2.5 SPI总线在单片机系统中的实现
...............................\SPI
...............................\SPI.ASM
...............................\SPI.c
...............................\SPI.lnp
...............................\SPI.LST
...............................\SPI.M51
...............................\SPI.OBJ
...............................\SPI.Opt
...............................\SPI.plg
...............................\SPI.tmp
...............................\SPI.Uv2
...............................\SPI_Opt.Bak
...............................\SPI_Uv2.Bak