Stories with Tag DIY computer

• Msxbook OneChipMSX MSX2 Computer

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  Posted: 2025-02-15 00:08:14

  Verbose tl;dr

  The MSXbook OneChipMSX is a compact, portable MSX2 computer contained within a book-like form factor. It features a Raspberry Pi RP2040 microcontroller emulating a Z80 processor, offering a faithful MSX2 experience. The system includes a membrane keyboard, a small LCD screen, integrated SD card storage for ROMs and data, and various ports for connecting peripherals like joysticks and external displays. Intended for retro gaming and MSX development, the OneChipMSX aims to provide a convenient and affordable way to enjoy the classic MSX platform.

  The Tindie product listing introduces the Msxbook OneChipMSX, a meticulously crafted, modernized rendition of the classic MSX2 computer system, designed for enthusiasts and retro computing aficionados. This compact and portable device encapsulates the essence of the MSX2 experience within a sleek, book-like form factor. It leverages the power of a field-programmable gate array (FPGA), specifically the Cyclone IV, to faithfully replicate the original MSX2 hardware, ensuring accurate emulation and compatibility with a vast library of MSX software and games.

  The Msxbook OneChipMSX boasts several enhancements over its vintage counterpart. It features a composite video output for connection to modern displays, alongside a dedicated VGA output, offering crisp and clear visuals. Audio is delivered through a 3.5mm headphone jack, providing convenient connectivity to audio equipment. Storage is handled by an SD card slot, allowing users to load ROMs, disk images, and other data with ease, replacing the traditional floppy disk drive and cartridge slots. A PS/2 keyboard connector allows for the use of standard keyboards, simplifying user interaction. Additionally, a joystick port caters to classic gaming experiences.

  The system's FPGA implementation offers a high degree of accuracy and flexibility. It meticulously emulates the original Z80 processor, the Yamaha V9938 video display processor, and the AY-3-8912 Programmable Sound Generator (PSG), ensuring faithful reproduction of the MSX2's audio-visual capabilities. The integrated SD card controller manages data transfer and storage, facilitating a streamlined user experience.

  The Msxbook OneChipMSX is presented as a fully assembled unit, ready for immediate use upon arrival. The product listing highlights its compact and portable design, making it ideal for on-the-go retro gaming and computing. The device represents a modern approach to experiencing the legacy of the MSX2 platform, combining authentic emulation with contemporary conveniences. It’s targeted towards users seeking a reliable and convenient way to relive classic MSX2 experiences, as well as developers and tinkerers interested in exploring the intricacies of the MSX2 architecture.

  • MSX
  • MSX2
  • OneChipMSX
  • retro computer
  • Vintage Computer
  • 8-bit computer
  • Home Computer
  • DIY computer
  • Single Board Computer
  • FPGA
  • Tindie
  • MSXbook

  Summary of Comments ( 21 )
  https://news.ycombinator.com/item?id=43054473

  Verbose tl;dr

  Hacker News users discussed the OneChipMSX's appeal stemming from nostalgia for the MSX standard, particularly in Europe and South America. Several commenters reminisced about their experiences with MSX computers in their youth. Some expressed interest in the device but questioned the high price, while others debated the practicality of emulating MSX versus owning dedicated hardware. The open-source nature and FPGA implementation were praised. There was some discussion about potential use cases like introducing younger generations to retro computing or connecting to CRT televisions for an authentic experience. The lack of a built-in keyboard was also noted.

  The Hacker News post titled "Msxbook OneChipMSX MSX2 Computer" linking to a Tindie product page has generated several comments discussing various aspects of the MSX standard and the device itself.

  Several commenters reminisce about their experiences with MSX computers during their childhood, highlighting the system's popularity in specific regions like Europe and Brazil. They discuss the significance of the MSX standard in democratizing computing during the 80s, offering a more affordable alternative compared to other contemporary systems. The conversation also touches upon the MSX's role as an entry point for many into programming, with some users recalling writing their first programs on these machines.

  The compact form factor of the Msxbook draws attention and praise, with commenters appreciating its portability and resemblance to a netbook. The integrated keyboard and the inclusion of a VGA port are seen as positive features, enhancing the device's usability.

  There's a discussion regarding the OneChipMSX project, an open-source initiative aimed at replicating MSX hardware using FPGA. Commenters express interest in the project and its potential for preserving the MSX legacy, allowing future generations to experience these classic computers.

  Some comments delve into the technical specifications of the Msxbook, including its Z80 processor and limited RAM. The discussion explores the performance limitations imposed by these specifications, acknowledging that while the system may not handle more demanding MSX2 titles smoothly, it's still capable of running a wide range of software, especially from the MSX1 era.

  The comments also touch on the availability and pricing of the Msxbook. Commenters discuss the device's niche appeal and the potential challenges in acquiring one, given its limited production run. The general sentiment is one of curiosity and enthusiasm for the project, albeit tempered by pragmatic considerations regarding its price and performance.

  Finally, a few comments mention alternative MSX emulators and FPGA implementations, offering further avenues for exploring the MSX ecosystem. These suggestions cater to those interested in experiencing MSX software without necessarily purchasing the Msxbook itself. This suggests that the post sparked broader interest in the MSX platform beyond just the specific hardware on offer.

• Minimal 64x4 Home Computer

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  Posted: 2025-01-22 16:08:59

  Verbose tl;dr

  This project details the creation of a minimalist 64x4 pixel home computer built using readily available components. It features a custom PCB, an ATmega328P microcontroller, a MAX7219 LED matrix display, and a PS/2 keyboard for input. The computer boasts a simple command-line interface and includes several built-in programs like a text editor, calculator, and games. The design prioritizes simplicity and low cost, aiming to be an educational tool for understanding fundamental computer architecture and programming. The project is open-source, providing schematics, code, and detailed build instructions.

  This GitHub repository, titled "Minimal 64x4 Home Computer," details a project by user "slu4coder" to create a rudimentary yet functional home computer from scratch using readily available and affordable components. The project focuses on minimizing complexity and cost while still providing a tangible demonstration of fundamental computer architecture principles. The computer features a minuscule 64x4 pixel monochrome OLED display as its primary output, severely limiting graphical capabilities but remaining sufficient for displaying basic text and simple shapes. Processing power is provided by an ATtiny85 microcontroller, a small, low-power chip typically used for embedded systems, indicating the system's limited computational abilities. Data input is facilitated through a 4x4 matrix keypad, allowing for limited user interaction, likely restricted to numerical input and simple commands.

  The project's core functionality revolves around a custom-designed operating system and a limited set of built-in programs, all residing within the ATtiny85's constrained memory. The repository includes the source code for these programs, written in assembly language, showcasing the low-level programming required for such a resource-constrained environment. The provided code handles tasks such as displaying text on the OLED screen, managing input from the keypad, and executing basic arithmetic operations. Furthermore, the project documentation meticulously outlines the hardware setup, including circuit diagrams, component lists, and assembly instructions, enabling others to replicate the build process. This comprehensive documentation emphasizes the educational aspect of the project, allowing individuals to gain practical experience with microcontroller programming, hardware interfacing, and fundamental computer architecture concepts. While the resulting computer is not powerful enough for modern computing tasks, it serves as a valuable learning tool and a tangible representation of a computer system built from its most basic elements. The project exemplifies the spirit of minimalist computing, demonstrating that even with limited resources, a functional and educational computing platform can be realized.

  • 64x4
  • homebrew computer
  • minimal computer
  • DIY computer
  • FPGA
  • Verilog
  • Hardware Design
  • Computer Architecture
  • Retrocomputing
  • Embedded Systems

  Summary of Comments ( 22 )
  https://news.ycombinator.com/item?id=42794232

  Verbose tl;dr

  HN commenters generally expressed admiration for the project's minimalism and ingenuity. Several praised the clear documentation and the creator's dedication to simplicity, with some highlighting the educational value of such a barebones system. A few users discussed the limitations of the 4-line display, suggesting potential improvements or alternative uses like a dedicated clock or notification display. Some comments focused on the technical aspects, including the choice of components and the challenges of working with such limited resources. Others reminisced about early computing experiences and similar projects they had undertaken. There was also discussion of the definition of "minimal," comparing this project to other minimalist computer designs.

  The Hacker News post titled "Minimal 64x4 Home Computer" (https://news.ycombinator.com/item?id=42794232) has generated several comments discussing various aspects of the project.

  A recurring theme is the appreciation for the minimalist approach and the ingenuity of creating a functional computer with such limited resources. Commenters praised the project for its educational value, highlighting how it demystifies computer architecture and provides a tangible example of fundamental computing principles. The simplicity of the design makes it accessible for learning and experimentation.

  Several commenters drew parallels to other historical or minimalist computing projects, mentioning similar endeavors and discussing the lineage of such creations. This placed the project within a broader context of minimalist computing and highlighted its connection to earlier innovations.

  There was some discussion about the practicality and potential applications of such a limited computer. While acknowledging its limitations, some commenters suggested potential uses for simple control systems or dedicated embedded applications where a full-fledged computer would be overkill.

  The choice of display resolution (64x4) also sparked conversation. Commenters discussed the trade-offs involved in choosing such a low resolution and explored the possibilities of maximizing its utility through clever software design. Some suggested potential applications where this limited resolution could be sufficient.

  The open-source nature of the project was also commended, with users appreciating the availability of the design files and software, allowing for modification, customization, and further exploration by others. This fostered a sense of community engagement and collaborative development.

  Finally, some comments focused on the technical details of the project, inquiring about specific design choices, hardware components, and the programming language used. This technical discussion contributed to a deeper understanding of the project's implementation.