It’s finally time for me to wrap up this ZX Spectrum series, with a look at how to get the simple 1-bit beeper on every Spectrum model to emit high-quality digital audio. The results are quit…

My article from two weeks ago on fancy 1-bit sound on the ZX Spectrum was a bit incomplete. I used a shortcut to test out the “interleaved oscillator” technique, and I couldn’t ge…

YouTube video by The OLD Cartridge

Hackaday Article

I went to VCFW again this year. Unlike last year there wasn’t a major overarching theme this time, but that meant more miscellaneous and serendipitous things to go alongside it.

About a year and a half ago, I took a more systematic look at programming the Amiga 500 hardware directly. I had a somewhat impish thought at the time and thought to half-seriously suggest that its…

Last week’s article saw us preparing sprite graphics for display on the ZX Spectrum’s display screen. This week we’ll actually do the rendering, and kick off the shooting gallery …

It’s finally time to properly harness the power of the ZX Spectrum’s graphics hardware. We’ve looked at what BASIC offers us, we’ve seen how the system ROM simulates a text …

Working on these Spectrum projects has meant more practice with Z80 assembly along with everything else, and while I do think I’m basically at parity between Z80 and 6502 now in terms of my s…

YouTube video by Poking Technology

Now then, where were we? Last time, we worked through the many and varied abilities the ZX Spectrum system ROM offers us when we treat the screen as being a text-based terminal. However, as we note…

Last month (just a couple days before my Exidy Sorcerer article) the ZX Spectrum celebrated its 44th birthday. I have written shockingly little about the system given that it still remains the firs…

The articles from these past couple of weeks kinda burned me out. After wrapping it up, I decided I was going to take it easy, do something simple and brainless in a nice comfy high-level language,…