Objective
The goal is to convert BASIC programs (in text file form) into the PHC format, a binary used for emulators. The PHC file can then be converted into WAV format for real machines.
How to
This application converts BASIC code to PHC format and is currently in beta test.
Load the file, convert, if ok, save it (donwload folder).
No file loaded...
TO DO
Improve comments and indent in files.
The decrypted PHC binary
Description of the PHC file structure.
Sync header
10 bytes of value A5h
a5 a5 a5 a5 a5 a5 a5 a5 a5 a5
Program name:
6 ASCII characters (padded with 00h if shorter).
nn nn nn nn nn nn
Program body
Repeated blocks of BASIC code encoded in tokens/ASCII.
Each line ends with 00h.
Continue until no more lines.
nn nn nn nn nn 00
End of program marker
This includ the end of the last line.
00 00 00
Line index table (stored in reverse order)
Each entry is 4 bytes:
- AL, AH : memory address of the line (little endian)
- NL, NH : line number (little endian)
The first four bytes are the last line, the last four bytes are the first line.
al ah nl nh ...
Trailer
00h FFh FFh FFh FFh
followed by padding with 00h bytes (18).
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Fixed tail section to mark the end of the file.