A Fast Display Method of Real-time Dynamic Waveform on Apple-Ⅱ

Abstract

The translation equations among the image spot coordinates,addresses in display buffer area and bit information are abtained in the paper by means of studying the memory dis- tributing characteristics in display buffer fegion of Apple-Ⅱ high resolution ratio image ele- ments. On the basis of this,by employing the method of allocating predetermined comparison table (PCT) and frame information talbe(FIT) in the main memory combined with strong bit information processing,the fast displaying method of real-time dynamic waveform is then achieved. The applying result is proved to be good with the upper frequency bound of signal reaching 3kHz.