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12/29/02 17:13
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#35189 - RE: 8255 alternatives
Hi Steven

I think, that a modern alternative to the stone edge 8255 device, is a CPLD. Lattice, Xilinx, Atmel and so on. If you chose a MACH4A or a XC9500 device, all u need is a JTAG interface cable - cost abt. 50 USD. Or you can make it quite simpel your self. Software for writing the logic is available free of charge on the web.

BTW - you dont need ports to connect a std. LCD to a 80C31. The standard HD44780 type displays are made to be memorymapped. All you need is some adressdecoding.

Godt nytår

Per Guldmann

List of 10 messages in thread
TopicAuthorDate
8255 alternatives            01/01/70 00:00      
RE: 8255 alternatives            01/01/70 00:00      
RE: 8255 alternatives            01/01/70 00:00      
RE: 8255 alternatives - Searching            01/01/70 00:00      
RE:Forum bug            01/01/70 00:00      
RE: 8255 alternatives            01/01/70 00:00      
RE: 8255 alternatives, also            01/01/70 00:00      
RE: 8255 alternatives            01/01/70 00:00      
RE: 8255 alternatives - 74HC595            01/01/70 00:00      
RE: 8255 alternatives - 74HC595            01/01/70 00:00      

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