File list (Check if you may need any files):
PUB
...\BULK
...\....\MCU
...\....\...\CH375BLK.ASM
...\....\...\CH375BLK.HEX
...\....\MCU_C51
...\....\.......\CH375BLK.C
...\....\.......\CH375BLK.C.bak
...\....\.......\CH375BLK.HEX
...\....\WIN
...\....\...\BULKTEST.C
...\....\...\BULKTEST.EXE
...\....\...\CH375DLL.H
...\....\...\CH375DLL.LIB
...\....\...\MAKEFILE
...\....\...\SPEED372.C
...\....\...\SPEED372.EXE
...\CH372SCH.PDF
...\CH375451.PDF
...\DEMO
...\....\DEMO
...\....\....\CH375DLL.H
...\....\....\CH375DLL.LIB
...\....\....\Debug
...\....\....\.....\Demo.bsc
...\....\....\.....\Demo.exe
...\....\....\.....\Demo.ilk
...\....\....\.....\DEMO.obj
...\....\....\.....\Demo.pch
...\....\....\.....\Demo.pdb
...\....\....\.....\DEMO.res
...\....\....\.....\DEMO.sbr
...\....\....\.....\vc60.idb
...\....\....\.....\vc60.pdb
...\....\....\Demo.aps
...\....\....\DEMO.C
...\....\....\Demo.dep
...\....\....\Demo.dsp
...\....\....\Demo.dsw
...\....\....\DEMO.EXE
...\....\....\DEMO.H
...\....\....\Demo.mak
...\....\....\Demo.ncb
...\....\....\Demo.opt
...\....\....\Demo.plg
...\....\....\DEMO.RC
...\....\....\MAKEFILE
...\....\....\resource.h
...\....\MCU
...\....\...\CH375451.ASM
...\....\...\CH375451.HEX
...\....\MCU_C51
...\....\.......\CH375451.C
...\....\.......\CH375451.HEX
...\MCU_IF
...\......\ASM
...\......\...\CH375A51.ASM
...\......\...\CH375INC.ASM
...\......\C
...\......\.\CH372FRM.C
...\......\.\CH375INC.H
...\TEST
...\....\MCU
...\....\...\TEST.C
...\....\...\TEST.HEX
...\....\WIN
...\....\...\MAKEFILE
...\....\...\TEST.C
...\....\...\TEST.EXE
...\XFIRM
...\.....\ASM
...\.....\...\USBEX.ASM
...\.....\C
...\.....\.\USBEX.C