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ZX Prism – Solid Progress (by SJB)

Development of a FPGA based Spectrum Compatible computer. The ZX Prism should remain compatible with the ZX Spectrum whilst expanding its graphics and memory. “So much progress since the last update! First up, I finally found why esxDOS wasn’t working properly on Prism. Turns out that the divMMC automapper was working perfectly. The problem was […]

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Writing a ZX Spectrum Emulator – Part 1: The Beeper

Writing a ZX Spectrum Emulator Part 1: The Beeper By Adrian Brown   On the ZXAsm chat channel recently there was a lot of discussion about writing spectrum emulators. Having written a very basic one many (around 20) years ago, I thought it was about time to try and do one properly. While there seems […]

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Z80 Assembly Programming Challenge #7

Compo #7 While we are sorting out the next compo to create a game, we thought we would have a quicker size optimising compo. Ive attached an example, smallest entry wins.. 🙂 Final size is the size of the code plus any initialised variables, you cannot assume RAM will be 0 though. DETAILS: You must […]

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Assembling for ZX Spectrum 128K (how I do it)…

Hey all ! I had an idea….. that I should document the way I edit/assemble/run my ZX Spectrum assembly code. This isn’t going to be a coding tutorial, there are much better coders who can do that ;),  It’s just to show you the software and utilities I use to code. So, let’s get started…

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The Blues Brothers: ZX Spectrum 128K WIP

Update Here is a quick demo of where I am at with my creation of The Blues Brothers for the 128K ZX Spectrum. Works Compression/Decompression Tile Routine Paging memory Viewport display PT3 AY music player Interrupts are working correctly Flipping the screen pages Title screen is done Loading of data into the correct memory pages […]

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Digger !!!

Hey all !!! I was chatting with a very nice lady that I work with today (well, Emma is based in Australia), about old computer games.  Emma mentioned a game for the PC that she used to play back in the 80s called Digger. Now.. I remembered the name and had a vague idea that […]

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