中斷是嵌入式系統(tǒng)中處理器的必備功能。文章詳細(xì)論述了設(shè)計(jì)TDN-CM++系統(tǒng)中斷功
能的方法和過(guò)程。提出在復(fù)雜可編程邏輯器件ispLSI1032芯片上設(shè)計(jì)指令譯碼器等硬件電路的設(shè)計(jì)原理、CPU設(shè)計(jì)中微指令格式修改方案和中斷響應(yīng)等微程序流程。最后，將此系統(tǒng)與擴(kuò)充模塊相結(jié)合構(gòu)成整機(jī)系統(tǒng)，搭建測(cè)試平臺(tái)，對(duì)中斷系統(tǒng)進(jìn)行全面的測(cè)試。測(cè)試結(jié)果表明該系統(tǒng)實(shí)現(xiàn)了中斷系統(tǒng)功能。
[關(guān)鍵詞] 中斷實(shí)現(xiàn);ispLSI1032;TDN-CM++
[Abstract] The processor must afford Interruption function in embeded system.The article discusses particularly the design for interruption function based on TDN-CM++ system, brings forward the principium of instruction encoder on ispLSI1032,the modification of microinstruction format and the microprogram flow of response to interruption .To test the interruption system ,puts up the test platform by connecting expansion modules .The result of test indicates that the system implements the interruption function.
[Key words] implement of interruption function;ispLSI1032;TDN-CM++