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Amiga 1200 internal FPU anyone can do this! 

Chris Edwards Restoration
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E290 In this episode the Amiga 1200 gets an internal FPU!. why? why not the socket is there. lets see how much it actually helps! This will greatly benefit STOCK or anyone who has a card with no FPU (like my TF1230) it was super simple, and cost less than 30$ all in. and only took about 30 minutes from start to finish. AIBB beachball results from 61.3 seconds down to 18!, if you purchase a fpu all you need is a 20mhz or better. up to you.
tools used in this video:
Tonya - a hammer
Johnard IC extractor
www.amazon.com/Jonard-EX-2-Ex...
DIP Pin Straightener
retrorewind.ca/dip-chip-strai...
Helmet of Goober:
www.amazon.com/Headband-Magni...
Chinesium solder rework station “853D”
www.ebay.com/itm/313701800310
generic ebay us search for a 68882 PLCC
www.ebay.com/sch/i.html?_from...
the exact sockets i purchased
www.ebay.com/itm/322601446846
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2 мар 2022

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Комментарии : 131   
@neozeed8139
@neozeed8139 2 года назад
didnt know the 1200 had a fpu socket on the board, naturally they saved pennies by not populating it. cool hack!
@OddObsolete
@OddObsolete 2 года назад
Awesome stuff! I’ve been wondering if it was possible to solder an FPU to that slot, so this was an interesting watch!
@Acill
@Acill 2 года назад
Nice video Chris! I have been telling people you can do this for years and have done several myself. Its one of those why not things I say when people ask.
@krecikowi
@krecikowi 2 года назад
I read about it ages ago and co conclusion was that those were to slow.
@bitdigital8052
@bitdigital8052 2 года назад
Making AMIGA great again 1 FPU at a time.
@ChannelReuploads9451
@ChannelReuploads9451 2 года назад
"You're gonna get bridged but that is okay". That is why you use flux, lots a flux, preferably, Amtech, that stuff is a god's gift. You can drag solder a treat with that. Flux, again I say, FLUX.
@billkaroly
@billkaroly 2 года назад
in the early 80's I worked at a company in Fremont California and we had an Amiga for development research. there was a program that created a chunk of a planet with mountains, valleys etc. it was cool. it just amazed me.
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
Scenery animator. I believe. I made several terrains myself. I still have them saved as .iff format
@billkaroly
@billkaroly 2 года назад
@@ChrisEdwardsRestoration I would love to have an Amiga if I could find one cheap enough.
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
Me too!
@AmigaMuadib3D
@AmigaMuadib3D Год назад
That must have been either Scenery Animator or Vista
@AmigaMuadib3D
@AmigaMuadib3D Год назад
Plus, there is a plugin for importing .dem landscapes made Vista into Lightwave. I have to make an episode about it...
@f1lupo
@f1lupo Год назад
Thanks for this Chris👍 Been wanting to do this simple mod for YEARS just to fill that empty FPU slot in my 1200 and also have a 68060 that doesn’t have an FPU and this is the solution for me rather than having to sell my car to buy an 060 with FPU!
@lg.bus114-Mario.
@lg.bus114-Mario. 2 года назад
You make my day , again ;) tnx Mr.Chris . Greetings.
@a4000t
@a4000t 2 года назад
I believe the FPU should also help pic rendering and such on Ibrowse/Aweb/Voyager especially with FPU capable datatypes
@saabfeverfrank
@saabfeverfrank 2 года назад
This is bloody fantastic! I`ve wondered for decades now what that empty space was. I often wondered if it was for an FPU or an 030. Now I know!!!
@300BaudStudios
@300BaudStudios 2 года назад
Nice job Chris!
@10MARC
@10MARC 2 года назад
Great stuff! I had heard that having an FPU on the motherboard, and then having one in an accelerator does not work as the Amiga has no way to turn off the on board FPU. You can always just pop it out, though!
@jediknight2350
@jediknight2350 2 года назад
i always knew i could do this your video has helped now im going to do this mod theres no harm in putting one in and for my 3d will speed it right up many thanks great video. your next video should be upgrading the onboard cpu must be able to.
@tomas352frano
@tomas352frano 2 года назад
Thanks for sharing!!! Great info....
@telonio9
@telonio9 2 года назад
Great video. I have a blizzard 030/40 on my 1200 which I have to use some years now. I don't remember if blizzard 030/40 has already fpu installed but I will check it. Thanks for the video.
@matthewjones9177
@matthewjones9177 4 месяца назад
Hey Chris, we have things in common. I'm left handed and broke ha ha. Another great video buddy, thank you.
@rebeccaschade3987
@rebeccaschade3987 2 года назад
I was actually curious about whether this was possible or not. Quite a cool little mod. I have a GVP A1230 Series II accelerator card in mine, so I've got a 50MHz FPU on that, but it's cool to see that this is possible. :)
@ridiculous_gaming
@ridiculous_gaming 2 года назад
A GVP? Someone invested a ton of cash here.
@gadgetman5210
@gadgetman5210 2 года назад
excellent video 👍
@comsoft
@comsoft Год назад
Ive installed fpu thanks to this video.
@zekstra78
@zekstra78 2 года назад
A long time ago 10+ years I did so. FPU on my 1D3 mobo (yeah, 1D3!) worked flawless, except with newer accellerators like ACA... I guess the issue was line buffering at ACA end.
@cullmaster7361
@cullmaster7361 2 года назад
Another helpful Video Chris 👍🏻 Have seen these markings on the boards for a while and also noticed Commodore traced out for an internal clock battery that was never used above the clockport connector. I take it you can’t just replace the EC020 CPU and XTAL to make this faster still? I’m probably guessing the custom chips like Paula etc.. wouldn’t handle it?
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
You can and go as high as 28mhz
@cullmaster7361
@cullmaster7361 2 года назад
@@ChrisEdwardsRestoration That’s good to know 👍🏻 Thanks Again 🙏🏻
@HoldandModify
@HoldandModify 2 года назад
FP--U MAN! Hehe. Goood stuff and such a fun mod! I’ve been staring at that empty space on the 1200 board for decades and wondered.
@johnwiesen4440
@johnwiesen4440 2 года назад
I fitted a FPU to my ACA 1233n card. It works very nice. I had to be very careful where I got the chip from there are many fake ones out there. It also runs at the same speed as the 60830 at 40Mzh. I also fitted the hard membrane for my keyboard It is very good and the ribbon cable is a bit longer.
@herdware
@herdware 2 года назад
Been curious about this and now I know. I have a spare 68882 and the first ACA 1230 which doesn't have provision for an FPU. I guess I pretty much have to do it now. :)
@MuzafferB74
@MuzafferB74 Год назад
I'm so jealous everything geeky on the table and the wall! What's the screen below the MOS Tech neon on the wall please? Can't take my eyes off of it!
@MuzafferB74
@MuzafferB74 Год назад
Is it Divoom Pixoo Max?
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration Год назад
I have the max yes
@MuzafferB74
@MuzafferB74 Год назад
@@ChrisEdwardsRestoration Thanks very much Chris 🤘
@AshtonCoolman
@AshtonCoolman Год назад
Lift the clock pin on the FPU and run it direct to the 28mhz crystal for MORE POWER!
@DaniloSavioni
@DaniloSavioni Год назад
where i can find info about this methode ? thanks !
@AshtonCoolman
@AshtonCoolman Год назад
@@DaniloSavioni CRG's RU-vid channel has a video about it posted 1 month ago.
@AshtonCoolman
@AshtonCoolman Год назад
@@DaniloSavioni ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-nSZkTYaRy0E.html
@f1lupo
@f1lupo Год назад
woah this would be amazing if it could match your accelerator card MHz🤟
@raymondmookhram5127
@raymondmookhram5127 2 года назад
Hilarious : ‘ You can practice on PC-cards’
@spawnterror
@spawnterror 2 года назад
Indeed ;)
@mjmonjure
@mjmonjure Год назад
Wonder if this is possible with an ATA1234 installed. They discourage installing the FPU on the ACA1234 FPU slot.
@TPau65
@TPau65 2 года назад
Really nice! I recently got an A1200 with TF1260 and 68LC060. This might be a good option to get an FPU upgrade, as I will not even try to get a "full" 68060 nowadays. Today I had my first SMD (de-) soldering experience, as I did the "E123C and E125C stability patch". As all SMD parts on the backside of the A1200 board are glued into position, it was really hard desoldering these caps! But the Amiga seems to be stable now! The FPU socket seems to be a piece of cake by comparison, well... somehow. 😁
@kcolbinyar
@kcolbinyar 2 года назад
Just about to install my TF1260LC too. Did you have stability issues then, with the 1260? What was your method for de-soldering? Have you done this FPU fix yet?
@TPau65
@TPau65 2 года назад
@@kcolbinyar My Amiga was very unstable before doing the patch. Just opening/closing some windows in Workbench let the system freeze after a while! After the patch, all seems to be ok now. For desoldering, Flux, lots of Flux and patience! 😉 I don't think I'll do this FPU thing in the near future, if ever.
@spawnterror
@spawnterror 2 года назад
@Darko Deacon What did you exactly do please? I might need this advice in a few days when TF arrives. Thanks!
@stevelaminack1516
@stevelaminack1516 2 года назад
Where did you get that ribbon cable for the keyboard with the hard card at the end?
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
Sordan.ie its called the hard membrane. Sold for all the clamshell amiga models
@ClassicTrialsChannel
@ClassicTrialsChannel 2 года назад
I recently fitted a 40mhz fpu into my blizzard a1220 8mb(back in the day it I added a 33mhz fpu) i used a 50mhz crystal to see if it I could run faster. the fpu only over clocked to 44mhz but hey still a win.
@8BitRetroJournal
@8BitRetroJournal 2 года назад
So Commodore put an FPU slot on the motherboard and never used it...last minute design change. Just crazy....I wonder how much it would have upped the cost of a 1200 for them. Thanks for sharing!
@a4000t
@a4000t 2 года назад
back in the day fpu's were still costly. now they are a dime a dozen. was likely just a cost cutting measure.
@notacop1477
@notacop1477 2 года назад
It would have enabled wider use of FPUs. Good times
@SammYLightfooD
@SammYLightfooD 2 года назад
9:20 Never seen such a version of ShowConfig. Is that new with OS 3.2 ?
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
Sure is
@gregdunlap7538
@gregdunlap7538 2 года назад
Haha, I did this mod a few weeks ago, out of curiosity! The FPU won't work with IComp ACA cards though; the FPU won't be seen. It obviously works great with the TF1230; even at 14Mhz it's still a noticeable bump in performance over the 68030 doing the math. I really notice the improvement with VistaPro and CineMorph. I'm using a 68882 that came with a Furia, and it seemed dead - I assumed it was a fake; decided to try it here and it actually works at 14 Mhz!
@gregdunlap7538
@gregdunlap7538 2 года назад
As a followup - I isolated the FPU clock pin and connected it to the 28Mhz clock signal, and now it's running at 28Mhz!
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
What pin and where?
@gregdunlap7538
@gregdunlap7538 2 года назад
@@ChrisEdwardsRestoration Pin 11 of the FPU. Cut the trace on each side of the via to it on the bottom of the board and put in a bypass wire around it; then wired the via to E131R for 28mHz.
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
@@gregdunlap7538 thanks going to give that a go!
@gregdunlap7538
@gregdunlap7538 2 года назад
@@ChrisEdwardsRestoration Cool! BTW, in case it matters, I connected to the side of E131R toward the rear of the motherboard, the side that connects to the Budgie chip.
@ninline2000
@ninline2000 2 года назад
Is it possible to change the crystal for the system to a faster one? Or will that mess up board timing?
@Koka2609
@Koka2609 2 года назад
It will mess it up
@bradhansen2065
@bradhansen2065 2 года назад
Chris, where did you get the Firmware update for the TF1230? Searching the net an no luck. Thanks
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
Exos forums and john hertell website
@bradhansen2065
@bradhansen2065 2 года назад
@@ChrisEdwardsRestoration Hi Chris, I still need help. I have searched the net and can not find any place to buy the Sockets I need for FPU. Can you point me to a site? Thank you.
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
I linked them in the extended desx
@ant64b
@ant64b 2 года назад
Yay a Chris Edwards video. :)
@obsoletepowercorrupts
@obsoletepowercorrupts 2 года назад
Does that FPU work if the trapdoor accelerator is 68040 (and also if the 040 is the sort with no FPU)?
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
Sure does!!
@craigbudd9866
@craigbudd9866 2 года назад
How does it run with out the accelerator card.
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
Awesome!
@AmigaMuadib3D
@AmigaMuadib3D Год назад
Really cool! How does LW fare with it?
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration Год назад
works like a treat! , I was going to tap into the 28mhz clock or even put a 40mhz crystal for its own clock, but decided i dont want to hack it all up more than it is
@AmigaMuadib3D
@AmigaMuadib3D Год назад
@@ChrisEdwardsRestoration amazing! Yeah, its enough of an effort and an achievement as it is. Congratulations, show us some modelling and/or rendering instances whenever you can! :)
@mark12358
@mark12358 Год назад
@@ChrisEdwardsRestoration OK, so you just knew it and simply avoided to do that, on purpose. It's a point, however it's "doable" and not so difficult, at all. Loved your CDTV and A3000T videos! Cheers, M
@obserwator100
@obserwator100 2 года назад
Is this going to work with TF 1260 LC ?
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
it will work with anything without a included FPU. if you have a fpu on the card it will just use the cards. so no harm done. only benefits.
@gunnaraw
@gunnaraw Год назад
I have read that 040 and 060 don’t work with external FPUs because they lack interfaces for that.
@ThomasChristensen
@ThomasChristensen Год назад
What can you _actually_ use it for, besides getting a better result in a test, will it benefit normal production programs in Workbench, some games (3D Wireframe)? To put into perspective: I have a Toshiba T3200SX with a 386-SX16 (love it to bits). When I purchased it back in the late 90's I installed an Intel 387 FPU - also just because I could. Never found any use for it, didn't see any boost in any programs🤔
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration Год назад
Any image program , 3d program. Lightwave, imagefx adpro , ppaint etc. greatly improves any of those functions
@Ama-hi5kn
@Ama-hi5kn Год назад
The applications and/or games have to be programmed to make use of an FPU. If you don't use a version with FPU support, nothing is gonna happen.
@Zentauri77
@Zentauri77 Год назад
@@ChrisEdwardsRestoration I remember playing around with a fractal/mandelbrot program back in the late 90ies which required a fpu. But I don't remember the name.
@lgf1978
@lgf1978 2 года назад
QUESTION: If you lift the clk pin on cpu (and/or) fpu. connect it to the 28MHz part of the crystal. will this work?
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
Lol its still half of the crystal. Idk. Give it a go
@daved1818
@daved1818 2 года назад
I put an fpu in my blizzard 1230 and technically I should have put in a dedicated clock for it, I just bodged the clock pin to the 40mhz clock that goes to the 68030 and its been working fine for 20 odd years.
@gregdunlap7538
@gregdunlap7538 2 года назад
Yes - I just did that and it's running fine at 28Mhz now!
@DavePoo2
@DavePoo2 2 года назад
F P You - have done a good job
@sarreqteryx
@sarreqteryx 2 года назад
how fast can the on board 68020 be overclocked reliably?
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
28 mhz. You can tap it directly to the crystal for its max speed otherwise speed of bus
@Zebpro
@Zebpro 2 года назад
I got an FPU on my good old Blizzard 1230MK4, I guess the best thing that could be is someone make a library that takes care of it, like every mathematical things ever done or happening on the hardware side would use it, not only dedicated 3D software, but everything, like some software patch when hard maths are made, if you have an FPU, just use it to compute instead of doing it via CPU, I'm sure it will be a delight. Or maybe it will break software breaks/waits or something, but I'm sure it is posible, I mean, and you know it, "only Amiga makes it possible"... Yeah there are somethings already available on aminet for ages, but when you look at the readme file, it seems it would only benefits for 3D dedicated softwares. So, what's up about that?? :-]
@a4000t
@a4000t 2 года назад
amiga os knows about the fpu. Most programs had a fpu and non fpu version you could install.
@ridiculous_gaming
@ridiculous_gaming 2 года назад
Soldering something so small for me is like being 5 feet tall and expected to pull off a NBA slam dunk.
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
Helmet of goober. And this is 90’s texh. The new stuff is WAY smaller
@Storm_.
@Storm_. Год назад
Would this work for an ACA1233n? I know indivision say they don't support putting an FPU on the accelerator itself, even though there is a section for it. Does anyone know if an FPU on the motherboard will still keep working just like it does with the TF card? Thanks.
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration Год назад
Yup
@johnwiesen4440
@johnwiesen4440 Год назад
I put one on my ACA 1233n card it runs at 40Mzh. I used a socket then fitted a FPU on it. the BIG problem was finding a good FPU. If you get one from China look at the top to see if it had been remarked. I had one that you can see scratches on the top of the chip it went back for a refund. But if you fit a socket or FPU the warranty is void.
@giuseppelavecchia775
@giuseppelavecchia775 2 года назад
Bel video.ho sempre saputo che l'A1200 e' predisposto per la FPU plcc.perche sysinfo su dma/gfx dice ecs agnus?,l'A1200 ha l'aga alice
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
lo fa sempre per me
@giuseppelavecchia775
@giuseppelavecchia775 2 года назад
@@ChrisEdwardsRestoration si ma come fa a dire ecs agnus,se l'AMIGA e' aga
@sfurta
@sfurta 2 года назад
Blizzard 1220/28 MHz Beach Ball 98.84s vs 14.40s with fpu.
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
So not bad then!
@ArneRagnarsson
@ArneRagnarsson 2 года назад
You have everything, exept a real harddrive.
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
I have them just dont use them
@grosnain
@grosnain 2 года назад
how did you get the wide screen display ?
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
I am in a multiscan mode or even dblntsc high res no flicker w overscan settings. Its a nice display
@grosnain
@grosnain 2 года назад
@@ChrisEdwardsRestoration i think i should install some other libs. I am with the basic workbench, for now and don't understand all this new stuff.
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
Copy storage monitors whatever you need to devs: monitors and reboot. Then sys prefs screenmode and choose a new screen bit always say use and not save Until you were sure that it works then go back in and to save
@grosnain
@grosnain 2 года назад
Any 68882 PLCC, or a specific one ?
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
Yup links to everything in extended desc
@grosnain
@grosnain 2 года назад
@@ChrisEdwardsRestoration seen that, but i found different fpu models, so i wonder if i can pick anyone i want.
@wskinnyodden
@wskinnyodden 2 года назад
Why? Well, because you can obviously! Hehehe
@jauspicios
@jauspicios 9 месяцев назад
Well, I saw Jesus here in Portugal.
@patracy
@patracy 2 года назад
That lady got down twice didn't she?
@krecikowi
@krecikowi 2 года назад
What about TF1260?
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
Doesnt that one have a fpu? If no then this will work on any device without one!
@krecikowi
@krecikowi 2 года назад
@@ChrisEdwardsRestoration i Read that 68882 fpu is really slow comparing 060. I have lc version.
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
A blow is better than no
@krecikowi
@krecikowi 2 года назад
@@ChrisEdwardsRestoration I'm not sure. We need some benchmarks 😎
@krecikowi
@krecikowi 2 года назад
Main question. If I have TF1260 and would use this fpu. Can I use software versions written for 060 with fpu?
@lg.bus114-Mario.
@lg.bus114-Mario. 2 года назад
„ im not the best „ hahahaha , yaeh , not . Best from the Best ! ;)
@lorderectus1849
@lorderectus1849 2 года назад
Any chance of putting pimiga 1.5 and version 2.0 on archive.org rather than just through bit torrent?
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration 2 года назад
No
@mark12358
@mark12358 Год назад
CRG - Amiga 1200 FPU Part 2 - Adding a 40Mhz Crystal Oscillator ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-5DYgls1WGAU.html Hi Chris, please take a look, watching how CRG solved this, adding a little piece of hw and wires! Cheers, M
@ChrisEdwardsRestoration
@ChrisEdwardsRestoration Год назад
Yes i stated that in comments
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