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/* Imported from Wayback Machine
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   Snapshot date: 2025-11-17
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*/

==== Table of Contents ====

[[#proto65_rev01_a_6502_sbc_based_on_protor5|Proto65 Rev0.1, a 6502 SBC based on Protor5]]

[[#introduction|Introduction]]

[[#features|Features]]

[[#design_information|Design Information]]

[[#software|Software]]

====== Proto65 Rev0.1, a 6502 SBC based on Protor5 ======

===== Introduction =====

This is the link to [[builderpages:plasmo:protor5:proto65|Proto65 Rev0]], an earlier version without the disk-on-module.

This is the link to [[builderpages:plasmo:protor5:proto65:proto65r02|Proto65 Rev0.2]], a later version with I2C bus added

[[builderpages:plasmo:protor5|Protor5]] has a prototype area big enough for a processor, RAM and IDE44 interface. In this evolving project a 6502 CPU along with 128Kx8 RAM and an IDE interface are prototyped on a protor5 board.

[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=97de7a&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/protor5/proto65/proto65r01/proto65_6502_dom_compside.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=600&h=461&tok=265658&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fprotor5%2Fproto65%2Fproto65r01%2Fproto65_6502_dom_compside.jpg?600x461|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_protor5_proto65_proto65r01_proto65_6502_dom_compside.jpg}}]]

[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=0fcd5e&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/protor5/proto65/proto65r01/proto65_6502_dom_solderside.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=500&h=363&tok=097469&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fprotor5%2Fproto65%2Fproto65r01%2Fproto65_6502_dom_solderside.jpg?500x363|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_protor5_proto65_proto65r01_proto65_6502_dom_solderside.jpg}}]]

===== Features =====

Based on protor5

EPM7192SQC160 CPLD

Reset supervisor

CPLD programming header

Reset supervisor

2.1mm X 5.5mm power jack

Oscillator socket for full and 1/2 size can

Serial port interface

Prototype area

6502 CPU testbed

128K 25-ns RAM based on CY7C109-25

IDE44 interface for CF disk

40-pin expansion connector

===== Design Information =====

[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:protor5:proto65:proto65r01:proto65_scm_rev01.pdf|Schematic]]

[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:protor5:proto65:proto65r01:proto65_rev01_cpld_dual_boot_14mhz.zip|CPLD design]]

==== Software ====

[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:protor5:proto65:proto65r01:proto65_rev01_cpldbootrom_dual_boot.zip|Bootstrap ROM]] inside the CPLD

[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:protor5:proto65:proto65r01:proto65_rev0_1_tinyload_release_1_1_21.zip|TinyLoad]], a 256-byte Intel Hex loader.

[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:protor5:proto65:proto65r01:proto65_rev0_1_cfboot_1_1_21.zip|CFboot]], an utility program to write bootstrap program into the Master Boot Record of a CF or DOM disk. It also copy RAM image from 0xC000-0xEDFF into track 0, sector 0xE0-0xF7 of a disk

[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:protor5:proto65:proto65r01:proto65_rev0_1_ehbasic_release_1_1_21.zip|EhBASIC]], Lee Davison's EhBASIC ported to Proto65