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ikubun by fsqrt [web] & jetlag
screenshot added by provod on 2018-12-01 11:25:57
platform :
type :
release date : december 2018
release party : TokyoDemoFest 2018
compo : wild demo
ranked : 2nd
  • 56
  • 3
  • 0
popularity : 64%
  • 0.95
  • 1
alltime top: #2225
  • frag frag [code, visuals, size optimization]
  • provod provod [softsynth prototype, music]
added on the 2018-12-01 11:25:57 by provod provod

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Great 256b should have a great tunnel.
We need moar!
rulez added on the 2018-12-01 11:58:55 by 100bit 100bit
very aestethic :)
rulez added on the 2018-12-01 12:43:58 by wbcbz7 wbcbz7
Très cool. I'm mostly impressed with the music. Needs around 33000 cycles to run smoothly. I wonder to what kind of retro hardware 33000 cycles roughly correspond?
rulez added on the 2018-12-01 14:06:01 by svo svo
really nice music and visuals to support the music
rulez added on the 2018-12-01 14:44:09 by waffle waffle
Awesome! 33000 cycles seems to be like a 486 DX4 100 or correct me..
486 66 MHz 26800
Pentium 100 77000
rulez added on the 2018-12-01 15:42:05 by Buckethead Buckethead
good looking tunnel!
rulez added on the 2018-12-01 15:54:16 by Alpha C Alpha C
the visuals are kinda boring. okay, it looks nice but still not fresh enough for me personally. but damn, then i realized that is has music which sounds amazing. overall a nice package!
rulez added on the 2018-12-01 16:01:32 by sensenstahl sensenstahl
impressive with the cool music
rulez added on the 2018-12-01 16:25:07 by Weyland Yutani Weyland Yutani
wow, with music, great, like it!
rulez added on the 2018-12-01 16:48:55 by Asato Asato
So that's the final version of somehow? Nice
added on the 2018-12-01 18:13:29 by HellMood HellMood
@HellMood: It is! The title translates as "somewhat". :D

It's technically more of a remix, or a 2.0. Not an entirely new product, but at this point it's too different from the original content-wise to call it a mere "final". Glad the guys saw enough merit in releasing at separately; I think the result deserves recognition. Excellent way to close a productive year with one of the very best 256bs out there.

Hopefully provod will do a follow-up stream soon, I'm really excited to hear about all the optimizations and the tech.
rulez added on the 2018-12-01 19:11:11 by moozooh moozooh
rulez added on the 2018-12-01 20:11:57 by skarab skarab
Is it just me, or didnt i hear this music in a prod before?
added on the 2018-12-01 22:03:27 by rudi rudi
As moozooh said it, a very good remix to somehow :-) Thanks you included the source. May be you guys can check my recent how to if you can add some info/tricks from your side in that section on the sizecoding webpage. May be about the instrument generation ?
rulez added on the 2018-12-02 16:00:04 by Kuemmel Kuemmel
That has lovely music and vivid colors
rulez added on the 2018-12-02 16:01:19 by Optimus Optimus
Nice tunnel and I'm still amazed at your synth!
rulez added on the 2018-12-02 16:08:11 by mantratronic mantratronic
rulez added on the 2018-12-03 08:34:33 by MKM MKM
very nicely done!
rulez added on the 2018-12-03 09:05:13 by zeebr zeebr
so nice! <3
rulez added on the 2018-12-03 12:26:20 by gentleman gentleman
excellent audio
rulez added on the 2018-12-03 12:37:05 by noby noby
rulez added on the 2018-12-04 08:37:09 by tifeco tifeco
Wow, superb achievement.
rulez added on the 2018-12-04 13:02:40 by Dma-Sc Dma-Sc
How is it possible ?!
rulez added on the 2018-12-04 13:41:47 by Black Dragon Black Dragon
soundtrack. I'm so confused (yeah, in good way)
rulez added on the 2018-12-04 16:27:48 by FMS_Cat FMS_Cat
Remix of Somehow. Descent prod.
Special thanks to the PC Speaker version :-)
and I'm also waiting for the how.it.is.made stream by Provod.
rulezcdc added on the 2018-12-04 22:57:51 by TomCatAbaddon TomCatAbaddon
That’s crazy
rulez added on the 2018-12-05 12:16:31 by hadhad hadhad
One of the best 256b! Nice music.
rulez added on the 2018-12-05 13:32:05 by ham ham
Very impressive
rulez added on the 2018-12-05 22:19:24 by Emufr3ak Emufr3ak
Awesome musics (and cool visuals) for 256b.
rulez added on the 2018-12-05 22:31:17 by mad mad
rulez added on the 2018-12-06 02:17:05 by hole hole
Changed my CDC from "somehow" to this. I still think it's just the final "somehow" and am a bit puzzled by the re~release, but really, who cares. This is the better version for sure ;)
rulez added on the 2018-12-06 18:58:13 by HellMood HellMood
Ok coding
rulez added on the 2018-12-07 09:06:24 by Radiant Radiant
Wow, music too.
rulez added on the 2018-12-08 02:45:26 by AntDude AntDude
This indeed was initially supposed to be a final version of somehow, but amount of work put into making this from somehow is actually larger than was put into making of somehow from scratch. Almost all of it was done by frag, so many kudos to him! I was just tuning music and synthesizer bits.

Note that the archive also contains sources for the intro, and the C music livecoding toolchain that was used to prototype synth and make the music.

Now that we feel that this thing is finally over, I'm now free to stream about it (and to write an article). Likely thursday next week, so stay tuned!
added on the 2018-12-08 10:46:20 by provod provod
Looking forward to it =) It would be nice to integrate this into http://www.sizecoding.org/wiki/Main_Page, as study or directly into the topics. Or at least link to it ;)
added on the 2018-12-08 14:59:05 by HellMood HellMood
rulez added on the 2018-12-08 23:43:27 by bitl bitl
256 bytes, how? O_o
rulez added on the 2018-12-09 08:28:01 by baah baah
rulez added on the 2018-12-09 09:17:35 by Mystra Mystra
wow, 256b bar raised!
rulez added on the 2018-12-09 14:16:27 by wullon wullon
I'd like to understand this.
rulez added on the 2018-12-09 14:24:31 by Zavie Zavie
looking at the code, replacing
Code: add al, 52 out 0x43, al mov al, 60 out 0x40, al salc out 0x40, al

Code: add al, 52 - 32 out 0x43, al mov al, 60 out 0x40, al

saves 3 bytes (Replacing 2byte access with 1byte access). Tested with Covox on DosBox and with PC Speaker on FreeDos.
added on the 2018-12-12 10:09:05 by HellMood HellMood
Now if we optimize the tunnel routine, replacing this
Code: fild word [bp-7] ;load x<<8 as dl:bh and y<<8 as dh:dl fld st0 fmul st0 inc bp jnz _load ;>x x*x y y*y faddp st2 ;>x r*r y fxch st1 ;>x y r*r fsqrt ;>y x r fidivr dword [si+(r0-start)] ;>y x r0/r ;stack top is [bp-2] fistp dword [bp-2-9] ;bx=(r0/r)>>8 ;r0/r can be > 32767, and we save it as dword ;overwriting old sp value (discarded after popa), bx and dl fpatan ;>angle fimul word [si+(c_rad-start)] ;angle=[0..~65536] fistp word [bp-2-4] ;ch=angle>>8=[0..255]

with this
Code: fild word [bp-7] ; x fild word [bp-6] ; y x fpatan ; arc fst st1 ; arc arc fcos ; cos(arc) arc fimul dword [si+(r0-start)] ; l*cos(arc) arc fidiv word [bp-6] ; l*cos(arc)/x arc fistp dword [bp-9] ; arc fimul word [si+(c_rad-start)] ; scarc fistp word [bp-4] ; -

then - for the price of one blinking pixel - 4 further bytes are saved =) It's the adaption of Sizeoptimizing the tunnel to the "ikubun" environment.

Finally, if we alter the "LUT for rotation speed" to "imul word [bx+si]" (-1 byte), the PC Speaker Version also fits into 256 bytes =)
added on the 2018-12-12 11:12:14 by HellMood HellMood
@HellMood: what! this is illegal! I can barely understand what frag does, and now this! :DD (this is awesome btw, thanks!)

Anyway, the explanation-stream is scheduled to be tomorrow, Thursday 2018-12-13 at 14:00 UTC (which is 21:00 NOVT local time). I will mostly focus on the audio-synthesizer part of this, only briefly talking about other things.
Here's a twitch event, but I'll be restreaming to various other streaming services as well.
added on the 2018-12-12 13:37:02 by provod provod
I will definitely watch it =)

There is room for even more optimization for sure, but at one specific point, you should invest one extra byte : somewhere between "mul di" and "pusha" do a "xchg bx,ax". That reconnects the fitting two bytes of Y on the stack (DL+BH -> DL+AH), so there is no precision loss. It looks much cleaner this way.

BB Image
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added on the 2018-12-12 15:31:44 by HellMood HellMood
impressive prod for 256b! and kudos to hellmood, your patches improve the quality even more ;)
rulez added on the 2018-12-13 09:06:20 by neoman neoman
Thanks very much for the stream! I assembled all the tricks to one asm/com archive : ikubun_opt.zip It's 247 bytes, and one less if you remove the "XCHG BX,AX" refinement
added on the 2018-12-13 17:05:59 by HellMood HellMood
Good stuff, HellMood! The improvements just won't stop coming. :D
added on the 2018-12-13 18:30:12 by moozooh moozooh
This is was 1990 "Denuvo". No one still cant actually reverse-engineer this beatifull coding in 1990. Still after 1990 it is not fully known what The Whale actually does. Someone tried, but failed.

I even pay for you 50, for deep analyzing this masterpiece from 1990.
Some tried, some noticed it still does some traps etc...so not properly reverse-engineered.


added on the 2018-12-13 19:39:49 by moredhel moredhel
rulez added on the 2018-12-15 19:47:42 by wertstahl wertstahl
Woa! Well spent 256b!
rulez added on the 2018-12-15 21:25:29 by raer raer
This is pure sexual chocolate, baby. The music is particularly very solid.
rulez added on the 2018-12-18 00:49:11 by Negostrike Negostrike
Great russian 256b demo released in Japan :)
rulez added on the 2018-12-20 17:14:54 by Queen_Luna Queen_Luna
rulez added on the 2018-12-30 23:31:31 by spritus spritus
awesome 256b!
rulez added on the 2019-03-27 08:39:37 by roudoudou roudoudou
Well deserved Meteoriks award
rulez added on the 2019-04-19 21:43:47 by rudi rudi
Missing thumb for awesome soundtrack while also providing some pleasing visuals.
rulez added on the 2019-04-23 13:14:31 by Saga Musix Saga Musix
Super thumb! 👍 Blown away by the music and visual combo in this and not a general midi piano in sight.
rulez added on the 2019-04-23 13:19:38 by djh0ffman djh0ffman
rulez added on the 2019-05-17 11:54:27 by nagz nagz
Very impressive bytes!
rulez added on the 2019-05-20 01:26:36 by Byproduct Byproduct
Never heard a 256b sound like this!
And it has an effect too??
rulez added on the 2019-10-27 19:58:57 by andr00 andr00
rulez added on the 2019-11-15 00:59:11 by Emod Emod
Pretty cool
rulez added on the 2021-04-04 23:14:52 by p01 p01
i thought i thumbed this up already..
rulez added on the 2021-04-29 17:19:44 by Flashira Flashira
synth in 256b and also looks decent!
rulez added on the 2021-04-29 17:21:19 by psenough psenough
thought I had thumbed this one too; also excellent!
rulez added on the 2021-04-29 17:21:45 by ferris ferris
Great sound synth!
rulez added on the 2023-10-06 18:09:51 by Jin X Jin X

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