The Curious Engineer

All blogs / Electronics

Baltazar Studios

baltazarstudios.com

This page contains blogs.

ElectronicsFPGA / HDLCPU / microarchitectureZX Spectrum / Sinclair

’05’10’15’20’25
Posts
56 from 20 May 2001 to 11 Apr 2026
Posting
monthly (10 in the last year)
Kind
personal blog
Feed
https://baltazarstudios.com/feed/

2026 10

  1. A Calculator (10): It Works!
  2. A Calculator (9): Chasing the Last Digit
  3. A Calculator (8): From Dev Board to a Real Device
  4. A Calculator (7): Writing Microcode for a CPU You Just Invented
  5. A Calculator (6): Designing the CPU
  6. A Calculator (5): The Hardware
  7. A Calculator (4): The Framework
  8. A Calculator (3): Practical Numerical Methods
  9. A Calculator (2): Pathfinding
  10. A Calculator (1): Introduction

2025 2

  1. Porting SpeedCrunch to WebAssembly
  2. Z80 Explorer v1.06 released

2020 1

  1. Z80 Explorer

2017 1

  1. Development PC Setup

2016 1

  1. ZX Spectrum ROM mods

2015 1

  1. The A-Z80 CPU

2014 12

  1. ZX Spectrum on FPGA using A-Z80 CPU
  2. Z80 Library
  3. A Z80 : References
  4. A Z80 : The Soul
  5. A Z80 : The Mind
  6. A Z80 : The Heart
  7. A Z80 From the Ground Up
  8. The Anatomy of a Z80 Gate
  9. Z80 Instruction Register deciphered
  10. ZiLOG Z80 (un)documented behavior
  11. Arduino and ZiLOG Z80
  12. A Poem by FPGA

2013 25

  1. PCB Making: 1. Introduction
  2. PCB Making: 2. Get Started
  3. PCB Making: 3. Schematics
  4. PCB Making: 4. Layout
  5. PCB Making: 5. The Mask
  6. PCB Making: 6. Cut a Board
  7. PCB Making: 7. Expose and Develop
  8. PCB Making: 8. Etching
  9. PCB Making: 9. Tinning
  10. PCB Making: 10. Drilling holes
  11. PCB Making: 11. Solder parts
  12. PCB Making: 12. Protection and Sealing
  13. PCB Making: 13. Enclosure
  14. PCB Making: 14. Testing and Troubleshooting
  15. PCB Making: 15. Software
  16. PCB Making: 16. Conclusion
  17. Sinclair ZX81 lives on!
  18. RS232 and Arduino
  19. RS232 Interface
  20. Parallel Port Logic Analyzer
  21. Software Scope using a Sound Card
  22. Accuracy of Arduino’s ADC
  23. Printing from Eagle
  24. Etching the PCB: Copper etchant calculator
  25. Ambient Weather WS-2080 hang fix

2010 1

  1. Fixing convergence on TV

2009 1

  1. Building a Custom Picture Frame

2001 1

  1. VMSim – An Attempt at Virtualization