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--- builderpages:plasmo:frr512k:rev0:mb020combo [2023/09/21 08:29] – Revision from 2023-09-21
+++ builderpages:plasmo:frr512k:rev0:mb020combo [2026/06/15 13:07] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+/* Imported from Wayback Machine
+   Original URL : https://www.retrobrewcomputers.org/doku.php?id=builderpages:plasmo:frr512k:rev0:mb020combo
+   Snapshot date: 2025-03-15
+   Generator    : wayback-archiver
+*/
+====== Combination Board for MB020 ======
+===== Introduction =====
+FRR512K is modified to serve as the combination board for [[builderpages:plasmo:mb020|MB020]]. The combination board implements the serial port, bootstrap ROM, and compact flash drive functions.
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=d63de2&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/frr512k/rev0/dsc_66991215.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/frr512k/rev0/dsc_66991215.jpg?600x238|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_frr512k_rev0_dsc_66991215.jpg}}]]
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=4de185&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/frr512k/rev0/dsc_67001215.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/frr512k/rev0/dsc_67001215.jpg?500x207|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_frr512k_rev0_dsc_67001215.jpg}}]]
+===== Features =====
+Repurposed [[builderpages:plasmo:frr512k:rev0|FRR512K]] board
+KB bootstrap EPROM for MB020
+Compact flash drive
+Serial port with setting of 115200, N81 with hardware handshake
+Design to run CP/M68K on [[builderpages:plasmo:mb020|MB020]]
+===== Design Files =====
+Schematic
+Engineering Changes
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=a3b6bb&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/frr512k/rev0/frr512k_combo_mb020.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/frr512k/rev0/frr512k_combo_mb020.jpg?300x389|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_frr512k_rev0_frr512k_combo_mb020.jpg}}]]
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:frr512k:rev0:frr512k_r0_combo_cpld_mb020.zip|CPLD design files]]
+==== Software ====
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:frr512k:rev0:eprom_combo_mb020.zip|Bootstrap EPROM]] for MB020
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:frr512k:rev0:cpm_for_frr512k_combo_mb020.zip|CP/M68K]] for combo. The three files included need to be loaded; type “go 15000” afterward.