Hi, ERIC. Thank you very much. Can the code of the chip be read? Is there any protect bit or not? How to dupilcate the chip? I am fixing an old machine. yes it's a keyboard decoder. AY-5-3600-PRO PRO-050 GI........ Thanks a again, Eric. James Chu bigchu@ms11.hinet.net -----原 [Big Chu] 始郵件----- >寄件者: Eric Naus [SMTP:bine@IDIRECT.COM] 傳送時間: 1997年10月1日 AM 06:14 收件者: PICLIST@MITVMA.MIT.EDU 主旨: Re: ask for help. AY-5-3600-PRO Hi, I have the Data sheet you are looking for. It's in the General Instrument Microelectronics Product Catalog dated 1980. I could scan the data. It is a Keyboard Encoder and Prom/Eprom Application. It is the same as the AY-5-3600 except that the output is binary coded so that it can address an external prom/eprom which then outputs the required character(what ever you want). Let me Know Bye for now Eric Naus At 11:50 AM 9/30/97 +0800, you wrote: >-----原始郵件----- >寄件者: Mark [SMTP:mbolding@uab.edu] >傳送時間: 1997年9月13日 AM 02:01 >收件者: PICLIST@MITVMA.MIT.EDU >主旨: ask for help. AY-5-3600-PRO > > > Hi. > I am looking for the data sheet of " AY-5-3600-PRO". > ---------------------------------------------'' PRO-050 ' > > The chip is very old. > It's produced by GI ( could be Microchip) company. > > It's really thanks for anyone who tell me where to get such data sheet. > > Thanks first. > > Have a nice day. > > James Chu bigchu@ms11.hinet.net > > > > >