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====== QuadSer, Hobbyist-friendly Quad Serial Ports Board for RC2014 ======

===== Introduction =====

QuadSer is a RC2014 compatible board based on OX16C954, Quad UART with 128-byte FIFOs.

[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=6d0a14&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/quadser/dsc_66511101.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/quadser/dsc_66511101.jpg?600x339|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_quadser_dsc_66511101.jpg}}]]

===== Features =====

OX16C954 with Quad UART each with 128-byte FIFOs

I/O address is hardwired to 0xC0-0xDF

For RC2014 bus

Jumperable for Motorola (680×0, 6502) or Intel (Z80, Z280) signaling

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

[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:quadser:quadserplcc_rev1_scm.pdf|Schematic]]

[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:quadser:quadserplcc_gerber_rev1.zip|Gerber photoplots]]

[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:quadserplcc:quadser_plcc_bom.pdf|Bill of materials]]

Jumper options

Z80

Z280RC

CRC65 (6502) and CB030 (68030)

==== Software ====

==== Instruction ====

[[builderpages:plasmo:quadserplcc:assembly_instr|Pictorial assembly instruction]]