The source files decus-8-152.pal and decus-8-152a.pal were
retyped from the listings in decus-8-152-lst.pdf.  Additional
code from Kyle's 152a source (coding.pal) was used to fill
in the missing code from the truncated part of decus-8-152-lst.pdf.

Kyle's tape images were also used for the .bn binary images.

The Music.txt file explains the music file format, which is 
output by the "uncode" Perl scrip, and input by decus-8-152a.

The SIMH script "docode" patches 152a to output to the HSR,
and to accept 7-bit ASCII.  It then runs it under SIMH to
generate code.bin from the code.txt file.

The source files were augmented with disassembly and extensive
comments to create vrs-152.pp and vrs-152a.pp.  Thw Makefile 
also has intructions to make and verify versions "0x0x" and 
"0102" of the player and the compiler.

The Makefile contains the rules build the rest of the files.

The .ms files here are as output by Perl, without mark parity.
Mark parity is required by both unpatched versions of 152a.
 
The .bin versions have valid checksums -- the .bn originals
did not, presumably because they were compiled on Kyle's version.