Amiga BREAK! - The Poor Persons Action Replay? and How Can I Improve It?

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I picked this up a while back, and was curious exactly what it could achieve for such a simple looking device. Attached to it is a variable resistor and a switch, and with that you can freeze and selectively slow down games playing. But how does it work? And can we improve it? Well, in this video we'll take a closer look
AMIGAAAAAAA!
HRTMon: aminet.net/package/dev/debug/... or github.com/wepl/hrtmon
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📖 Chapters
(00:00) The Plan
(00:20) Unpacking
(01:20) Installation
(01:58) First Experiment
(02:12) First Test - A Demo!
(03:00) Next Experiments
(03:08) Lemmings
(03:46) Lotus Turbo Challenge II
(04:22) Qwak (shocker!)
(04:56) Super Twintris
(05:21) 68000 CPUs are also in the Megadrive
(06:21) Sonic the Hedgehog II
(07:39) It's What I Do
(08:01) How Does It Work? (Theory)
(10:42) Electronic Test
(11:34) More Action Replay (Introducing HRTMon)
(12:07) Modding for Level 7
(13:28) Testing HRTMon
(13:53) Summary
🎧 Music Used
• "Raving Energy" Kevin MacLeod (incompetech.com)
• "Adding the Sun" Kevin MacLeod (incompetech.com)
• "Blippy Trance" Kevin MacLeod (incompetech.com)
• "Shiny Tech" Kevin MacLeod (incompetech.com)
• "Fluffing a Duck" Kevin MacLeod (incompetech.com)
• "Chipper Doodle V2" Kevin MacLeod (incompetech.com)
• "Newer Wave" Kevin MacLeod (incompetech.com)
• "Aerosol of my Love" Kevin MacLeod (incompetech.com)
• "One Sly Move" Kevin MacLeod (incompetech.com)
• "Professor Umlaut" Kevin MacLeod (incompetech.com)
• "The Builder" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
creativecommons.org/licenses/b...
• "Depth Fuse" French Fuse
• "Push Fuse" French Fuse
Copyright © RobSmithDev 2021-2024
robsmithdev.co.uk
Where appropriate, all efforts were made to trace & obtain copyright holders permissions to reproduce their material in this video.
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#amiga #decelerator #actionreplay

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Опубликовано:

6 июн 2024

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Комментарии : 39

@sacredbanana Месяц назад

You triggered my level 7 interrupt when I saw this in my subscription feed

@RobSmithDev Месяц назад

😂😂 thanks for watching

@Jaw0lf Месяц назад

Another amazing investigation into how it works! Nice job

@RobSmithDev Месяц назад

Thanks

@wimwiddershins Месяц назад

Just the kind of shenanigans I like. Great stuff mate 👍

@Lyvarious Месяц назад

I do not know why RU-vid recommended this video but I'm happy that it did.

@RobSmithDev Месяц назад

:) we all have to trust that the ‘magic’ algorithm knows what it’s doing - glad you liked it

@bjarkeistruppedersen8213 Месяц назад

So it is just PWM'ing the halt pin - that's a neat trick 😃

@RobSmithDev Месяц назад

Sure is, very simple!

@mrkitty777 Месяц назад

But not Agnus, but the official Action Replay also controls Agnus

@RobSmithDev Месяц назад

There’s a deep dive into the Action Replay here - they both trigger using a Level 7 Interrupt, and the rest, we’ll take a read jvaltane.kapsi.fi/amiga/howtocode/actionreplay.html

@RavenWolfRetroTech Месяц назад

I like seeing projects like this that could have been done back in the day. I love my RGB2HDMI but it just has a little too much pie!

@RobSmithDev Месяц назад

This is actually really old! I think it was probably sold about 20 years ago

@jjdigitalvideosolutionsllc5343 Месяц назад

This is something that my brother & I could have used back in the day for Test Drive. We wanted to build a steering wheel, instead of using the joystick. We didn't know anything about electronics or have access to the resources to learn anything. But we thought if there was a way to make turning the wheel left or right pulse the left/right joystick input at a variable rate, it might achieve what we wanted. A small turn would result in short pulses and the full turn of the wheel would be like holding the joystick left/right. We made a steering wheel, gas/break pedals, and a makeshift shifter. It just didn't work as well as we hoped.

@RobSmithDev Месяц назад

I looked into that type of circuit after and it’s actually quite a common approach although I’d never seen it before. When I was younger made a steering wheel for lotus although it was very basic and used a home made tilt switch to detect the rotation (was literally a marble wrapped in tin foil moving around in a cardboard tube) kinda worked but not as good as your idea

@phillupson8561 Месяц назад

Maaaaaaaaaan I'd forgotten about super twintris, my mum and I spent so much time playing that against each other when I was a kid, good times!

@ColdRFusion Месяц назад

I wouldn't have exposed wiring directy from the CPU outside the case, some sort of housing would be good for the resister & switch.

@RobSmithDev Месяц назад

It’s only a temporary mod - it’s not like I’ll leave it connected - if I was I’d build a case for it

@claudiurus7307 Месяц назад

Cool and simple. I never own an Atari nor a Amiga. Seeing so many videos about them I almost convinced myself to buy one but then I have realized that for me its a train that left the station. Anyway nice video!

@RobSmithDev Месяц назад

Thanks for watching. Emulation is probably your best option these days if you did want to try it out.

@more.power. Месяц назад

Hi Rob I have learnt so much from your video's they are great. Cheers

@RobSmithDev Месяц назад

Thank you

@gbraadnl Месяц назад

7:00 Circuitbending... 9:00 however this does not change the clock-frequency... interesting yeah.

@moshly64 Месяц назад

You can do the same thing on the C64 or any 6502 by applying the same signal to the RDY pin (wait state input). There was a cart that had a 555 timer PWM circuit.

@RobSmithDev Месяц назад

Cool!

@Jdbye Месяц назад

Thought it would just be hijacking the clock signal, like how the GBAccelerator works. But this is kinda more interesting. And perhaps more reliable, as hijacking the clock signal could lead to a desync between the CPU and other components.

@RobSmithDev Месяц назад

Indeed and it’s probably why the rest of the hardware behaved so well with it too. I was expecting it to be messing with the clock signal too

@skeleton_craftGaming Месяц назад

Yes, but this also leads to crashes if you turn her up too high.

@ryanfurness8943 Месяц назад

Yet another cracking video Rob, keep 'em coming mate. On a totally unrelated note, can you please tell me - 1. What are the names of the music tracks you used in this video ? 2. Have you / are you planning to appear on TWIR (This Week In Retro) podcast ?

@RobSmithDev Месяц назад

All of the tracks I use are listed in the video description. Two are from the RU-vid music library, the others are from here: incompetech.com/music/royalty-free/music.html

@RobSmithDev Месяц назад

And TWIR? I think someone has to suggest me to them for that to happen

@ryanfurness8943 Месяц назад

@@RobSmithDev Thanks Rob, sorry I missed the show notes - Doh. I'll see if I can make the suggestion to the guys at TWIR (Hope I don't need to be a fully fledged Patreon to make the odd suggestion).