Nascom sd

NASCOM

Software, utilities and documentation for the Z80-based NASCOM computers.

• PolyDos - code and documentaton for this excellent NASCOM operating-system
• ROM - NASCOM ROM images (monitors etc), most including source code
• converters - scripts for manipulating NASCOM disk and binary images
• doc
  • NASCOM 1 RAM expansion (tested) -- see nascom1_expansion for PCB
  • NASCOM 2 RAM expansion (untested)
  • NASCOM Keyboard -- waveforms and description of the software-scanned keyboard
  • NASCOM UART performance -- an attempt to understand the (speed) limitations of the NASCOM UART
• gm808_eprom_programmer - code, photos and documentation for this 2708/2716 EPROM programmer
• hw_sim - verilog simulation of the NASCOM 1 and NASCOM 2 video sub-systems
• m5 - a very simple "high-level language"
• nascom 4 - a NASCOM re-imagined for the 21st-century FPGA age
• programs - miscellaneous code
• nascom_kbd - Uses a Raspberry Pi Pico to interface a PS/2 keyboard to the NASCOM
• sdcard - Arduino-based SDcard storage. There are 2 versions:
  • A version that connects to the serial port instead of a tape recorder, and works with NAS-SYS tape commands
  • A version that connects to the PIO, with all supporting software to run PolyDos and to extract data from your old floppies
  • NEW: a PCB and a detailed user guide
• nascom1_expansion - a 100mm x 100mm PCB that breaks into pieces to provide sdcard, RAM card and connector adaptors

Projects in planning

At the concept stage..

• Get NASCOM CP/M running on a NASCOM 2 without the need for a special NASMD PROM

Comments/improvements

• Email me or use the 'issues' button at the top on the github page.

• Fork the project and make a merge request