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前言用单板机进行乐曲演奏,国内外已有许多成熟的程序,但程序太长太烦,占内存很大。如从美国进口的Z80单板机的乐曲演奏程序的主程序占416个内存单元[1]。国内已发表类似的程序,占内存也较多。同时乐曲演奏程序中乐曲数据区的设计不方便,把对应音符的时间常数和拍数分为两个区域,修改极不方便,调试更难。针对这些缺点,我们设计的乐曲演奏主程序内存少,仅占62个单元,并具显示功能。由于数据区的编排合理,调试,
Preface The use of single-board music performance, there are many mature programs at home and abroad, but the program is too long too annoying, accounting for a large memory. For example, the main program of the music playing program of the Z80 SBC imported from the United States occupies 416 memory units [1]. Similar procedures have been published in China, accounting for more memory. In the meantime, the design of the music data area in the music playing program is inconvenient. The time constant and the number of the beats corresponding to the notes are divided into two areas. The modification is very inconvenient and the debugging is more difficult. In response to these shortcomings, we designed the main program memory playing less memory, accounting for only 62 units, and display capabilities. Due to the data area layout is reasonable, debugging,