"i'm barely even a computer scientist not a particulary great programmer" what a humble guy

You give a whole new meaning to "full stack engineer."

Dude, you say ''I'm not an engineer'', 98% of the engineers I know would not be able to even remotely understand, yet alone do, what you did there... Well done! This is absolutely brilliant and amazing! 😍

JDH: "I'm barely even a computer scientist" Also JDH: proceeds to build an entire computer from ICs and breadboards

Thanks for the shout-out to my work on the DUO Adept!

If this guy isn't a particularly great programmer I am so screwed

Thank you for making this video, the more in-depth look at the jdh-8 was very interesting!

I loved seeing this! Pretty fun stuff :D. I've built a few toy CPUs over the years. My most recent was an 8 bit CPU more similar to the MOS 6502 but with more consistent addressing modes. (and an incompatible instruction set).

Congratulations on your effort, and thanks for providing these details.

When ever I lose motivation to code I just watch a jdh video. Sumn abt them just makes me want to get better and maybe one day do something like this

crazy crazy guy! I remember debuging couple of Ben's modules, problems with capacitance, decoupling capacitors, broken wires, bad chips, clock signals, power module,.... Doing it on 5 times larger project must have been a nightmare. Great job, all the best

This is so good :D Always love your vids

Very Good.- thank you for taking the time to make the video

Can’t wait to see what software you make for it!

Amazing work, certainly does well on your C.V.

You're a legend Building your pc completely literally by yourself!

I love the project! I think it would be fun to see a reimplementation on pcbs to avoid wiring, perhaps addressing some of the points for improvement you mentioned in the last video. :)

Bro u have done it thanks for the explanation

Yo we're blessed with two videos in one day!

I'm so glad I found your channel

This is amazing! You are such a cool person!

Hey, can you test it's performance? A collegue of mine and I have build several ben eater inspired PC's. We have a 4-bit PC, a 8-bit ben eater identical one and one 16-bit computer. All run at 2 Mhz. We build it just like you did it. For performance testing we run a simple prime number calculation. I post the "pseudo" code that the 16-bit one runs down below. For the other we had to get creative to count to 10000, but we did it on each one. The 16-bit PC takes 46 Minutes without a discrete bit-shift extension card and 32 seconds with the discrete bit-shift card. Without it has to do multiplication and division by addition xD The 8-bit took about a day to get to the prime number of 4000 so testing to 10000 wasn't feasible. Maybe you can test the algorithm on your PC and send some Benchmark results.

That macro assembler alone is a _huge_ project. Much more advanced then many assemblers from back in the day. Personally I would have used a well known macro assembler to lower macro assembly to your assembly. Then again, this whole project is about doing everything by hand :D

Your projects are absolutely amazing! Giant inspiration. What do you work with when not doing these freetime projects?

this dude talented af!

Nice video! You should have flipped the value of the Y instruction bit so that zero bytes are always effectively a NOP though!

jdh: "i built a computer from scratch get rekt noobs" also jdh: "i don't know how to pronounce CMOS"

I made a processor in Minecraft, and I thought that was a generally painful process when it came to debugging and getting everything working. Now that looks like a little baby processor compared to this thing. You're out of your mind, in a good way.

Ta Loco, “I’m not a good programmer”. Jokes aside I love the videos, keep entertaining!

This is really impressive. I have to ask, what's your background?

this is really cool! i'm also working on a custom CPU build and I was wondering how you do memory mapping exactly? I can think of various approaches but they all seem really bad. thanks!

I tried x86 a while ago but I wasn't really able to do any meaningful programs. The way jdh explains things did actually answer many of my questions! Thank you dude I really appreciate your videos :)

people(professors and students) get annoyed by me when i ask this type of low level hardware related question i used to had in mind and they couldn't explain it and try to ignore my question all the time. and when i tear the internet a part i found it's simple(not that simple but can be understandable) but made up of lot's of different things in it's own unique structure and that's what makes it more complicated. the reason i wanted to know all this so that i could make my own things in my own style to become independent and also this is fascinating to see how it all works at a fundamental level..

I think xor operation would be better than nor. And you can free one or even two instructions space by making subtracting possibility with no adding, then it will be still possible to add by (a - (0 - b))

This is awesome! Question about the CMP instruction: In the spec you have it as CMP^ reg, imm8/reg -> reg = reg + imm8/reg It looks like it's defined the same as the ADD instruction and also the destination register is modified. Is this a mistake in the spec or is CMP the same as the ADD instruction? If this is a mistake, I know most architectures define CMP as basically a subtraction which modify the flags, but then throw out the result, is this how JDH-8 works? Apologies if this was answered in the video and I missed it.

"not a good programming guy" yeah, and then there's me, Master electricla engineering who has to look up syntax for loops

Everybody is so excited about his homemade computer while I'm just here staring at his perfect hair 😳

Hey very good video. I wanted to ask if there is a list of the required components somewhere ?

"not a partically good computer programmer" PROCEEDS TO MAKE A DECENT VERSION OF MINECRAFT IN 24 HOURS

this is sooooo cool.really

This seems to have been almost a mini moon-landing-mission-type of operation. You cannot have arrived already. This is so much more now. This computer and the process you followed to get there needs a proper post-mortem. I would like to see Ben Eater or even the other legend James Sharman, review you computer and extract much more educational value from it. I am amazed by your dedication and I personally think that you more than deserve the 100k subscribers. So when will version 2 of the computer come out - surely this was not a once-off thing?

16 bit commands, the word 'command' is the word you search or 16 bit addresses (depends on the context, commands and addresses usually do not have to be the same length)

It's easy to criticize design choices made, but nice to see you dived into it without spending ages on perfecting the architecture. The joy is in making it, not getting it perfect as that ofte results in stuff never being started on in the first place. And the fact that you even have a full graphic display is rather daunting where most would be happy with a few flashing leds or at most a small 2x16 chars lcd screen.

1:58 Close but not quite first one (at least what is now generally considered as first) was intel 4004.

I’m a computer “scientist” and I think you did a great job building a functional computer system. I plan to build a simpler one and probably upload the project video to my KZfaq channel.👍

Crazy !!! Where are you working now ?

Use an SST Flash chip for the ucode, flash access times on that chip are like less than 100 ns

this is fucking sick bro! congratulations 👏

Are the 3, Z bits after the Y bit in the instruction layout section don't care bits in the case where the Y bit is not set?

He says he's not an engineer, as he proceeds to make a thesis material

yo, dude. Nice build. Can it display video? If so how do you update frame buffer memory? You gotta stress test your graphics card with the nyan cat gif

If this guy isn't a particularly great programmer I am so screwed. You're a legend Building your pc completely literally by yourself!.

can you release the logisim files for the computer? :=

Mate, I have no words

Next, writing your own programming language and compiler to run on your custom cpu

Hey, did you ever get around to making the PR for those extra ICs you added to logisim-evolution?

Good chanel od grafa

computer scientist + electronics engineer physician: hold my bear

People are building a friggin computer from scratch and here I am studying for a physics final. My life sucks lol. Great video. Your whole journey from emulating it to actually building one was really inspiring. I'll try building one too after my exams are over haha :)

ur wild bro

I wanted to build a PC with transistors, just lots and lots NPN transistors. Never got around to it. I never did any math or anything but between the CPU/MEM/GPU id probably need like 500K for the most basic 8bit 8KB/2KB PC lol the power requirements would be hilarious.

Nice

Hello, jdh. My name is Alex, I long time wanted to make the same homemade computer. In the last week I have been studying various home computer projects (one of them diy transistor computer with 7 mhz clock). May I ask you a couple of questions about some aspects of the implementation.

thankyou very much ,please show me the shematic because i can't made it with logisim

Only an idea if someone build it self you could use the ZZZ bits for more advanced / complex CPU instructions ! if (Y==0) if (ZZZ==0) argument is im(8/16) else ZZZ is a 1 of 8 selector in fast zero page memory (8 x 16 bit pointer locations or 8 x 16bit memory registers or 8 x16bit counters or 8 x 16bit predefined port addresses ... or any 8 more CPU instructions)

How did you research for this? Who did you learn how to do this from?

please 4k fullscreen

Next: I built my own universe and reality from scrath

Hello, I am a student from Switzerland who is slowly approaching the Matura. For the Matura we have to hand in a paper, about any topic. I want to build my own CPU, respectively emulate it with a hardware description language. Therefore I would like to ask if the goal is too difficult for a 17 year old. If not, what resources should I use to learn most effectively. Btw. the video was awesome!

Do you know if anyone has made a LLVM-compatible DIY computer? I know it would entail a truckload more work but it would really be an awesome thing to have multiple language supported with just another backend. Even implementing a backend is another ordeal altogether, apparently :)

New Episode!

nice

26:23 Your JLE macro is broken. You are missing a test case. ;)

Outstanding work. When he designed the Apple I and II, Steve Wozniak did not even design the CPU himself. So this work puts you above Woz, in a way. Dedicating an instruction to switch memory banks is something we sorely needed in the 80s, and yet no processor I know of provided it (not in the successful machines on the market at least). Thinking about it, you were very close to designing a multitasking CPU (move the registers to memory, as you suggested somewhere else, assign one program and set of registers per bank, and add periodic or programmatic bank switching).

yes a totaly understand

DAMN

Would you mind sharing your vimrc config file?

Is there an alternate architecute other then load/store?

Am i the only one who realize how handsome this guy is?

next thing we know hes gonna be doping his own silicon

any extra registers are vector instruction registers, simd instructions

i really wish that logisim has a dark mode

Amazing build. To get that clock speed up how about chilled water cooler? Then you could have a mass of pipes on top of the mass of wires. And possibly the only water cooled breadboard computer in the world. %-)

graf poleca

You should make your own fully code language.

When will you do a Minecraft update again ?

This guy actually built his OWN computer by HIMSELF. What a legend

"I'm not a great programmer" Also jdh "today we're going to be making Minecraft in C without a game engine"

We all know the original title was "I built my own computer. by hand.". BTW nice video JDH. Now make an OS for this.

u r god

holy shit since when do you have 118k subs when I started you were at like 1.5k

hi bro, i want to ask question but its not about this video. i'm CS student, how did you learn C programming language? i really wonder it.

but can it run crisis? (or even linux.)

damn

Ok now write a C-compiler!

the fact that you wouldn't even call yourself a "particularly great programmer" is giving me an existential crisis.

For some reason he kinda looks like Dr. Luka Kovac frm ER drama

#Blessed Cause u posted today lol

Are we gonna ignore the fact this man so f HANDSOME🗿🗿?

Bro I'm here to watch it run pong on the real hardware :)