Combination Board for MB020

Introduction

FRR512K is modified to serve as the combination board for MB020. The combination board implements the serial port, bootstrap ROM, and compact flash drive functions.

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Features

  • Repurposed FRR512K board
  • 64KB bootstrap EPROM for MB020
  • Compact flash drive
  • Serial port with setting of 115200, N81 with hardware handshake
  • Design to run CP/M68K on MB020

Design Files

Schematic

Engineering Changes

www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_frr512k_rev0_frr512k_combo_mb020.jpg

CPLD design files

Software

Bootstrap EPROM for MB020

CP/M68K for combo. The three files included need to be loaded; type “go 15000” afterward.

builderpages/plasmo/frr512k/rev0/mb020combo.txt · Last modified: 2021/12/19 14:14 by plasmo
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