffman/TT...
loading . . .
GitHub - djh0ffman/TTE_Circumvent: Revision 2024 Amiga Intro
Revision 2024 Amiga Intro. Contribute to djh0ffman/TTE_Circumvent development by creating an account on GitHub.
https://github.com/djh0ffman/TTE_Circumvent
1
29
7
I tried to expand on my
#RetroChallenge
and build an
#RC2014
module that could decode the 8 bits returned from a NES controller using just 74 series logic and a 555 timer. It didn’t work. I think I have the timing slightly out so some of the logic is triggering too early. I need a dual scope!
loading . . .
5 days ago
1
1
1
The
#RetroChallenge
may have finished, but I have a bonus post. The SNES controller is an extended version of the NES controller. So, I have reworked my
#RC2014
NES controller module and Z80 assembly language example code to use the SNES controller.
www.robertprice.co.uk/robblog/rc20...
loading . . .
RC2025 – Part 9 – Using a SNES controller - Robert Price
Extending the RC2014 NES controller module to use a SNES controller instead, and using Z80 assembly language to read it.
https://www.robertprice.co.uk/robblog/rc2025-part-9-using-a-snes-controller/
7 days ago
0
1
1
reposted by
Robert Price
Quazar
10 days ago
Great to see the ZX-RC2014 Bus Interface in use here to use Robert's RC2014 NES Controller module on the ZX Spectrum! The Bus Interface gives your
#ZXSpectrum
two
#RC2014
expansion slots and with an optional ZX through port too. Info/Purchase at:
2014.samcoupe.com
add a skeleton here at some point
0
8
2
It's the final day of the
#RetroChallenge
so I've written about my finished project. In this post I explain how I was able to connect my RC2014 NES Controller module to a Sinclair ZX Spectrum, and how I hacked the Manic Miner code so I could use my new module.
www.robertprice.co.uk/robblog/rc20...
loading . . .
RC2025 - Part 8 - Playing Manic Miner with an NES controller - Robert Price
Attaching an NES controller module to a Sinclair ZX Spectrum computer and hacking the classic game Manic Miner to use an NES controller.
https://www.robertprice.co.uk/robblog/rc2025-part-8-playing-manic-miner-with-an-nes-controller/
11 days ago
0
8
3
reposted by
Robert Price
Moose Allain
17 days ago
My most popular cartoon by a long chalk is also oddly niche, in that it mostly appeals to a generation who remember the song it refers to and enjoy the nostalgia for their youth. I can draw one for you if you like.
www.worldofmoose.com/collections/...
49
1202
237
I teased this a few days ago, but here's the latest part of my
#RetroChallenge
I've been able to put together the various parts I've already written up, and I can now move a pixel on a LED matrix using an NES controller on my
#RC2014
.
www.robertprice.co.uk/robblog/rc20...
loading . . .
RC2025 - Part 7 - Moving a pixel with a NES controller - Robert Price
In this article I show how to move a pixel around an 8x8 LED matrix display by using an NES controller on an RC2014 computer.
https://www.robertprice.co.uk/robblog/rc2025-part-7-moving-a-pixel-with-a-nes-controller/
18 days ago
0
2
1
I've been using the 8x8 LED Matrix module on my
#RC2014
recently as part of the
#RetroChallenge
I've written up how it works, and also added a demo program in Z80 assembly language converted from the original BASIC example.
www.robertprice.co.uk/robblog/rc20...
loading . . .
RC2025 – Part 6 – Using an 8x8 LED matrix from Z80 assembly language - Robert Price
Looking at how the 8x8 LED matrix module works on an RC2014 computer. Example code is given in both BASIC and Z80 assembly language.
https://www.robertprice.co.uk/robblog/rc2025-part-6-using-an-8x8-led-matrix-from-z80-assembly-language/
19 days ago
1
2
1
I've written about creating a reusable Z80 subroutine to read the NES controller on my
#RC2014
computer as part of this year's
#RetroChallenge
To test it out, I output the returned value to LEDs.
www.robertprice.co.uk/robblog/rc20...
loading . . .
RC2025 - Part 5 - Writing a reusable Z80 subroutine to read the NES controller - Robert Price
Creating a reusable Z80 assembly language subroutine to read an NES controller. The subroutine is tested by outputing the received byte to LEDs.
https://www.robertprice.co.uk/robblog/rc2025-part-5-writing-a-reusable-z80-subroutine-to-read-the-nes-controller/
21 days ago
0
3
1
More progress on my NES controller module for the
#rc2014
#RetroChallenge
. I am now able to move a pixel around on an 8x8 LED module using the NES controller. Lots to write up over the coming days.
loading . . .
22 days ago
1
2
0
I’ve plugged in the 8x8 LED matrix for my
#RC2014
for the first time in ages. The first job was to rewrite Shiela Dixon’s smiley example from BASIC to Z80 assembly language to help me understand how it works. It’s definitely working :-)
23 days ago
1
2
1
More work on my
#RetroChallenge
today. I was taking the out from the NES controller, reassembling it on the
#RC2014
, and showing the output in the red LEDs. I then noticed that I’ve accidentally reassembled the byte backwards. Oppps
loading . . .
23 days ago
1
8
0
I've been working a bit more on my
#RetroChallenge
, getting an
#RC2014
to talk to a NES controller. In my latest post, I explain how I've used Z80 assembly language to work out which buttons are being pressed and to print this back over the serial terminal.
www.robertprice.co.uk/robblog/rc20...
loading . . .
RC2025 - Part 4 - Bit-banging a NES controller using Z80 assembly language - Robert Price
In this article I bit-bang an NES controller from my RC2014 using Z80 assembly language. The results are then sent to the serial terminal.
https://www.robertprice.co.uk/robblog/rc2025-part-4-bit-banging-a-nes-controller-using-z80-assembly-language/
25 days ago
0
5
1
I've soldered up the PCB for my RC2014 NES Controller
#RetroChallenge
Thankfully, it all seems to work, so I've written about how to use this from MS-BASIC.
www.robertprice.co.uk/robblog/rc20...
loading . . .
RC2025 – Part 3 – Bit-banging a NES controller from BASIC - Robert Price
In this article I use MS-BASIC on an RC2014 computer to talk to an NES controller using bit-banging.
https://www.robertprice.co.uk/robblog/rc2025-part-3-bit-banging-a-nes-controller-from-basic/
28 days ago
1
3
1
More work on the
#RC2014
NES controller
#RetroChallenge
this evening. I have designed a circuit and PCB that should allow me to bit-bang the NES controller from my RC2014 computer.
www.robertprice.co.uk/robblog/rc20...
loading . . .
RC2025 - Part 2 - Designing a PCB for bit-banging a NES controller - Robert Price
Designing a PCB to allow me to bit-bang an NES controller on my RC2014 computer.
https://www.robertprice.co.uk/robblog/rc2025-part-2-designing-a-pcb-for-bit-banging-a-nes-controller/
about 1 month ago
0
4
1
It's official, I'm taking part in this year's
#RetroChallenge
I'm planning on getting an NES controller working with my
#RC2014
computer.
www.robertprice.co.uk/robblog/rc20...
loading . . .
RC2025 - Part 1 - How does the NES controller send data? - Robert Price
For this year’s RetroChallenge, I am hoping to interface an NES / Famicon controller to my RC2014 computer. The NES controller has 8 buttons: Up, Down, Left, Right, Select, Start, A, and B. The cable ...
https://www.robertprice.co.uk/robblog/rc2025-part-1-how-does-the-nes-controller-send-data/
about 1 month ago
1
3
1
That’s my
#RC2014Assembly
name badge module built and working. The LEDs are connected to the bus so I can see what is happening in my
#RC2014
in real time. I did have to remove the LED on the RX pin for it to work when using a serial terminal. This is a great little module.
about 2 months ago
1
3
0
reposted by
Robert Price
Robin Ince
3 months ago
The increasingly far right seem to have infiltrated pretty much everything now - even a political party led by a former human rights lawyer who used to let refugees sleep on his couch makes “a country of strangers” speeches - racism and hatred emboldened every day
9
216
46
reposted by
Robert Price
Trans+ Solidarity Alliance
3 months ago
The EHRC is not changing course on their bathroom ban. They don’t care what the consultation said. So what happens now? 🧵
archive.ph/inGpF
5
202
114
@miltonhide.bsky.social
at the Eastbourne farmers market.
4 months ago
0
3
3
reposted by
Robert Price
The National Museum of Computing
4 months ago
Calling all RC2014 builders & 8-bit enthusiasts! Join us - Sept 20th and share your practical implementations, Witness Microsoft BASIC & Z80 machine code demos & custom hardware. Link:
ow.ly/pteE50WiQ7G
#RC2014Community
#RC2014
#Z80
#8bitComputer
#DIYComputing
loading . . .
RC2014 Assembly
This event provides a unique opportunity to explore the practical implementations and diverse applications of the RC2014
https://ow.ly/pteE50WiQ7G
0
8
7
It’s not everyday you find a Spanish galleon docked in your local harbour when you go out for a bike ride.

#Eastbourne
#naovictoria


fundacionnaovictoria.org
5 months ago
1
5
1
reposted by
Robert Price
Prof Scarlett McNally
5 months ago
My new
@bmj.com
article. About
#dementia
. Increasing. Needs care, intervention and prevention. £42billion cost. 1/3 of us will care for someone with dementia. Healthier environments reduce major risk factors for dementia. Our families and UK economy can’t afford not to.
www.bmj.com/content/389/...
loading . . .
Scarlett McNally: Healthier environments and prevention can help us manage dementia better
Some celebrations are tinged with feelings of shame or sadness. At a cherished relative’s 90th birthday recently, I confided in her oldest friend that she was happy but living a different life from wh...
https://www.bmj.com/content/389/bmj.r1163#:~:text=People%20need%20healthier%20environments%20to%20reduce%20the%20major%20risk%20factors%20for%20dementia.&text=As%20doctors%20we%20should%20value,can't%20afford%20not%20to
1
7
3
reposted by
Robert Price
Robin Ince
5 months ago
A work in progress (with a content warning attached) caused by seeing how
#pride
month has given papers permission to write more dismissive / dehumanising words on the trans community
loading . . .
9
136
40
Thanks for a lovely enjoyable show at The Lamb tonight
@robinince.bsky.social
and Jo. I had a wonderful evening. Thanks for taking the time to chat afterwards, and sign my copy of Normally Weird and Weirdly Normal.
5 months ago
2
2
0
reposted by
Robert Price
Robin Ince
5 months ago
Reminder that we couldn’t find a bookshop to sell books in Eastbourne tonight but I will be very happy to sign any books and will be hanging about and drinking wine as it has been a hell of a first month on tour
wegottickets.com/event/659747/
add a skeleton here at some point
6
83
21
Disappointed I couldn’t make it to RetroFest, but the seaside makes up for it, and there is also Robin Ince at the Lamb Inn tonight!
5 months ago
1
2
0
reposted by
Robert Price
Jolyon Maugham KC
6 months ago
Kids are locked out of home ownership, burdened with tuition fees, suffer massive poverty, are threatened by the climate crisis and AI, had their live chances whacked by Brexit, have no healthcare support, and are constantly monstered by the press. They don't need "grit"; they need fairness.
74
1057
292
reposted by
Robert Price
Mary Gillis
6 months ago
God I love stories like this. 'Rhythm Nation' used to crash hard drives.
loading . . .
How a Janet Jackson song crashed laptops for 9 years
In 2001, Microsoft support employees made a shocking discovery: Janet Jackson's hit, "Rhythm Nation," could cause laptops to crash. New details have now come to light showing what was done about it.
https://www.pcworld.com/article/2767927/a-janet-jackson-song-killed-laptops-for-nearly-a-decade.html
18
649
207
That’s my
#RC2014
Picasso built and running. Apparently there is also an Easter Egg I need to find.
7 months ago
1
4
1
I visited the excellent The Museum Is Not Obsolete by Look Mum No Computers in Ramsgate. I had no idea this was there, but I was so glad I stumbled across it. Well worth a visit!
loading . . .
7 months ago
1
6
0
Bring back the 1980s. This is the Sinclair cabinet at the Micro Museum in Ramsgate.
7 months ago
0
2
0
reposted by
Robert Price
L Break Into Program
7 months ago
Mrs B: “You’ve not been drunk-ordering vintage computer stuff whilst I’ve been away have you?” Me: “No, no. I was completely sober” Mrs B:
2
34
1
I've written up how I got my ZX Printer compatible Alphacom 32 printer working on my
#rc2014
www.robertprice.co.uk/robblog/usin...
loading . . .
Using a ZX Printer on an RC2014 - Robert Price
How I was able to interface a ZX Printer compatible Alphacom 32 printer to my RC2014. I have included a circuit diagram and example Z80 code.
https://www.robertprice.co.uk/robblog/using-a-zx-printer-on-an-rc2014/
7 months ago
1
3
0
reposted by
Robert Price
Binary Dinosaurs
7 months ago
Lorraine, the Amiga 1000 prototype. Awesome.
add a skeleton here at some point
0
11
2
reposted by
Robert Price
Robin Ince
7 months ago
Put up by Katy Brand today - this is the story over and over again
98
9793
2566
I have reworked my Z80 assembly language code, and my RC2014 can now print to the Alphacom 32 (ZX Printer compatible) printer. The lights on the digital IO card just show the current line being printed. I’m very pleased with this.
loading . . .
7 months ago
0
4
1
reposted by
Robert Price
Prof Scarlett McNally
7 months ago
Please come to this FREE event "Good Future" for the public at East Sussex College. (Literally at
#Hastings
train+bus station). Sat 5April 10am-3.30pm. Drop-in. (I'm speaking at 10.30am.) How to make the future better (+ health).
www.energisesussexcoast.co.uk/events/hasti...
@ecobourne.bsky.social
0
4
4
reposted by
Robert Price
Julian "Jaz" Rignall
7 months ago
This 35-year-old CVG April Fool was pretty cool! Cobbled together using crappy old bits of tech, this amazing device allegedly plugged into the back of an Amiga and enabled it to play Mega Drive carts. We got calls from distributors. Readers hopes were dashed. We had some lolz.
7
56
20
My
#RC2014
is talking to my Alphacom 32 (ZX Printer compatible) printer. I’ve not got the software right as it’s not printing what I was expecting, but it’s a good start.
7 months ago
2
3
1
That explains why my circuit wasn’t working. The 74LS595 chips I bought on AliExpress are fake. The printing lifted straight off.
8 months ago
0
0
0
That explains why my circuit wasn’t working. The 74LS595 chips I bought on AliExpress are fake. The printing lifted straight off.
8 months ago
0
0
0
reposted by
Robert Price
Dee Nitemarez - V I D E O G H O U L
8 months ago
and if you also wanna slap one onto your MSX, Speccy, Master System, MD or whatever.... here ya go! I printed mine at 2 x 2.5cm, 300DPI
add a skeleton here at some point
1
22
5
Going back to my 555 timer circuit and breadboarding it out to make sure it works. Here it is with a counter correctly incrementing. The next step will be to speed it up and have it triggering a shift register.
loading . . .
8 months ago
0
1
0
The debugging LEDs look pretty, but they shouldn’t be doing this. I suspect an error in my 555 timer circuit. I have bodge wires in place, but I don’t trust it.
loading . . .
8 months ago
0
1
0
Fresh delivery from AliExpress. The good news is that I got the capacitance value right, just not the voltage. I don’t think these are going to fit in my PCB. Oooppps!
8 months ago
0
4
0
@binarydinosaurs.co.uk
I’m not sure if you’re on Facebook, but this ZX81 looks just your thing. Lots of custom EPROMs, homemade case, etc. Someone clearly loved stretching the limits of their Zeddy. It’s coming up for sale shortly.
www.facebook.com/share/p/1AE2...
8 months ago
1
1
0
reposted by
Robert Price
Stein van Oosteren
9 months ago
(Toute) la discussion sur la sécurité routière. Par
@tomflood.bsky.social
1
59
16
Can the SID-Ulator module for the
#RC2014
be used to generate DTMF tones? I think it should be possible, but I can't successfully decode the generated output. I've written up what I did, and if anyone can see any obvious mistakes I'd love to hear about them.
www.robertprice.co.uk/robblog/tryi...
loading . . .
Trying to generate DTMF tones using the SID-Ulator on the RC2014 - Robert Price
Can the SID-Ulator module for the RC2014 generate DTMF tones? This module emulates the SID chip found in the Commodore 64.
https://www.robertprice.co.uk/robblog/trying-to-generate-dtmf-tones-using-the-sid-ulator-on-the-rc2014/
9 months ago
0
0
0
My new
#RC2014
Dual Clock and Reset module arrived in the post from Z80Kits earlier today. I thought I'd try filming the build, so here is roughly 30 minutes of construction time compressed down to 5 minutes.
www.youtube.com/watch?v=bWGb...
loading . . .
RC2014 Dual Clock and Reset module build
YouTube video by Robert Price
https://www.youtube.com/watch?v=bWGb-0BYP6k
9 months ago
0
2
0
Load more
feeds!
log in