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*/

==== Table of Contents ====

[[#sb134x_exploring_w65c134|SB134X, Exploring W65C134]]

[[#introduction|Introduction]]

[[#features|Features]]

[[#design_information|Design Information]]

[[#software|Software]]

[[#simpler_w65c134_design|Simpler W65C134 Design]]

====== SB134X, Exploring W65C134 ======

===== Introduction =====

W65C134 is a 6502-based microcontroller with built in ROM, serial port, timers, and discrete I/O. It is capable of 14MHz operation. SB134X is a prototype board for W65C134 with CPLD and RAM to explore various capabilities of W65C134. Here is the [[http://forum.6502.org/viewtopic.php?f=4&t=7913|online discussion]] about SB134X.

[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=4a0908&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/sb134/dsc_75400106.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=600&h=398&tok=20723d&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fsb134%2Fdsc_75400106.jpg?600x398|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_sb134_dsc_75400106.jpg}}]]

===== Features =====

W65C134

EPM7128SQC100 CPLD

128K RAM

Compact flash interface

100mmX100mm PCB with prototype area

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

[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:sb134:sb134x_r0_scm.pdf|Schematic]]

[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:sb134:sb134x_r0_gerber.zip|Gerber photoplots]]

CPLD design files

==== Software ====

===== Simpler W65C134 Design =====

W65C134 computer can be as simple as W65C134 with a 32K of RAM without any glue logic. The RAM is located from $100 to $7FFF and decoded with 65134's chip_select_6 output. This is the [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:sb134:min-sb134x_r0_scm.pdf|schematic]] of the simpler W65C134 design. [[builderpages:plasmo:sb134:sb134_r0:simpler_ec|Engineering changes]] for the simpler W65C134.

[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=2d02c1&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/sb134/dsc_75420108.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=400&h=368&tok=48d6cd&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fsb134%2Fdsc_75420108.jpg?400x368|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_sb134_dsc_75420108.jpg}}]]

[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=701b4c&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/sb134/dsc_75430108.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=400&h=342&tok=885d49&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fsb134%2Fdsc_75430108.jpg?400x342|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_sb134_dsc_75430108.jpg}}]]