File list (Check if you may need any files):
c51v7
.....\C51
.....\...\ASM
.....\...\...\REG51.INC
.....\...\BIN
.....\...\...\A51.EXE
.....\...\...\BL51.EXE
.....\...\...\C51.DLL
.....\...\...\C51.DPP
.....\...\...\C51.EXE
.....\...\...\MAKE.EXE
.....\...\...\OC51.EXE
.....\...\...\OH51.EXE
.....\...\C51V7.txt
.....\...\INC
.....\...\...\ABSACC.H
.....\...\...\INTRINS.H
.....\...\...\MATH.H
.....\...\...\REG52.H
.....\...\...\STRING.H
.....\...\LIB
.....\...\...\C51FPS.LIB
.....\...\...\C51S.LIB
.....\...\TOOLS.INI