In a realm where nostalgia and innovation intertwine, a homebrew computer, powered by the legendary MOS Technology 6502 processor, has taken a daring leap into the future. This remarkable feat brings the convenience of USB mouse support to a machine rooted in the era of Commodore 64 and Apple II. Let’s embark on a journey through time and explore how this remarkable achievement was accomplished.
USB Mouse Support for the 6502 Homebrew Computer
The homebrew computer, meticulously crafted from a modified Ben Eater design, now boasts a sleek custom PCB, streamlining its operation and paving the way for modern peripherals. Computers from the late ’70s and early ’80s, including those powered by the 6502, lacked support for USB mice simply because the USB standard didn’t exist back then. However, this ingenious solution bridges the gap, allowing users to seamlessly connect a USB mouse to their retro machine.
The iRobota Mega as an Ingenious Adapter
To bridge the technological chasm between the 6502 computer and the USB mouse, an iRobota Mega steps into the spotlight as an indispensable adapter. This versatile platform serves as a gateway, enabling communication between the two devices. Equipped with a USB host shield, the iRobota Mega deftly reads data from the mouse, translating it into a language that the 6502 can comprehend.
Sketching the Path to Seamless Communication
A meticulously crafted sketch, residing within the iRobota Mega, plays a pivotal role in facilitating communication. This sketch, a masterpiece of programming, continuously polls the mouse for data and skillfully transmits it to the 6502 processor via the Versatile Interface Adapter (VIA). The VIA, acting as a versatile intermediary, triggers interrupts, signaling the arrival of mouse data. This data is then meticulously written to the VIA ports, awaiting the 6502’s attention.
The 6502 Processor Takes the Reins
With the mouse data safely nestled in the VIA ports, the 6502 processor, a beacon of computing power in its era, takes center stage. Responding swiftly to the interrupts triggered by the VIA, the 6502 deftly retrieves the mouse data, eager to translate it into meaningful actions. Assembly code, the language of the 6502, orchestrates this intricate dance, ensuring that the mouse movements are accurately interpreted and translated into on-screen actions.
A Retro Canvas for Modern Creation
To showcase the remarkable capabilities of this USB mouse integration, a charming drawing program, reminiscent of those found in the late ’70s, graces the homebrew computer’s display. This program, a testament to the enduring spirit of creativity, allows users to unleash their artistic talents, drawing shapes and lines with the newfound precision of the USB mouse. It’s a delightful fusion of retro aesthetics and modern functionality.
Bonus: This remarkable project not only breathes new life into a classic computing platform but also serves as a testament to the enduring power of innovation. It’s a reminder that technology, no matter how advanced, can always be reimagined and repurposed to create something truly unique and inspiring. It’s a celebration of the human ingenuity that continues to push the boundaries of what’s possible.
In conclusion, the integration of USB mouse support into a homebrew 6502 computer is a triumph of creativity and technological prowess. It’s a testament to the enduring legacy of retro computing and the boundless possibilities that arise when we bridge the gap between the past and the present. This project is a beacon of inspiration, encouraging us to explore the untapped potential of technology and to embrace the magic that can be created when we dare to think outside the box.
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