File list (Check if you may need any files):
LDmicro
.......\C51
.......\...\BIN
.......\...\...\A51.EXE
.......\...\...\AX51.exe
.......\...\...\BL51.EXE
.......\...\...\C51.DLL
.......\...\...\c51.exe
.......\...\...\CO-KC51.LNT
.......\...\...\cx51.exe
.......\...\...\L51.dll
.......\...\...\LX51.EXE
.......\...\...\OC51.EXE
.......\...\...\OH51.EXE
.......\...\...\Ohx51.exe
.......\...\...\STARTUP.A51
.......\...\...\STARTUP.LST
.......\...\...\STARTUP.OBJ
.......\...\LIB
.......\...\...\C51S.LIB
.......\...\...\CALLOC.C
.......\...\...\CX51S.LIB
.......\...\...\FREE.C
.......\...\...\GETKEY.C
.......\...\...\INIT.A51
.......\...\...\INIT_MEM.C
.......\...\...\INIT_MX.A51
.......\...\...\INIT_TNY.A51
.......\...\...\L51_BANK.A51
.......\...\...\MALLOC.C
.......\...\...\MX51BANK.A51
.......\...\...\PUTCHAR.C
.......\...\...\REALLOC.C
.......\...\...\SETJMP.A51
.......\...\...\START390.A51
.......\...\...\START4XX.A51
.......\...\...\START751.A51
.......\...\...\START900.A51
.......\...\...\STARTLPC.A51
.......\...\...\Startu32.a51
.......\...\...\STARTUP.A51
.......\...\...\Startup33.a51
.......\...\...\startup34.a51
.......\...\...\START_AD.A51
.......\...\...\START_MX.A51
.......\...\...\XBANKING.A51
.......\COMCTL32.OCX
.......\Compre.dll
.......\Config.ini
.......\Demo.txt
.......\ldmicro.exe
.......\MCUISP.exe
.......\mcuisp.png
.......\MSCOMCHS.DLL
.......\MSCOMM32.OCX
.......\Readme.txt
.......\STC.ocx
.......\TOOLS.INI