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1:00 You should play screaming sounds whilst unwrapping that shaft.

It's funny I'm working on a debugger FOR AVR chips (as found in the Arduino)

wow!! what the!!

Какой-то чудак, полез разбираться и не осилил, видеорежим не тот выбрал. Там же видно, что на оригинале буквы широкие. Я думал это история успеха а тут не очень пока. Ещё игры делать с таким опытом, это курам на смех.

I converted online some animated gives into single pictures with 112x112 pixel to download in a zip file and then i converted the pictures into character files for an animation on the text screen. The animation use a block of 14*7=98 extended ASCII character with 8*16 size. I put all instructions to convert and to start the animation into batch files using batch files as open source container for x86 assembly to create new executable from the routine inside with a little help from debug. These batch files have to start with parameter attached to build and to modify the routine. Now i thing aboit to build a new C routine to create a batch with a lot of call commands to start with a lot of filenames attached. Some animated gives have 200 pictures for example, but the charater files have only 1,5 kb.

Would be cool to see you compiling a program that does perturbation based infinite zoom mandelbrot ❤

In high school I did a lot of Pascal graphics and it was nearly all assembly that did the cool stuff like custom fonts, really cool graphics that I would expect games to have. Didn’t bother with the turtle graphics but I for the life can’t find the files. The website I found was based in Netherlands but he had some cool demos too. Kinda reminds me what you did and of course failing to use int 21h as a prank was fun ;-)

So this is how it was done! I was a teenager back at the time of this CPU, and without accessible and affordable internet in my country (Brazil) I had to do a lot of techno-sorcery to learn anything that wasn't covered by my teachers at IT technician school, including how to create graphics in DOS, interrupts (I loved messing around with them), and stuff. Trying to figure out how that damn screen worked gave me a lot of grief. Thank you for solving this mistery for me after all those years!

As a kid, I was on a special education school and in the 5. grade there was an education game called "Budenberg" at school. It was in the 90s. At that time, I was already pretty familiar with QBasic (I've teached it myself) and that game was extremely interesting to me because I noticed quickly how it was made: That game was pretty complex (it included many different kind for reading-, writing-, math- and other game modes) but hacked together. It uses almost all possible and impossible screen modes and some modes used tricks like the one in the video. And everything was squeezed into one single 720k 3,5" disk! The game modes utilizing the tricks look like graphic screen modes at first glance. But the software was unstable and crashed frequently. When it did, it often revealed the secret fact that the "graphic mode" was in fact text-mode! It took long time to me to figure out how they included things like circular pie charts etc. into text modes. The audio part is still a mystery to me: The game was made with rotten school-286's in mind with no sound blaster. It used the internal speaker to read aloud words, letters and phrases. The audio output through the internal was pretty clear and human-like. I know there is some crude PCM/PWM hack but this usually produces robotic sound. And how did they get the sound files into the disk? I can confirm everything was really on that one disk with no hidden chamber because a few grades later, I was that one stundent who fixed all kind of computer-related issues because every teacher was afraid of computers, especially those running MS-DOS without mouse. What I did most of time: Getting this game out of some weird bricked state by reinstalling it from the disk xD. That old dinosaur still seems to be on sale.

The boot manager VCOM System Commander also did this character replacement trick to show icons for DOS, Windows, Linux, etc. in the boot selection screen. Made the computer feel so much more modern...

¿8th language is similar to Forth?

Thats screen mode 12, supports text and drawing

Gigabyte p55-ud4 lga 1156 dispays exact same bootscreen as shown in video.

4:52 All I can say is, I hope this website never goes away, it's like the Library of Alexandria for this stuff

It is possible that the Energy Star logo is displayed during boot exactly as you said, but it seems to me that it could also be displayed as a graphic (by the way, this has already been written about in the comments here), because many BIOSes had a function for displaying a splash screen and even replacing it with a user-defined version. As far as I remember, when displaying graphics using the BIOS 10h software interrupt, text can also be displayed, and the BIOS int 10h interrupt is available much earlier than other BIOS interrupts when booting the computer.

Reminds me a bit of the programmable symbol sets for the IBM 3279 colour terminal. Think green graphics lightning.

Interesting way of naming the index of each nested “for” loop 😬 Irrelevant, I know, but it just caught my attention, as I’ve always dreamed about “i, j, k” and not “k, j, i” 🫢

Random c header stuff 😂

1:35 I don't know about anyone else, but to me there's just something beautiful about seeing the raw silicon of an IC, especially a CPU. And I mean that in the same way that I can see beauty in some pieces of art, purely aesthetically. 8:44 "does stuff, and give outputs in a predictable and noble way" "Noble way" That makes me smile.

I was expecting you to code in true 16-bit mode to recreate the original 16-bit execution.

Sounds like you need to set a new color profile... that's not the official name, I'll have to check. Yeah, you''l want to re-calibrate it, and most people don't need the hardware these days to do that, I have two graphics cards, and I just let Intel (the smaller integrated card) handle those big changes, because that guy from NVidia wears a tiny little lether coat, we can't trust that dude with issues of scaling. You would think you only have three choices coming up, R G B, but that rabbit whole goes on for miles. Just look up a profile forit, and from what I hear, the manufacterer not only doesn't always ship it with something to calibrate properly with, it's the norm. But that's just what I have heard, I don't know. It made a yuge difference for me, but that doesn't translate right with multiple displays. But I'm gettting ahead of myself. :-D Hope this helps.

I'm a newbie programmer, and I despise significant whitespace.

Omg I love your channel, dude!

It's a relief that I always knew how it was done... and I was right. :D Thank you for showing, how it's done practically!

Remember Gopher?

Nice keyboard -- got a link?

I love this series! I have setup the environment as you explained (but on a real machine) and i hope to learn some bite-sized stuff from you :) Demo effects would be great, but probably far from simple. I will keep an eye on your new videos for sure. Thank you so much for explaining everything so ..well!

Liked and subscribed!!

Love this kind of thing, especially when explained through what's going on. Nice one, thanks! :)

Very interesting, I'd never considered how they made that logo. Back in the day it was quite impressive. As for the forum question, if it was a choice between a forum and discord I'd choose the forum every single time. It's not the discord is bad but the sorts of discussions likely to take place will be drawn out over days and might want to be archived.

17:33 lol

I don’t understand. You basically modified the ASCII symbols in order to draw the Energy Star logo?

You have done a nice road!

You need to call another video mode, that has char remapping only for 8x14 instead of 9x16. There's a DOS tool that lets you visually remap the char set in realtime, that generates an exe file. When run, it applies all the char changes. A neat trick. I think it's called FONTEDIT. I think you can see the modified EGA (or whatevs) char set if you change the video mode before launching FONTEDIT and see what chars were modified by BIOS.EPA. I didn't try, tho.

Your videos are fantastic. I love this sort of thing: trying to replicate something reasonably small with a deep-dive investigation (and using a nice, straightforward language :) ). You make everything clear and understandable without labouring the point.

Don’t forget to close your logo file after you’re done reading it.

plasmatic intro by zden th-cam.com/video/pJ65514-huY/w-d-xo.htmlsi=HpafDVdd3nUIWmgY

Well, I can reasonably assume you're from the UK. I gotta wonder. Did people in the UK even give a shit about the whole "EnergyStar" BS?! I mean, even to this day I still see that symbol. You got to any appliance section of a hardware store in the USA you're gonna see in plastered all over washing machines, dryers, dishwashers, refrigerators, stoves... it seems to be a strictly US thing. Thing is, your appliances run strictly off 240v, whereas ours are 120v for the small ones and 240v for the large ones. I doubt you see EnergyStar plastered all over the damn place like we do, but what's your opinion of seeing this ridiculous and distincly American crap on your old PCs in the UK?

I was amazingly amazed when I saw the Energy Star graphical logo on top of a text mode screen. Not just the first time, but for quite some time. I couldn't understand how they did it, and I don't think I ever say such usage anywhere else. Great times 😄

Try bit shift to the left. It may only use 7 bit for defining a glyph.

VGA has hard wired gaps between the characters. Some characters override this and the last column of the character is doubled. This is why you can draw uninterrupted lines and boxes. Which characters do this is also hard wired in the VGA circuits. This enhances the resolution without requiring more character ROM space. CGA/EGA doesn't has this feature so you need the gap in the Char-ROM itself. That's why CGA text is more "blocky". On the other hand, you can use custom characters to display graphics just like your average 8-bit micro.

Thanks a lot.

Demo scene best scene! Great to see an everyday artifact of my earlier life dissected and explained so well. Thanks for digging into this and sharing!

"I told my mortgage lender I'd still be working at that age" ha ha you & me both mate

Go ahead with the forum! 👍

This is really nice! I'd like to see an update/follow-up on this, even if it's just a two-minute video.

One step beyond would be to get the memory, BIOS name, etc by querying the system rather than hard coding. Nice stuff though. I fear demo coding on old stuff will require insane coding and maths skills though!

it reminds me about how the windows 10 loading animation is actually a font and it just switch characters, which is verry elegant and optimal

Re your closing comments: You might look at FRACTINT. After drawing a fractal in a 256-color mode, it would rotate the colors in the palette. It could also load different palettes at the touch of a button.

0:38 Didn't the 486 DX run at 33 MHz and the DX2 ran at 66 MHz? 32 MHz doesn't sound familiar. Wondering if you might have been thinking of 32 as in 32 bits? 5:20 (Edit) Looks like the code was later updated since it shows '80486DX/2 CPU at 66MHz' here.