This is a ALDEC the company' s 8255IP core, is written in VHDL language, including the documentation and code

C8255\GroupA.vhd
.....\c8255.vhd
.....\c8255core.vhd
.....\groupb.vhd
.....\pullup.vhd
.....\rwctrl.vhd
.....\c8255.qpf
.....\cpu.vhd
.....\db\c8255.db_info
.....\..\c8255.map.qmsg
.....\..\c8255.hif
.....\..\c8255.cbx.xml
.....\..\c8255.sld_design_entry_dsc.sci
.....\..\c8255.cmp.rdb
.....\..\c8255.tis_db_list.ddb
.....\..\c8255.sld_design_entry.sci
.....\..\c8255.eco.cdb
.....\c8255.qsf
.....\c8255.map.summary
.....\c8255.map.rpt
.....\c8255.flow.rpt
.....\c8255.qws
.....\ALDEC8255.pdf
.....\db
C8255

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