在quartus II环境下用Verilog实现了8255, 8253, 8259, 8250, DAC0832, ADC0809等微机接口芯片，硬件设计实验课的作品，有些芯片的功能有所简化，但最基本的功能已实现，有完整的时序仿真波形-In quartus II environment achieved with Verilog 8255, 8253, 8259, 8250, DAC0832, ADC0809 and other computer interface chip, hardware