ZX Spectrum, Rom Cartridge Research @weirdboyjim
ZX Spectrum, Rom Cartridge Research  @weirdboyjim
Uploaded January 2023 | Updated September 2026, 1 week ago
I continue to reminisce about my first computer by start to explore the expansion facilities. In this video I look at the subset of expansion port lines exposed through the rom cartridge port added by the interface 2. I build a breakout board and use it to interface a game rom image into the spectrum .

0:00 Introduction
0:38 Discussion
2:15 PCB Design
7:53 Unbox and solder
10:08 Testing
16:16 Troubleshooting
17:30 Success!
19:03 Future Plans
21:09 Outro
22:00 Post credits scene
ZX Spectrum, Rom Cartridge ResearchShift Unit PCB - Making an 8 Bit pipelined CPU - Part 89Integrating The UART - Making an 8 Bit pipelined CPU - Part 80ALU Control PCB - Making an 8 Bit pipelined CPU - Part 92Sprites (part 1) - VGA from Scratch - Part 22Mailbag #5 Transfer PartsStorage (SD Card Support) - IO from Scratch - Part 8Memory Bridge Solder and Install - Making an 8 Bit pipelined CPU - Part 71New Clock Install - Making an 8 Bit pipelined CPU - Part 84Tilemap PCB (Fix!) - VGA from Scratch - Part 9.5Palette PCB - VGA from Scratch - Part 19Interfacing - UART from Scratch - Part 3
James Sharman |

ZX Spectrum, Rom Cartridge Research

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