/* Imported from Wayback Machine
   Original URL : https://www.retrobrewcomputers.org/doku.php?id=builderpages:plasmo:protorc3:vga6448:vga6448proto
   Snapshot date: 2025-03-15
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*/

==== Table of Contents ====

[[#vga6448_prototype|VGA6448 Prototype]]

[[#introduction|Introduction]]

[[#features|Features]]

[[#design_files|Design Files]]

[[#software|Software]]

====== VGA6448 Prototype ======

===== Introduction =====

Text-based VGA display is simple enough to fit inside 64-macrocell CPLD such as EPM7064S. This is a prototype of such VGA display using ProtoRC3 prototype board. The VGA6448 concept was initially discussed on [[http://forum.6502.org/viewtopic.php?f=10&t=6502|6502.org forum]].

[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=5db429&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/protorc3/vga6448/dsc_64730222.jpg|{{https://www.retrobrewcomputers.org/lib/exe/fetch.php?w=600&h=423&tok=b9409c&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fprotorc3%2Fvga6448%2Fdsc_64730222.jpg?600x423|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_protorc3_vga6448_dsc_64730222.jpg}}]]

[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=244bdc&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/protorc3/vga6448/vga6448proto/dsc_64740222.jpg|{{https://www.retrobrewcomputers.org/lib/exe/fetch.php?w=600&h=435&tok=c7a219&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fprotorc3%2Fvga6448%2Fvga6448proto%2Fdsc_64740222.jpg?600x435|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_protorc3_vga6448_vga6448proto_dsc_64740222.jpg}}]]

===== Features =====

===== Design Files =====

[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:protorc3:vga6448:vga6448proto:vga6448doc_scm.pdf|Schematic]]

[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:protorc3:vga6448:vga6448proto:vga6448_protorc3_no_ps2.zip|CPLD design files]] ← This is an interim release, PS2 keyboard interface is not included

==== Software ====