HOME About NCOT Documentation SineSoft Social Media Support Me

Drink tea and make things

Blog ZX Spectrum Next Computer Science Electronics Z80 Homebrew Computer Arduino and Microcontrollers
Clever engineering on a budget - ZX Spectrum Interrupts

Clever engineering on a budget - ZX Spectrum Interrupts

Posted:

How do you make an underpowered 8 bit CPU seem a bit more capable than it really is? Interrupts! that mechanism where the CPU can be poked and told to do something completely different, then resume whatever it was originally doing as if it’d never stopped.

Read More…
Breaking the 64k barrier - Spectrum Memory Banking

Breaking the 64k barrier - Spectrum Memory Banking

Posted:

So as explained in the previous video, our little Z80 CPU only has 16 bit address lines, and that means the maximum memory it can address is 64K.

Read More…
Memory Banking, DMA and Interrupts - How 8bit computers work

Memory Banking, DMA and Interrupts - How 8bit computers work

Posted:

Computers from the 1980s seemed to be quite limited in their abilities, there was a big drive to make a machine as cheaply as possible. Competition was fierce between manufacturers.

Read More…
Easy C Programming on ZX Spectrum Next - How to set up

Easy C Programming on ZX Spectrum Next - How to set up

Posted:

How to set up Z88DK to develop C programs for the ZX Spectrum Next in about 20 minutes. This video aims to show how straight forward setting up a modern, easy to use development environment for the ZX Spectrum Next can be.

Read More…
Copper

Copper

Posted:

Let’s look at how to make an 8bit computer produce graphics normally seen on an Amiga. The Spectrum Next contains extra hardware that lets us very accurately control when things happen relative to the screen being drawn.

Read More…
25 Year Old Coding Project Review

25 Year Old Coding Project Review

Posted:

25 years ago I was in college doing my A-Levels. Now I’m a teacher teaching A-Levels. I recently found my old programming project from my A-Level computer science course.

Read More…
Atari St Mouse - How's it work anyway?

Atari St Mouse - How's it work anyway?

Posted:

Meet the world’s worse mouse design ever. The Atari ST mouse. Amiga owners liked their tank mice, we ST owners didn’t like ours. It was square, uncomfortable and prone to breaking quite easily.

Read More…
Logo and Mindstorms - Learning How to Program

Logo and Mindstorms - Learning How to Program

Posted:

Are you a programmer? Are you learning how to be one? Come to think of it, how do you even learn how to think like a programmer?

Read More…
Upgrading My Atari ST to 4MB

Upgrading My Atari ST to 4MB

Posted:

One of the first upgrades I ever got for my ST was a RAM upgrade to take it from the stock 512KB to 1MB. The one I got was the Marpet XTra RAM Deluxe board as I quite liked the idea of being able to add more RAM in the future.

Read More…
Tired Psu Repair My Atari 520STFM

Tired Psu Repair My Atari 520STFM

Posted:

This isn’t an instructional video, if you try this yourself be careful and don’t touch anything while the PSU is plugged in. It’s connected to the mains, and we all know touching live wiring is bad.

Read More…
[ « Prev ] 1 [ 2 ] [ Next » ]