This document presents the DECstation 2040, a RP2040-based emulator that mimics the DECstation 3000 and supports DECWindows. The hardware features include RP2040 running at 1.8v/300 MHz, 32 MB of PSRAM, and Monochrome VGA at 1024 x 864. Software-wise, it offers USB HID support for keyboard and mouse, along with advanced memory and DMA capabilities. The project originated from Dmitry’s LinuxCard and incorporates innovative solutions for driving the video and PSRAM PIO engines. The journey of building this emulator has been filled with challenges and learning moments, resulting in a unique and impressive end product. The next steps include enhancing cursor PSRAM commands and adding Ethernet emulation.
https://github.com/rscott2049/DECstation2040