IMSAI VIO support (optional based on bootrom choice). ![]() MPU-B style bank-switched ROM and RAM for bootrom masking.4 simulated 8" floppy disks using 256K floppy image files (*.dsk).64K of RAM, however the CP/M 2.2 BIOS is configured for 56K to avoid conflicts with ROMS.The stock imsaisim machine from z80pack is configured with: Running the replica at unlimited speed I can get a simulated clock speed somewhere above 5 MHz, there is certainly no problem with reliably running the simulation at a realistic 2 MHz or 4 MHz making WordStar, SuperCalc2, M80/L80 a pleasure to use. Sometimes I use the USB based serial UART for TTY: (under CP/M) but most of the time I connect over Wi-Fi using a browser to launch the desktop GUI that this port of the imsaisim can serve using an embedded web server. The case is made of 3mm thick aluminium, powder coated blue and also a good match to the original. If you've seen the original IMSAI 8080, I hope you'll agree that the toggle switches are a great match to the original colours. Full size, fully functional replica of the IMSAI CP-A front panel with all LEDs and switches (for scale: the whole unit is 17" wide).MAX232 style RS-232 driver and DE-9M sockets for serial UART.microSD Card for a FAT filesystem (using an 16GB card).These devices have a dual-core CPU 240MHz, 520KB SRAM, 4MB Flash RAM (storage) and builtin Wi-Fi, USB connector for serial UART and programming. ![]() I first ported Udo Munk's z80pack V1.36-dev, specifically the imsaisim machine, to the ESP32 micro-controller targeting the ESP32-PICO-KIT I began working on building an IMSAI 8080 CP-A Front Panel replica in May 2017.
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