The Nineteenth Byte

Nathan Merrill

3:00 PM

is on game theory or executing koths?

DJMcMayhem

@Downgoat eas

Downgoat

wat

DJMcMayhem

You wrote "bird of a feather", not birds.

So "eas"

Downgoat

still wat

PhiNotPi

So far I've done a couple things. 1) explain a lot of KOTH subcategories (1v1, small group, large group, arena, custom language, asymmetrical, etc.)

The very evil ROFLcopter

3:01 PM

'the fuck is this character

Downgoat

^

ampercant

PhiNotPi

2) explain the process of writing/hosting a KOTH

Downgoat

halp how to spel amperatncansdkjflajsk;dh

DJMcMayhem

@Downgoat "End" (motion) "append" (insert mode) "s" (the letter)

wizzwizz4

@Downgoat "Ampersand", but you're @Typogoat so who cares?

The very evil ROFLcopter

3:02 PM

@Downgoat Ampersand

Ninja'd

Downgoat

thx

@PhiNotPi suggestion: add picture :D

DJMcMayhem

@PhiNotPi You should do a blog post about the quest for tetris sometime

Downgoat

in PPCG Blog, 13 hours ago, by Downgoat

more photos = better

@DJMcMayhem Phi has a dedicated blog for that (IIRC)

noɥʇʎPʎzɐɹC

...

DJMcMayhem

Maybe port some of the posts over?

wizzwizz4

3:03 PM

@DJMcMayhem They're really long, and very linked.

The very evil ROFLcopter

Zalgo is on on the block

DJMcMayhem

Idk, it seems like a really interesting topic that's slightly out of the norm of what the blog would usually get, but still very related to PPCG

Downgoat

@EriktheGolfer you'll need to submit to the publication

wizzwizz4

@TheveryevilROFLcopter Thanks!

PhiNotPi

I could do a single summary post (given that it's something several PPCG users have been involved with), but all of the gory details will have to stay on my own blog (because sanity).

The very evil ROFLcopter

3:05 PM

@wizzwizz4 It now use a ELIZA-based algorithm

noɥʇʎPʎzɐɹC

Programming languages have double negatives.

Somebody needs to perform a linguistic analysis of programming languages.

wizzwizz4

@noɥʇʎPʎzɐɹC I tried. I lost the ability to use coherent grammar. ~~Luckily I'd taken a backup of the old state of my grammar parser, so I generated training data using the backup and piped it directly into the new one, so~~ NOT A BOT!

The very evil ROFLcopter

stackoverflow.com/questions/40060562/….

noɥʇʎPʎzɐɹC

@wizzwizz4 so relatable. You know I had an experience with a backup of the old state of my grammar parser.

9

Q: Copy image to clipboard with javascript in Chrome only

Is it possible to have javascript copy an image to a clipboard? I'm looking to replicate the "Copy Image" function that Chrome has when you Right/Control click an image in the browser. I've seen solutions for text, some Flash based solutions for text as well. But I'm interested in image data onl...

wizzwizz4

@Downgoat Could you put @Chatgoat into The Block?

The very evil ROFLcopter

3:18 PM

Fun iz coming

Erik the Golfer

@Downgoat I can submit for myself, but not on the code-golf blog :(

Emigna

@Adnan Thanks!

Downgoat

@EriktheGolfer can you send me screenshot of editor page?

PhiNotPi

Can I edit things after they've been published?

Downgoat

yeah

noɥʇʎPʎzɐɹC

3:26 PM

is there any challenge on implementing

Yes (Unix)

yes is a Unix command, which outputs an affirmative response, or a user-defined string of text continuously until killed. == Description == By itself, the yes command outputs 'y' or whatever is specified as an argument, followed by a newline repeatedly until stopped by the user or otherwise killed; when piped into a command, it will continue until the pipe breaks (i.e., the program completes its execution). It can also be used to test how well a system handles high loads, as using yes results in 100% processor usage for systems with a single processor (for a multiprocessor system, a process must...

wizzwizz4

@noɥʇʎPʎzɐɹC Done: for(;;)printf("y");

noɥʇʎPʎzɐɹC

@wizzwizz4 nope, it would repeat stdin, if there is no stdin, output "y"

Hey kids! Wanna burn your CPU? Just run the yes > /dev/null command!

Downgoat

@noɥʇʎPʎzɐɹC ches: for(;;){(IO.prompt()||"y")}

wizzwizz4

@noɥʇʎPʎzɐɹC Hey kids! Wanna burn your CPU? Enter your answer into the terminal now!

4

Martin Ender

40

Q: yes is 91 lines long

yes, from coreutils, is 91 lines long. Many of them are comments, but that is still WAY too long. Write a program that imitates yes: outputting to stdout an infinite stream of "y\n"'s there must be an option to stop it other than killing the process with SIGKILL: but SIGINT and SIGPIPE are fin...

code-golf restricted-source

unfortunately with restricted source

Erik the Golfer

3:32 PM

@Downgoat It's coming.

noɥʇʎPʎzɐɹC

@EriktheGolfer woah dude get uBlock Origin as your adbocker

3x less memory footprint, 3x less CPU time for your browser

Compared to other adblockers

Erik the Golfer

@noɥʇʎPʎzɐɹC What? It's not ABP, it's just based on ABP, but it's much faster than that.

noɥʇʎPʎzɐɹC

@EriktheGolfer Oh, but uBlock Origin is even faster. And open-source. And Adblock is owned by ABP

Performance stats @ GitHub: github.com/gorhill/uBlock#performance

It blocks everything ABP blocks, and more. Same filters.

Nathan Merrill

@PhiNotPi my Character class is really getting quite massive. I've got 27 private members

PhiNotPi

RIP

Nathan Merrill

3:37 PM

I know. The problem is that they really all belong there

Erik the Golfer

@noɥʇʎPʎzɐɹC I explicitly want a "block ad blocker targeting" filter, though.

Nathan Merrill

private Team team;
private final List<CharacterAbility> abilities;
private final List<CharacterAction> actions;
private int attributePoints;
private int[] stats = new int[Stat.values().length];
private int smartness, cleverness;
private double health, mana;
private int maxHealth, maxMana;
private int delay;
private int turnNumber;
private int stunTick;
private int poisonTurn, poisonAmount;
private int frozenTurn;
private int silenceTurn;
private int invisibleTurn;
private int turn;
private boolean dead;

noɥʇʎPʎzɐɹC

@EriktheGolfer Well then go into Adblock's settings, find the filter, and copy-paste the URL into uBlock Origin's filter list.

In fact, there's a checkbox for the other open source project "AntiAdblockKiller" builtin.

Erik the Golfer

@noɥʇʎPʎzɐɹC That one only works for some very specific websites.

Martin Ender

@ConorO'Brien for the yup quine, is --cheat allowed?

noɥʇʎPʎzɐɹC

3:40 PM

> uBlock₀ blocks ads through its support of the Adblock Plus filter syntax. uBlock₀ extends the syntax and is designed to work with custom rules and filters.

@EriktheGolfer Yes but uBlock Origin supports all ABP filters. And AdBlock, the adblocker you have now, only supports ABP filters.

Copy-paste the anti-adblock filter into uBlock Origin. It'll work.

Erik the Golfer

@noɥʇʎPʎzɐɹC I don't have uBlock Origin right now...

(I'll put it in though)

@noɥʇʎPʎzɐɹC Okay I have opened the Dashboard.

noɥʇʎPʎzɐɹC

be sure to disable Adblock, both running is slowest

@EriktheGolfer click settings > filters > scroll down > custom

Erik the Golfer

@noɥʇʎPʎzɐɹC I've ~~paused~~ disabled it.

The very evil ROFLcopter

wot

I am trying to download Coco/R for C/C++ but I need to authenticate me

noɥʇʎPʎzɐɹC

@EriktheGolfer so opinion?

Erik the Golfer

3:45 PM

@noɥʇʎPʎzɐɹC I have not initialized it yet, I'm checking its settings.

noɥʇʎPʎzɐɹC

@EriktheGolfer remember cog icon top left > 3rd party filters > custom > add that anti-anti-adblock filter

Erik the Golfer

@noɥʇʎPʎzɐɹC Enabled it just before you posted the message :)

Ahhh updating takes long.

noɥʇʎPʎzɐɹC

@EriktheGolfer

> explicit is better than implicit

Erik the Golfer

@noɥʇʎPʎzɐɹC What do you mean? Is there such an option? That ad blocker is GREAT!!!

noɥʇʎPʎzɐɹC

@EriktheGolfer no, it is a quote from the Zen of Python. uBlock origin might take long to update, buuuut

@EriktheGolfer ??

Erik the Golfer

3:52 PM

@noɥʇʎPʎzɐɹC Why two pings for that? I said that ad blocker is so good, that I might be replacing AdBlock with it!

noɥʇʎPʎzɐɹC

Oh. Hooray!

star to let others know?

github.com/gorhill/uBlock

@EriktheGolfer I did not expect so much enthusiasm. Why that much?

Downgoat

@EriktheGolfer did you write click the button to write a story underneath the PPCG dropdown

Erik the Golfer

@noɥʇʎPʎzɐɹC Just a question here? Have you fixed your pings there forever? The enthusiasm is because I have never seen such a massive (is it?) list of filters. Ever.

noɥʇʎPʎzɐɹC

@EriktheGolfer huh? what pings? Well uBlock is indeed a wide-spectrum blocker, so it blocks tracking, ads, badware (those annoying .cnet.com sites), and craploads of stuff. All the while, it's faster.

Erik the Golfer

@noɥʇʎPʎzɐɹC You have pinged thrice on my message.

noɥʇʎPʎzɐɹC

3:57 PM

ok sorry

quartata

@Geobits Any news on xkcd Marky? (asking too much I know :P)

Erik the Golfer

Put quartata on The Block.

noɥʇʎPʎzɐɹC

@EriktheGolfer you want me to pitch uBlock Origin to quartata?

Erik the Golfer

@noɥʇʎPʎzɐɹC No, quartata should be put in The Block, because that's where Marky resides...

noɥʇʎPʎzɐɹC

@EriktheGolfer Oh yessss (found in uBlock's own filter lists):

> forbes.com##script:inject(forbes-defuser.js)

PhiNotPi

4:12 PM

medium.com/code-golf/… my first blog post, on KOTHs. I'll probably add more details to "tips for winning" eventually. Read it and let me know what you think. There's probably some minor proofreading/editing to do.

6

Erik the Golfer

@noɥʇʎPʎzɐɹC The Block is a chat-room.

Here

noɥʇʎPʎzɐɹC

Executing time alone gets 0.31s, but time ls is 0.01

Erik the Golfer

@Downgoat I think you really need to make me an editor to post on the blog.

noɥʇʎPʎzɐɹC

wtf, npm? you were quitted a long time ago and are consuming 400 mb

Downgoat

@noɥʇʎPʎzɐɹC thats because it has no server endpoint and instead does a scrape and stores npm repo client-side

noɥʇʎPʎzɐɹC

4:16 PM

@Downgoat ??

ppcg.nomicon

github.com/CrazyPython/ppcg.nomicon

Game where people can change the game's rules ^

The very evil ROFLcopter

4:30 PM

»  ./thorc.exe
input: error: Parser Undefined!
╚ý▼:1:39855529 '↑▲▼'
Segmentation fault

Beautiful

El'endia Starman

4:41 PM

@PhiNotPi Great article. "advantages/ disadvantages" would look better if that slash was an "or". Anyway, I'm happy to see that Spacewar! made the list! :D

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@Downgoat I can't respond on medium looks like, but search meta abuot it.

iirc the knob was involved

wizzwizz4

Are there any negative prime numbers?

Jonathan Allan

no

no negative composites either

wizzwizz4

:-(

There goes my proof of the Goldbach conjecture!

Jonathan Allan

^^

PhiNotPi

4:47 PM

@El'endiaStarman thanks!

Jonathan Allan

@TheBitByte - what does the no use of ordinals actually mean on that bounty? Does that basically mean the only languages that can compete are ones with some built-in that yields something containing an asterisk? Or do you mean to imply chr(42) is not allowed but chr(6*7) or chr(ord(' ')+10) and the like are?

The very evil ROFLcopter

@JonathanAllan He is suspended

Jonathan Allan

Oh what?

what happened?

wizzwizz4

@JonathanAllan Annoying people, I think.

The very evil ROFLcopter

^

Jonathan Allan

4:52 PM

tsk

wizzwizz4

I missed it by ~10m, so I'm not sure.

feersum

And now annoying people un-happened?

wizzwizz4

I don't think we should discuss it without @TheBitByte being able to reply.

The very evil ROFLcopter

Oct 11 at 19:10, by Martin Ender

If your only contribution to this chatroom is arguing over pointless things for the sake of arguing, while also insulting other users in here, then please take your contribution elsewhere.

wizzwizz4

@TheveryevilROFLcopter I really don't think we should be discussing this.

Jonathan Allan

4:53 PM

fair enough

feersum

That's not very considerate to the people elsewhere.

Downgoat

@EᴀsᴛᴇʀʟʏIʀᴋ doorknob? Wat

@noɥʇʎPʎzɐɹC npm downloads entire repo which is probably why

noɥʇʎPʎzɐɹC

@Downgoat and then it keeps it in memory. Not swap either, but REAL MEMORY.

Downgoat

@noɥʇʎPʎzɐɹC well yeah during the download

npm doesn't choose memory or swap that's up to OS afaik

noɥʇʎPʎzɐɹC

@Downgoat this is long after the download

Downgoat

5:02 PM

That is not possible

unless you are using crap OS

PhiNotPi

@Downgoat sounds like a job for AvocadOS

The very evil ROFLcopter

I love debugging for hours a typo ._.

wizzwizz4

@TheveryevilROFLcopter Really? I don't.

Our opinions differ more than I thought...

The very evil ROFLcopter

lol

wizzwizz4

@TheveryevilROFLcopter Was that sarcasm?

The very evil ROFLcopter

5:07 PM

Obviously ._.

wizzwizz4

Could you please make the verb italic in future? It helps.

For example:

I really like deleting my backups instead of restoring from them.

Downgoat

@PhiNotPi ಠ_ಠ

speaking of which. Zyabin tried to revive it but no one knows asm fluent enough to make it a thing :(

The very evil ROFLcopter

?..to_i...?..to_i

^ valid Ruby

@Downgoat I speak some asm

Downgoat

@TheveryevilROFLcopter pls halp make bootloader

The very evil ROFLcopter

But for some reason I can't get qemu run on Windows

Downgoat

5:11 PM

that is limited to like 512 bytes so we need to do asm golfing

Conor O'Brien

It's not terribly surprising that any language has obscure code that can make it seem really rather odd at a first glance. To judge a language based off of an obfuscated code snippet is ludicrous.

</rant>

Downgoat

@TheveryevilROFLcopter the problem is you are using Windows

PhiNotPi

I might actually be interested in helping with AvocadOS some more.

The very evil ROFLcopter

@Downgoat The job of a bootloader is to switch to protected mode and load and run the kernel

Nothing more

Downgoat

I know that much

but I still can't memorize all registers and what are used for wat

The very evil ROFLcopter

5:13 PM

@Downgoat Huh

Conor O'Brien

@Downgoat I know some asm, but it's only Z80.

PhiNotPi

I'm really good at QFTASM. ~(°ワ°)~

wizzwizz4

@Downgoat I can do that! HCF\nXPR\nSDI

Done.

Downgoat

@TheveryevilROFLcopter also I have no idea how to make extern/global work

wizzwizz4

By the way, don't try that unless you're undead.

The very evil ROFLcopter

5:14 PM

@Downgoat You use GRUB

So you don't need a bootloader

Downgoat

wat

The very evil ROFLcopter

Only a kernel

Downgoat

avicados will have 0 dependencies

The very evil ROFLcopter

GRUB is the bootloader

Downgoat

we are trying to make most golfed OS

The very evil ROFLcopter

5:15 PM

@Downgoat Then you can't use GRUB

Downgoat

at least most golfed os with web gui

The very evil ROFLcopter

@Downgoat UGLY CODE IN APPROACH

Downgoat

WAT

The very evil ROFLcopter

And if you use GRUB anyway I can't help

#Windows

Downgoat

@TheveryevilROFLcopter wait wat is grub

wizzwizz4

5:16 PM

@Downgoat Don't have any bootloader code outside the assigned block of hd space.

The very evil ROFLcopter

@Downgoat Wot

You don't know what is GRUB

Downgoat

;_; y u no switch to Mac or Linux yet

The very evil ROFLcopter

@Downgoat ;_; becuz games

Downgoat

@TheveryevilROFLcopter no. I am not stupid gaot pls

wizzwizz4

@Downgoat The "Genius' Rubbish Undefined Behaviour".

The very evil ROFLcopter

5:16 PM

GNU GRUB

GNU GRUB (short for GNU GRand Unified Bootloader) is a boot loader package from the GNU Project. GRUB is the reference implementation of the Free Software Foundation's Multiboot Specification, which provides a user the choice to boot one of multiple operating systems installed on a computer or select a specific kernel configuration available on a particular operating system's partitions. GNU GRUB was developed from a package called the Grand Unified Bootloader (a play on Grand Unified Theory). It is predominantly used for Unix-like systems. The GNU operating system uses GNU GRUB as its boot loader...

quartata

@Downgoat GRand Unified Bootloader

Downgoat

@TheveryevilROFLcopter partion disk so u have 1 half Windows 1 half Linux

thats what I did

The very evil ROFLcopter

Woops fr wikipedia link

wizzwizz4

Not to be confused with the "Genius' Awesome Undefined Behaviour"!

Downgoat

GAUB?

wizzwizz4

5:19 PM

@Downgoat Yes. It uses UB to achieve great things.

Martin Ender

@Downgoat no GRUB, it's spelled R-some

The very evil ROFLcopter

@Downgoat I will try to rewrite AvocadOS' bootloader to be stand-alone

wizzwizz4

However, if compiled in the wrong compiler version it will wipe your hard disk.

The very evil ROFLcopter

(And then it would be possible for me to contribute :3)

Wait qemu works :D

Martin Ender

@wizzwizz4 Not to mention what would happen if you compiled it during the wrong moon phase.

wizzwizz4

5:22 PM

@MartinEnder If the stars are right, it will awaken Cthulhu.

noɥʇʎPʎzɐɹC

5:35 PM

> rev-vision.com/team

> he also folds a way for easy storage

Jonathan Allan

5:48 PM

hmm, that reminds me ...where's my t-shirt?!

^ wrong room :p

The very evil ROFLcopter

???

Jonathan Allan

something for the top users to look forward to after graduation

top two pages got t-shirts at puzzling.SE, I guess same will happen here

wizzwizz4

@JonathanAllan ... That's a thing?

Jonathan Allan

yeah although I am still waiting for delivery

wizzwizz4

Now I have a reason to ensure that Retrocomputing graduates! :-)

Jonathan Allan

5:51 PM

stickers too, cant forget the stickers

wizzwizz4

@JonathanAllan ...

No...

They... actually give out stickers?

They actually give out stickers.

...

Jonathan Allan

well I got contacted and gave my t-shirt size and a delivery add

wizzwizz4

Stickers?

...

Jonathan Allan

yup

wizzwizz4

Wow.

noɥʇʎPʎzɐɹC

5:53 PM

I WANT TSHIRTS AND STICKERS

wizzwizz4

How do they make stickers?

Jonathan Allan

32

Q: Puzzling Stack Exchange - Top User Swag!

We want to congratulate and thank everyone that helped this site and community grow healthily into what they are today! If you can find your name among the top 72 users in the first two pages here, we have a surprise for you! We want to send you a token of our appreciation for being among the mo...

discussion swag

Eᴀsᴛᴇʀʟʏ Iʀᴋ

6:07 PM

@Downgoat just search meta.

The very evil ROFLcopter

*(0xB8000) = 'A';

^ Why GCC don't want to compile?

flawr

Why do you do such stupid things? Perhaps your program does not have access to 0xB8000?

The very evil ROFLcopter

@flawr I am writing a kernel

All the memory is available mwahahaha

flawr

Aparently not

The very evil ROFLcopter

Fixed by casting 0xB8000 to a (char*)

wizzwizz4

6:18 PM

@TheveryevilROFLcopter Methinks problems are bad.

... How are you writing a kernel?

Are you using a VM?

If so, how?

The very evil ROFLcopter

Yes

qemu-system-i386

wizzwizz4

I've wanted to wite a kernel for ages!

The very evil ROFLcopter

I use this tutorial: a.michelizza.free.fr/pmwiki.php?n=TutoOS.TutoOS (It's in french)

wizzwizz4

@TheveryevilROFLcopter That's fine. I know a little French.

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Prove DeMorgan's laws Using the the ten inferences of the Natural Deduction System prove DeMorgan's laws. Specifics and scoring You will construct one proof for each of DeMorgan's two laws using only the 10 inferences of the Natural Deduction Calculus. The two rules are: ¬(P ∨ Q) ≡ ¬P ʌ ¬Q ...

The very evil ROFLcopter

6:24 PM

#define VGABASE ((char*)0xB8000)

void cls();
void putstr(char*);

void _start() {
    cls();
    putstr("Hello, World!");
    for(;;);
}

void cls() {
    int i = 0;
    while (i < 25*80*2) {
        VGABASE[i++] = 0;
        VGABASE[i++] = 7; // White on black
    }
}

void putstr(char *s) {
    int i = 0;
    while (s[i]) {
        VGABASE[i*2] = s[i++];
    }
}

^ Code of my kernel

wizzwizz4

That's a very boring kernel at the moment, although some of the functions are good.

flawr

And what is a kernel?

In this context?

wizzwizz4

@flawr A thing that does things.

The very evil ROFLcopter

A kernel is the core of an OS

wizzwizz4

@TheveryevilROFLcopter Implement an esolang as your kernel.

Make it so the only code that can run is that esolang.

The very evil ROFLcopter

6:27 PM

The executable format of the kernel will have a bit in the header to indicate the code is a BF code, not x86 machine code

wizzwizz4

@TheveryevilROFLcopter Perhaps you should implement an esolang that's a little less... Turing-tarpit-like.

The very evil ROFLcopter

Brain-flak? :P

Srs, BF is the only esolang I know how to implement in C

Adnan

Can you also implement BF in Assembly?

wizzwizz4

@TheveryevilROFLcopter I'll help if you like.

The very evil ROFLcopter

@Adnan No

wizzwizz4

6:33 PM

Ouch. I just looked at the mod flag panel.

I shouldn't have.

People flag the most horrible messages! Why do they want to bring those to my attention?

I don't want them brought to my attention! I don't want to look at them!

But other people don't either, so I delete them.

Jonathan Allan

6:46 PM

@Fatalize If one lives in a big city, the stores are much better in the dead of night; less people there to get in your way.

El'endia Starman

@JonathanAllan Oooh yes, this. It's wonderful to drive to a grocery store and shop around midnight since there's hardly anyone to worry about. Much quicker and you don't have to be ready for social interaction (including responding to other cars).

Jonathan Allan

exactly

Martin Ender

@JonathanAllan well, provided you're in a country where that's possible...

Jonathan Allan

I tend to leave it a little later to avoid the drunks though

PhiNotPi

@El'endiaStarman I've made progress on the symbol table I was talking about earlier.

Jonathan Allan

6:53 PM

yes it needs to be open :p that was a given

PhiNotPi

@TheveryevilROFLcopter are you starting from scratch?

The very evil ROFLcopter

?

Oh, yes, I wrote the bootloader/kernel entirely

PhiNotPi

how much of it is based off AvocadOS?

The very evil ROFLcopter

AvocadOS don't want to build on my computer ;_;

lolwut

Kaz Wolfe

so quick question...

say i have this.

New Main Posts

6:58 PM

0

Q: Export The $PATH Variable, Line-By-Line

Inspired by this question on AskUbuntu. Your job is extremely simple. Take the PATH environment variable (echo $PATH) and export it such that each entry (separated by the : character) is on its own line. For example, if the PATH is /bin:/usr/bin:/usr/local/bin, your program should output: /bin...

code-golf string

Kaz Wolfe

kaz@host $ somescript.sh
a
b
c
kaz@host $

would that be considered a trailing newline on this site or no?

The very evil ROFLcopter

There is a trailing newline

Kaz Wolfe

alright, thanks.

The very evil ROFLcopter

Without trailing newline this would look like this:

kaz@host $ somescript.sh
a
b
ckaz@host $

PhiNotPi

@TheveryevilROFLcopter my guess is something is being stored where color is supposed to go.

Kaz Wolfe

7:00 PM

@TheveryevilROFLcopter okay, thought so, thanks for confirming.

The very evil ROFLcopter

Now I borked it more lol

Wait I found the problem

Precedence ._________.

PhiNotPi

> VGABASE[i*2] = s[i++]

is that it?

The very evil ROFLcopter

VGABASE[y - n*COLS*2 + x] = VGABASE[y*COLS*2 + x];

The good code is

VGABASE[(y - n)*COLS*2 + x] = VGABASE[y*COLS*2 + x];

PhiNotPi

10/10

The very evil ROFLcopter

Wtf interruptions are weird

Downgoat

7:23 PM

@TheveryevilROFLcopter wait, is is not already?

The very evil ROFLcopter

@Downgoat It use GRUB

And for some reason I can't get AvocadOS to build on my computer :/

So I create my own OS

And I am trying to understand how to interrupt

The very evil ROFLcopter

7:37 PM

inc/io.h:5:5: error: 'asm' undeclared (first use in this function)
     asm volatile ("outb %%al, %%dx" :: "d"(port), "a"(byte))

???

How asm is undeclared

New Main Posts

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Q: The 3x3 Hexa Prime Square Puzzle

The 3x3 Hexa Prime Square Puzzle Introduction We consider 3x3 squares of hexadecimal digits (from 0 to F) such as: 2 E 3 1 F 3 8 1 5 7 2 7 D D 5 B B 9 We define a 3x3 Hexa Prime Square (HPS3) as such a square for which all hexadecimal numbers read from left to right and from top to ...

code-golf primes hexadecimal

The very evil ROFLcopter

Huh the correct thing is __asm__

._. now the machine restarts in an infinite loop and idk why

Martin Ender

@xnor Woohoo, a challenge for Retina to shine :D

Conor O'Brien

@TheveryevilROFLcopter these are the joys of debugging, which is usually a more private matter.

The very evil ROFLcopter

:O I found why

Because the bootloader only loaded the first section of the kernel

Not the entire kernel

Conor O'Brien

7:50 PM

@MartinEnder That's a good question... I'll say "yes" it is allowed. I'll also revise appropriately.

The very evil ROFLcopter

Waitwat

Now the kernel is not executed

xnor

@MartinEnder can you match (ss)* directly?

Martin Ender

^((.+)\2)*$

New Sandboxed Posts

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A: Sandbox for Proposed Challenges

Chebychev Rotation code-golfgridgeometry Consider a regular grid, where each cell has integer coordinates. We can group the cells into (square-shaped) "rings" where the cells in each ring have the same Chebychev distance (or chessboard distance) from the origin. Your task is to take such a cell...

2

A: Sandbox for Proposed Challenges

Pairable strings code-golf A string is pairable if it can be split into subtrings, each of which is a string repeated twice. For example, aabaaababbbaba is pairable as: aaba aaba b b ba ba Given a non-empty string of a's and b's, output a fixed Truthy value if it's pairable and a fixed Falsey...

ppcg.nomicon

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