基于NIOS的SCSI应用系统设计

介绍一种基于可编程片上系统和处理器软核技术的SCSI应用系统的设计方案，其应用系统控制核心选用了基于NIOS软核的微处理器，将SCSI控制单元的外部主机处理器，DMA数据通道控制和数据缓存控制逻辑等集成在1片FPGA上实现，在能充分利用逻辑器件资源的同时，使得设计更紧凑、灵活、高速和可靠。

Design of the SCSI Application System Based on NIOS

One novel design for SCSI controller is put forward on the basis of SOPC and the soft processor IP core technology.The NIOS soft processor IP core is chosen as the center controller in the application system.Except for NIOS processor,most of the peripherals around the SCSI module,including DMA data channel and data cache control logic,are integrated into one FPGA chip.Comparing with the traditional design method,the new design has more advantages in the integration,scalability,speed and reliability,and can make full use of the FLD resources.