Rearrange directory structure of repository into a more maintainable form; add README files for each component.

APL-WU-Kildall/README.txt

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+APL\B5500
+
+APL interpreter for the Burroughs B5500, written by Gary Kildall (of
+CP/M fame), Leroy Smith, Sally Swedine, and Mary Zosel at Washington
+University (Seattle, Washington, US) in the early 1970s. This version
+was modified by Jose Hernandez of Burroughs Corporation for operation
+under the Timesharing MCP.
+
+The source was transcribed from a photocopy of a listing donated by
+Ed Vandergriff of Chaska, Minnesota, US. According to Ed, this listing
+probably originated from the Georgia Institute of Technology (Georgia
+Tech) in Atlanta, Georgia, US.
+
+Transcription was performed jointly by Hans Pufal of Angouleme, France
+and Fausto Saporito of Naples, Italy during August-September 2013.
+

B6500-Simulator/README.txt

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+Burroughs B6500 Simulator and Early MCP
+
+B65SIM.alg_m is a simulator for the B6500 written in a variant of B5500
+Extended Algol, termed LONGALG. This variant implement a "Long Array"
+type, which appeared to the programmer to be a single-dimensional array,
+but was implemented as a two-dimensional array. The compiler generated
+code to partition the array index into column and row portions, and
+index the row and column accordingly.
+
+B65ESPOL.alg_m is an early implementation of an ESPOL cross-compiler for
+the B6500, written to run on the B5500. We believe that Don Lyle was the
+principle implementor of this compiler.
+
+B65MCP-MARK00.esp_m is a very early version of the B6500 MCP. It is
+notable for its use of ESPOL Queue structure, which eventually proved to
+be too expensive at run time, and were removed in the Mark II.0 release.
+
+These files were transcribed by James Fehlinger of New Jersey, US in
+mid-2014, from scans of listings provided by Al Kossow of bitsavers.org.
+
+

EULER-Wirth/README.txt

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+EULER Compiler for the Burroughs B5500
+
+An implemention for the EULER language, designed by Niklaus Wirth,
+apparently while he was in residence at Stanford University (California,
+US).
+
+These files were transcribed by James Fehlinger of New Jersey, US,
+during March 201, from "EULER: A Generalization of Algol and its Formal
+Definition," Niklaus Wirth and Helmut Weber, Stanford University
+Technical Report CS20, 27 April 1965.
+

LICENSE

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 The MIT License (MIT)
 
-Copyright (c) 2016 retro-software
+Copyright (c) 2016 Nigel Williams and Paul Kimpel
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

LISP-Fort-Monmouth/README.txt

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+LISP Interpreter for the Burroughs B5500
+
+This implementation is reputed to have come from the B5500 installation
+at Fort Monmouth, New Jersy, US.
+
+Transcribed from http://bitsavers.org/pdf/burroughs/B5000_5500_5700/
+listing/B5700_Lisp_Apr77.pdf by Fausto Saporito of Naples, Italy.
+

Mark-XIV/README.txt

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+Transcriptions of Burroughs B5500 Mark XIV Listings
+
+The following transcriptions are based on scans of listings available
+from http://bitsavers.org/pdf/burroughs/B5000_5500_5700/
+listing/mcp_mkXIV/:
+
+SYMBOL/COOL.esp_m was transcribed from MCP_MkXIV_cool.pdf by Nigel
+Williams, with proofing and corrections by Paul Kimpel.
+

Mark-XVI/README.txt

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+Transcriptions of Burroughs B5500 Mark XVI Listings
+
+The following transcriptions are based on scans of listings available
+from http://bitsavers.org/pdf/burroughs/B5000_5500_5700/listing/:
+
+SYMBOL/ALGOL.alg_m was transcribed from B5700_Algol_Oct77.pdf by Nigel
+Williams, with proofing and corrections by Paul Kimpel. This source was
+later used as the base for /Unisys-Emode-Tools/xem/ALGOLXEM.alg_m.
+
+SYMBOL/DCMCP.esp_m was transcribed from B5700_DCMCP_Sep77.pdf by Paul
+Kimpel. Note that as of 2016-05-01, this transcription has not yet been
+proofed.
+
+SYMBOL/ESPOL.alg_m was transcribed from B5700_ESPOL_XVI_Dec76.pdf by
+Hans Pufal of Angouleme, France, with proofing and corrections by Paul
+Kimpel. This source was later used as the base for /Unisys-Emode-
+Tools/xem/ESPOLXEM.alg_m.
+
+SYMBOL/FORTRAN.alg_m was transcribed from B5700_Fortran_Apr77.pdf by
+Fausto Saporito of Naples, Italy.
+
+SYMBOL/KERNEL.esp_m was transcribed from B5700_Symbol_Kernel_May78.pdf
+by Paul Kimpel.
+
+SYMBOL/TSSINT.esp_m was transcribed from B5700_TSS_Intrinsics_May77.pdf
+by Fausto Saporito of Naples, Italy. Note that this transcription is
+presently incomplete and does not contain sequence numbers.
+
+PATCHES/ESPOL-116.txt are patches to SYMBOL/ESPOL.esp_m transcribed from
+B5700_ESPOL_Aug77.pdf by Paul Cumberworth of Adelaide, Australia.
+
+PATCHES/ESPOL-PC-951.txt are patches to SYMBOL/ESPOL.esp_m by Paul
+Cumberworth of Adelaide, Australia that allow the compiler to be
+compiled under Mark XIII Algol.

Unisys-Emode-Tools/README.txt

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+Burroughs B5500-related utility programs for "Emode"
+
+These programs are all written originally for the retro-b5500 emulator
+project, to run under "Emode", the architecture for modern Unisys
+ClearPath MCP systems. These systems are direct descendents of the B5500
+through the B6500, B6x00/B7x00, and A Series systems.
+
+The "xem" programs are B5500 compilers modified to run under Emode.
+"xem" stands for "cross-compiled under Emode".
+
+xem/ALGOLXEM.alg_m is the B5500 Mark-XVI Algol compiler ported to Emode.
+It compiles B5500 Algol programs (using the ASCII character
+substitutions established by retro-b5500) and generates binary B5500
+object code. It is the full compiler, but does not implement merging
+CARD and TAPE source files, nor the CAST library mechanism. It compiles
+from the CARD file only.
+
+xem/ESPOLXEM.alg_m is the B5500 Mark-XVI ESPOL compiler ported to Emode.
+It compiles B5500 ESPOL programs (using the ASCII character
+substitutions established by retro-b5500) and generates both binary
+B5500 code files and EBCDIC "card decks" as disk files. Like ALGOLXEM,
+it does not implement the full source input merging mechanism and
+compiles from the CARD file only.
+
+B5500.POWTEN.alg_m generates B5500 power-of-ten values in octal. The
+output of this program was used to proof the Mark-XVI Algol compiler
+transcription.
+
+BICTOEBCDIC.alg_m converts files coded using 6-bit BIC (B5500 Internal
+Code) to 8-bit EBCDIC. It was specifically designed to convert B5500
+code files generated by ALGOLXEM and ESPOLXEM to a more readable form.
+
+CODEDUMP55.alg_m formats a B5500 code file in octal to a line printer
+file. It also interprets the fields in Segment 0 and the segment
+dictionary. It was written to debug ALGOLXEM.
+
+EMODE.POWTEN.dat_m is the output from B5500.POWTEN.alg_m.
+
+INCL2OMIT.alg_m converts $INCLUDE and $OMIT pragmas in Mark XIII and
+earlier ESPOL source files to the newer $SET OMIT/$POP OMIT scheme used
+by Mark XVI and later compilers. This was written to allow the Mark XIII
+MCP source to be compiled with ESPOLXEM during early development of
+retro-b5500.
+
+NEATUP.alg_m is a source reformatting program for Emode Algol
+originally written by Dave Brown of U.S. Customs in San Diego,
+California, and modified slightly by Paul Kimpel.
+
+NEATUP55.alg_m is a clone of NEATUP.alg_m, modified to reformat the
+transcriptions of the Mark XVI Algol and ESPOL compiler sources as part
+of the ALGOLXEM and ESPOLXEM portations.
+
+NEATUP-ESPOLXEM.alg_m is an MCP CANDE "DO" file containing the NEATUP
+parameters used to reformat the ESPOLXEM source.
+
+NEATUPINFO.alg_m decodes the "Lexicon" tables used by NEATUP. It was
+written as an aid to cloning NEATUP55 from NEATUP.
+

XBASIC-Paisley-College/README.txt

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+XBASIC for the Burroughs B5500
+
+An interactive BASIC interpreter written at Paisley College of
+Technology, now the University of West Scotland, UK. This version runs
+under B5500 CANDE and the TSMCP. It can also be run in batch mode from a
+card deck.
+
+XBASIC.alg_m is the interpreter and was transcribed from
+http://bitsavers.org/pdf/burroughs/B5000_5500_5700/listing/
+B5700_XBASIC_Apr77.pdf by James Fehlinger.
+
+STQB64.BAS is a Star Trek game originally written for Quick Basic and
+donated by James Fehlinger.
+