High quality welding lmao. You should buy these from a proper vendor to get access to the datasheets, schematics, etc. Makes it more approachable for beginners.

Is this possible to write in BBC BASIC SDL?

Massive respect for the detail in these tutorials. I am commencing my journey in ZX Spectrum Z80 Assembly and your videos are amazing. Your voice is easy to listen to too. Thank you 🙂

Hesitating... mmmmh... Will not light the pyre eventually. Good job 😊

Just add a loop and instead of time it once, time a million runs.

I cut my programming teeth on ZX-80/81/Spectrum including Z-80 assembler and hand-coded machine code. Seeing BBC BASIC with Z-80 ASM is a joy.

I recommend that you look seriously at Heath Disk Operating System HDOS which is available in the public domain now.

In this case. I asked for it :) So a customary, thankyou is given. :)

The original Apple II did not sell 6 million. That figure includes all the later versions up to the 1990s. IIRC the original Apple II sold 40000.

Back in the day, I dreamt of creating a program (game) such a Manic Miner, or Jet Set Willy... just like my hero Matthew Smith. It all seemed far too complicated though - indeed, almost magical - and I had no idea where to start. Now that I'm in my 50s, I'd really like to give it a proper go. Would this be a good series to get me off and running, or at least walking? Does anyone have any other recommendations? Bear in mind, when it comes to any kind of coding at all, I am a *complete* beginner! Cheers!

Your camera handling sucks, dude. Really good, and the ESP32 is a powerful CPU, but unfortunately not GPU

Doing Fractals in assembly is cheating. They have to be horribly slow in BASIC. Did one on my CPC lately, with Copilot teaching me how, it was an awesome experience. And 1 hour wait for the full res Mandelbrot was not too bad.

It would be cool if there was a sort of in between of these chips. I'd probably call it a 6Z802

"self-modifying code" that sounds like a recipe for debugging hell

This playlist comes to the rescue. It's like seeing an old book of photographs of a dearest friend in a moment like this. Farewell, Z80.

Hi. Is there a video about how to create and execute assembler code on a real Spectrum?

So, those "later episodes" you've been referring to....where can I watch them?

Just paused the ad to say f 6502 already I always thought if I learned an old cpu assembly language and architecture it would be 6502 but it turned out to be the z80. I’m only half kidding, like what you want ❤️💙💜💗🖤💛💚❣️

X16 sucks.

In the video, ROM_BANK is set to address $9560. In the .asm file, it is set to $01. Is this a mistake?

The Latin and Classical Studies teacher at our school was a computer hobbyist. He gave me his copy of Picturesque Editor/Assembler/Monitor/Debugger and said "See if you can work out how to use it, I have no idea". It took me another year or so but I eventually worked it out with a little help from a friend :D I wrote a couple of little games for the Spectrum in Z80 but never fully finished for release. I've still got the tapes but don't think they'll work after all these years. I'd have to guess at the org address to run it and the source was created using Laser Genius Assembler Suite.

I would not time text mode either, even on an 8080.

Zylog is living proof how big money screws humanity. Intel used talent to make a processor which sucked. The talent knew it, and left because Intels focus was purely on money. Enter Zylog, and all big money did again was try to use them for personal gain, meanwhile, a processor 25 years ahead of its time was on the table. The Z80 was reverse engineered by these people who claim themselves "elites" do this over and over, screwing the people who have done and contributed the most. If Zylog was given a proper shot, humanity would have more advanced processors, because the people who loved doing that, and who were the best at it, ended up being shunned because they weren't making someone else rich.

You can also program the BBC using graphics hold that way each column can be a distinct colour, and you get 38x24 blocks in total. So character 1 is CHR$158, then CHR$146 for example for green, and then chr$127, followed by just colour changes in the range 144-151

We Brits say zed because some times we hear 65Z02 or CX81

I think the separate i/o addressing just about wins it for me as we dont have to have specific memory mapping decoding logic.

Did try assembler when I was 15 years old, and build some pretty cool stuff, ie. a program that doubled the number of characters on the screen with smaller font, which I then used with a spreadsheet program I built in basic... Insane ... I would not be able to do this today.

Vector art makes more sense in 8-bit, because bitmaps are basically bit-banged photos. Vector art can morph and really use the calculating power of the system to create a living art. To have an eZ80 to play with that can do things with vector graphics sounds exciting to me!

The Atari 2600 hardware was based on the MOS Technology 6507 chip, offering a maximum resolution of 160 x 192 pixels (NTSC), 128 colors, 128 bytes of RAM with 4 KB on cartridges

Thanks again for this series! Third time watching this particular video, and stuff's starting to "click" now. Wonder though, does the Palette Offset nybble get ignored when using 8bpp mode?

I'm trying to grasp the differences between programming the X16 and the C64. On the 64, I can lift the ROMS and directly plot the NMI & IRQ vectors. Handy if I'm using all the RAM or don't want or need the regular IRQ tasks slowing things down, even briefly. I imagine many games do this. When an interrupt strikes on the X16, what happens exactly? With all the ROM banks possible via different programs, how does this work? What if it's running a ROM program in bank 4? Does the machine automatically swap back to bank 0 when an IRQ hits, just to find that hardcoded vector in the Kernal? Does it stash the ROM bank to the stack as well? Is it possible to "lift" the X16 ROMs (like on the C64) and use all 64K of "lower RAM"? Or am I stuck having my IRQ's and NMI's forever tied to those indirect JMP vectors in the $0300's? I've only had my X16 a few weeks now (no interest in the emulator, waited for the hardware) so now I'm poking around your videos to get a better feel of what this machine can do. So many questions, so little documentation that goes into detail - for now. Thank you though, for all the effort put into this series!

Thank you for the history information on Z80 ptocessor. I learned my initial assembler language on the Z80 processor and utilized a z80 computer to master my first programming language, Pascal. The computer's operating system was UGC Passcal, and the entire operating system, along with our Pascal programming codes, was stored on a 400kB floppy disk. I am proud to have utilized the z80 8-bit processor to learn computer programming.

This video, although well constructed has one major shortcoming. This video does not demonstrate the real result of the 16-bit TMS9900 processor, but it proves just the one that the TI-99/4A can have. The TI-99/4A processor though it is a 16-bit processor only a small portion of the system was 16-bit (system ROM and 256 bytes of scratchpad RAM), and used a second 8-bit computer bus for the rest. You basically in this video have obtained a result among a real 16-bit computer compared to an 8-bit computer.

Now you can Horace & The Spiders on an widescreen tv!!

Might I remind you that the TI-83+ series is itself known for being rather gameboy-like in terms of gaming potential

There's more ISA innovation in either of these processors than you'd get in 10 years of CPUs now. Chuck Peddle and Federico Faggin were both absolute geniuses.

I had one of theese as a kid. Whats its name pls 😩

X16 Commander for the win.

Hi, i don't understand how do you get 104 (signed A) on the line add a,b. -24+-128=-132. Where does the +ve 104 comes from? Thanks.

So, the routine basically processes the sprite into the buffer and checks key presses, then when the handler is triggered at the VB it writes the data to the screen? I'm very new to this and am just using a halt at the top of my main loop in IM1, but I still get visible tearing and flicker, so this may be a great solution.

I'm half way through now - really good material and explanation. Never learned Z80 Assembler as a kid, 68000 though in university. So it's fun to learn again. Super thanks!

What is meant by the term "page"? Ie "the last 64 pages". What exactly is a page, how large is a page? etc. etc. (forgive me, learning)

On top of that there is also a MS-DOS emulation and Z80 CP/M emulation, and Atari 400. A FANTASTIC BOARD, largely due to the incredible work of Fabrizio Di Vittorio and BitLuni. Too sad that those 2 did not earn enough money for their absolutely herculean efforts. They were kind of ripped off by China.

Wybitnie tendencyjny. Nic rewelacyjnego. Porównanie rejestrów indeksowych do adresowania bezpośerdniego?. Niech autor poda które z procesorów poszły w stronę Z80, a które w stronę 6502. Ostatnim był chyba 6509 w Commodore.

Thank you for making Linux a huge part of your video❤😎

Can you attach a physical floppy disk drive to it ?

Legal!!!😃😃😃

I am loving these, however I wish I could find a course. that also has you code and learn by doing...I understand the concepts but am having a hard time grasping it when I try to make even the most basic of programs. I just don't know what I am doing :( (course for the X16 and 65c02) .. IE, lesson 1, This is how you make "hello world" and this is what it is doing...Lesson 2. keep building on previous lessons.

The other processor from around the same time was the Motorola 6800, and then 6809. The 6809 did not have the issues of the 8080.

Stumbled on this video. Reminds me of the seventies when I started designing embedded systems. Reason I used Z80 instead of 8080 was that it needed only one voltage supply. 8080 had three. Wire wrapped a system with 4k SRAM and 2k EPROM. For half of the EPROM I wrote a rudimentary assembler translating mnemonics to machine code. Used to learn students how to control a couple of pneumatic cylinders.