@kevindai02 – Hack Club Scrapbook

12:46am

FINALLY CONQUERED WINDOWS. BEHOLD, CUSTOM SATA DRIVERS :tachi_smile:

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Tue, Jul 27

Finally completed my 13 pages of utter BS

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Thu, Jul 15

:intel: got it 2 months later :smiley-twemoji:

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Wed, Jul 14

and here I was hoping copilot can design a CPU… apparently not. guess I get to keep my job for now (cya later suckers)

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Mon, Jul 12

Tall buildings, it's the city!

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Tue, Jul 6

oh boy here goes nothing

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Sun, Jul 4

back to the drawing board :crydeath:

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Wed, Jun 30

Pipeline stalls are now under control (I hope so)

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Sun, Jun 20

Designing a custom CMOS IC. Hope to reach speeds of 110 MHz.

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Sat, Jun 5

Finally got LTSPICE to simulate! An inverter automatically extracted from sky130 std cells, [TT] corner

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Wed, Jun 2

I stole a cubicle for myself. It's mine now.

Tue, Jun 1

Upgraded my RAM to 16 gigs from 8 gigs! My old Kaby Lake :intel: is still chugging along

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Fri, May 28

I think this is mostly correct now

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Thu, May 27

I have to get up at 8:30 tomorrow and it's 2 am and I'm messing around with Falstad circuit simulator for fun :coolsad:

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Fri, May 21

exclusive access :smirk_russian:

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Tue, May 11

I present... formally verified :roo-love: pipeline logic

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Sun, May 9

some interesting benchmarks with "cached" vs "uncached" memory access on HS32. there is an actual visible difference which is cool but kind of bad :floshed:

Sat, May 8

ohmygodohmygodohmygod we got LLVM IR to compile properly!! HS32 now has a very very basic C-compiler :roo-yay:

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Fri, May 7

llc built without errors finally. but will it accept LLVM IR? time to find out!

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Thu, May 6

went to the lab today, CRAZY I tell ya

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Tue, May 4

System decided to bios update in the middle of a meeting :kirby-angy: :screaming-morty:

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Mon, May 3

What an interesting day. Missed the initial optional onboarding though. :roo-oh-no: I live in the middle of nowhere and the package didn't arrive until like 3 pm. Crazy day tomorrow :smiley-twemoji:

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Mon, May 3

Oh no I don't having anything great to post today. Enjoy this super level of gayness I aspire one day to be:

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Sun, May 2

okay second post but I'm absolutely IN LOVE with this desktop background + windows acrylic (don't mind mr. openhardwaremonitor in the corner)

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Sun, May 2

Went outside for 3 hours, nearly biked off a cliff and it started raining. What an adventure.

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Fri, Apr 30

The new JetBrains splash screens are really quite something (awful) so I redesigned it for myself so I won't go blind. The relevant issue this has caused is really quite funny: youtrack.jetbrains.com/issue/IDEA-266149

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Fri, Apr 30

Put lo-fi in the background and life is great. Nothing new today: testing and stabilizing the assembly backend for my custom LLVM port. This is my 4th "porting LLVM" scrapbook post. I'm so creative. Actually since LLVM is now a part of my life, I've added emoting icons for it: :llvm: and :llvm-alt:

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Thu, Apr 29

Porting LLVM in a week (jk). Today: Finally bringing the MC layer to a close with relocations and fixups!

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Tue, Apr 27

My 17$ decommissioned FPGA miner arrived today!! After some cleaning and solder work, it came alive and booted into Linux :ultrafastparrot:

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Mon, Apr 26

Big field

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Mon, Apr 26

The thing I ordered arrived

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Sun, Apr 25

aaaaaand it's back to porting LLVM for me

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Fri, Apr 23

I finally fixed my homebrew CPU's memory access "bug." It wasn't a bug at all. Here's a short demo of 4 programs running on it via the UART bootloader! Also, I wanted to experiment with showing both the hardware and software at the same time (decided to use Zoom for that).

Wed, Mar 24

porting LLVM to my custom CPU!!!! got proper assembly generation!!!!

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Tue, Dec 1

another sneaky peaky, this time integrated into the project wrapper

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Sun, Nov 29

Sneaky peaky number 2. Nice and even core utilization (area) and you can see the power grid too! :uwu_face:

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Wed, Nov 25

Got it to work with the example project 👀 A sneak peek of what's to come

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Wed, Nov 18

Today I got enough courage to try formal verification. Wrote proof for a byte-addressable RAM controller and it passed! (along with identifying some race condition bugs) This uses Symbiyosys with boolector as the smtbmc solver (k-type temporal induction). github.com/HomebrewSiliconClub/Processor/blob/master/rtl/soc/bram_ctl.v#L106

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Sat, Oct 24

at some point, your eyes just start to lose focus and everything looks the same

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Sat, Oct 17

some more shots of it because what the hell why not (time for testing, after midterms are over ;-;)

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Thu, Oct 15

omg so much sexier with populated holes

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Thu, Oct 15

So sexy 🤤

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Sun, Oct 11

Oh yeah! It's shippppeddddd :3

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Fri, Oct 9

Guess what arrived today ^~^ (secret contents)

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Thu, Oct 8

I finally placed the PCB order ^~^ :summer-of-making: -> :aom: -> Eternity of Making? :sam-1: Also, Digikey 1 day shipping in Canada for only $8?! What is this madness!

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Mon, Sep 21

I thought I'd show off for the first time how my homebrew CPU is developed and how amazing "FPGA hell" is (also, I don't have a scope, donations are welcome 🤣)

Tue, Sep 8

First day of school! Found our university-provided Linux shell (apparently they've got a windows one too, but it's offline :sad_pepe: ). Not a VM but a huge ass 256-processor cluster with no sudo (can't complain I guess). Also, they apparently have a GPU compute cluster somewhere too 👀 Asynchronous online learning be like :shiba-sad:

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Tue, Sep 8

The class schedule is still nonexistent, didn't make it into advanced maths because I'm dumb, had some friends over and a wonderful time (still kinda sober yay), and implemented microcode syntax highlighting. Things could be better but things could be worse I suppose :shiba-stare:

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Mon, Sep 7

Time to FLEX my new microcode assembler written in 2 days using BISON and FLEX (haha pun totally intended)! Programming in C has never brought me more joy in life, maybe my vibes will finally return someday and I will stop crying. Verified the microcode isn't some random trash by assembling it manually, then running it through the logic simulator. With all the designing of the instruction set done, it is time to implement pine16's instruction set architecture. For the record, the microcode looks like:

mov_r@[0000..0000][1000..1000]
mov_r:
    RAW rs, op, rd &gt; END

alu_r@[0001..1010][1000..1000]
alu_r:
    RAW rd, latch,
    RAW rs, op, rd !&gt; END

This is exciting. But now, time to party my ass off before school starts.

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Sat, Sep 5

No one said making a CPU would be this hard. It's a giant symphony from hell, with no end in sight; debugging hundreds of signals like this at once is an absolute nightmare (they don't even fit on my screen) - so much so to the point that I'm testing more than developing. Please send help, I don't know how much longer I will stay sane for. Comparing this to the first post though, I have come a quite long way which is nice.

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Sun, Aug 30

Big sad not cured but I finished this. It's pretty cute.

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Sun, Aug 30

Time to (not) let ✨anxiety✨ ruin someone else's exam.

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Sat, Aug 29

Time to cure the big sad.

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Sat, Aug 29

Today, decided to compile an old English social issues project (almost 2 years ago now) into a music score video. The topic was a heavy one (mental health issues in lgbtq+ minorities) and the music was quite terrible but reading all the quotes again was quite interesting.

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Fri, Aug 28

Some more shitposting. Go away. --- Phrygian Gates - John Adams (1978) Keeping myself busy from myself, here's some modern (minimalism) music; it's almost a soundscape. I die at the end.

Thu, Aug 27

I hate life 💀

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Wed, Aug 26

Lol after making friends with some hack clubbers, my github feed has now been contaminated by the unholy sea JS. There's only 1 last good sign of civilization (even though I hate the qloader project itself).

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Tue, Aug 25

So much code yet none of it works (C,e,N) (2058930342979427413254926386263838738879293279451544250614213887182354263636649474892006540782778693, 1976681317924305710587460200285568244095031203169200640258932362305967453879566209551921211163554315, 3711112890917953920313349275463478686525635505349467618802841304007022981993526553825288355294414951)

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Mon, Aug 24

An hour of my life learning this and recording it, totally worth it :meow-party:. The rhythm's kinda off but hey, whatever :bro:

Sun, Aug 23

Shitpost shitpost don't mind the heavy breathing :blobfearsweat:

Fri, Aug 21

Haha sounds like ✨ internalized homophobia ✨

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Thu, Aug 20

Some optimizing the sh!t out of the memory controller (now it's roughly 100 logic cells). Smaller the better! Homebrew CPU Floorplan: Orange/Red = VCC, GND and pins; Blue = Memory controller/Green; Yellow = Debug control logic (small for now); Magenta = UART rx/tx modules (clustered around pin 25/26).

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Wed, Aug 19

More shitposting for streaks :> but I did learn something new today: 1111 should be "oneteen onety one"

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Tue, Aug 18

Tragically underrated.

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Mon, Aug 17

Anthony lied to me :anthony1:

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Sun, Aug 16

Fucking music analysis blog post part 2/5 is finally done and published after 3 days... 👀

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Sat, Aug 15

Yes

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Fri, Aug 14

Started this blog post project thing writing about my favourite pieces of music. Why did I choose a 40-minute, thematically rich work to start? Also, imposter syndrome be like hahaha I'm not even qualified to write things like this :blobfearsweat:. Oh well.

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Thu, Aug 13

Uhh... so here's some attempted improv in lydian... This is just for scrapbook ignore or you'll go deaf :blobnomcookie:

Wed, Aug 12

Updated my website/blog. I kinda like the idea of posting cute small proofs there :3

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Wed, Jul 29

For streaks. Here, you can see how the physical logic blocks are laid out and connected on my CPU. On the bottom left is the UART logic and around the perimeter (upper left) are the memory decoding/interface logic.

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Tue, Jul 28

Oh and this photo here

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Tue, Jul 28

Added a UART controller to my CPU. It can now talk through an Arduino to my PC :D

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Sun, Jul 26

Testbench in Verilog for Pine16 so I can finally safely test new designs (also I don't have a scope, so this is the next best thing).

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Fri, Jul 24

Homebrew CPU is well on its way. Next steps: uop assembler, machine code assembler, c compiler & linker, BIOS and firmware and finally a homebrew kernel and OS (probably port my existing OS or something)

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Sat, Jul 11

Me: Noo you can't number your address bus 15 14 12 7 6 5 4 3 2 1 0 16 13 8 9 11 10. Alliance Memory: Haha numbers go brrrr. Why did I think this was a good idea :deepfriedlaughing:

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Fri, Jul 10

uhh yeah digikey sent the wrong chip haha :flushed_russian:

Thu, Jul 9

Finally! Should I do a live unboxing?

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Wed, Jul 8

We have breadboards, an lcd and a TinyFPGA BX, they weren't kidding about TINY. It's so smol! Ironically, I'm still waiting for the headers to arrive xD

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Wed, Jul 8

Woot woot! Guess what came in the mail today (part 1/2)? Yeah!!! Let's get this party rollingggggg!

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Wed, Jul 8

Floaty floaty :D remember to pull your signals! also can't wait for the solid core wires to arrive

Tue, Jul 7

Aaaahh can't get better than this :)

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Tue, Jul 7

Today is a very exciting day. I was reunited with my beloved arduino and my crazy spontaneous idea of shoving wires into vga ports actually works!! You know what this means? My homebrew cpu might be able to output to VGA!! Waow!!

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Sun, Jul 5

Watching zootopia with @eankeen

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Fri, Jul 3

I had a blast today, took a break from doing nothing to have fun with friends. Also did some timing verification by hand (I still need to learn how to use TimingAnalyzer fluently) to make sure everything is in spec. Finally caved in and added extra protection circuitry; a buffer at the end of the input bus (ditched fancy level shifter circuits as it also doubles as a 5v to 3.3v shifter too!). List should be finalized tomorrow :D

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Wed, Jul 1

Update: I forgot to post this noon so I probably missed the streak. Upon checking my schematics, I realized that, to my horror, my Arduino Uno doesn't have enough pins to program the SST39SF010A parallel flash memory. HOWEVER, I remembered that my CPU design also doesn't have enough pins to support reading from flash either! But by using a time-multiplexed address + data bus along with my northbridge, I can easily program the flash IC! So, I yoinked the northbridge and hooked the Arduino to it. Yeah!!! We're back in business babbyyy!

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Tue, Jun 30

Whoa, exciting!!! :partyparrot:

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Tue, Jun 30

Ah yes, the Pinecone Processing Unit :blobevil:

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Tue, Jun 30

Sch- sch- sch- sch- sch.... SCHEMATICS! Rough sketch of what I want. Unrevised. Will probably blow up.

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Mon, Jun 29

Homebrew CPU: what did I do to deserve this? agh, wiring the multiplexed 20-bit address + 16-bit data busses ;-; send help pls

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Sun, Jun 28

After several continuous nights of work, we now have a microcoded execution unit for the custom CPU.

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