FPLA editing

A critical feature of FPLAs, absent in bipolar PROMs, is their editing capability. A number of modifications can be incorporated in a program already stored in the FPLA. Specifically in some FPLAs, product terms can be added or deleted from any output function, input variables can be deleted from any output function, and input variables can be deleted from any product terms. Also, outputs programmed activehigh can be reprogrammed to activelow. This offers a good degree of flexibility, comparable with the versatility afforded by erasable MOS PROMs.; FPLA的一個重要特征,具有雙極性PROM所沒有的編輯功能,能把大量的修改程序插入已經 存儲在FPLA中的程序中去。特別是在某些FPLA中,可以從任何輸出功能中增加或刪除產生項, 從任何輸出功能中刪除輸入變量,而且可以從任何產生項中刪除輸入變量,也可以把編寫的高 效輸出程序改編為低效輸出程序。這些功能提供了很好的靈活性,類似于可擦除的MOS PROM 的多功能性。