Here is a list of all files with brief descriptions:

alu_bin.c	Binary and decimal (unpacked) arithmetic helpers for the GE-120/130
alu_bin.h	Binary and decimal (unpacked) arithmetic helpers for the GE-120/130
alu_cc.c
alu_cc.h
alu_dec.c	GE-130 packed/signed decimal ALU helpers
alu_dec.h	GE-130 packed/signed decimal ALU helpers
alu_logic.c	GE-120/130 ALU logical and string-move primitives
alu_logic.h	GE-120/130 ALU logical and string-move primitives
alu_reg.c	ALU helpers for GE-120/GE-130 register and memory-field operations
alu_reg.h	ALU helpers for GE-120/GE-130 register and memory-field operations
binimage.c
binimage.h
bit.h	Bit manipulation helpers
cap.c
cap.h
cardreader.c
cardreader.h
channel.c
channel.h
connector34.c
connector34.h
console.c
console.h
console_socket.c
console_socket.h
disasm.c
disasm.h
disk.c
disk.h
mainpage.h
ge.c
ge.h
gecode.c
gecode.h
log.c
log.h
main.c
msl-commands.c
msl-comments.h
msl-states.c
msl-timings.c
msl-timings.h
msl.c
msl.h
opcodes.h
peripherical.c
peripherical.h
printer.c
printer.h
pulse.c
reader.c
reader.h
sat_batches.c
sat_batches.h
signals.h	Signals
tape.c
tape.h
transcode.c
transcode.h