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???
04/19/07 04:05
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 		 #137497 - I made correction already.
Responding to: ???'s previous message
Sorry mike, As I stated in an earlier post I described the 573 wrong. And the location of Vcc is on pin 40. As I believe is standard for a digital chip. I also discovered that the Xtal1 line from the main MCU directly connects to this chip and The RST pin from the main MCU does also.

List of 31 messages in thread
TopicAuthorDate
Identify a chip.            01/01/70 00:00      
   why a chip            01/01/70 00:00      
      it's for a friend.            01/01/70 00:00      
         it's for a friend            01/01/70 00:00      
            defective programmed chip.            01/01/70 00:00      
   An 8051?            01/01/70 00:00      
      just an another 8051 with ROMed firmware?            01/01/70 00:00      
      corrections            01/01/70 00:00      
         "it would have to be way newer"            01/01/70 00:00      
            Legacy stuff ?            01/01/70 00:00      
               Philips (c) 1989 Intel (c) 1980            01/01/70 00:00      
         no clock?            01/01/70 00:00      
            I did some probing.            01/01/70 00:00      
               also EA is.            01/01/70 00:00      
            crazy.            01/01/70 00:00      
               One for X and one for Y?            01/01/70 00:00      
                  No...I don't think.            01/01/70 00:00      
                     You're referring to a milling machine, right?            01/01/70 00:00      
   8279?            01/01/70 00:00      
   Conclusion            01/01/70 00:00      
      how do you know that it is dead?            01/01/70 00:00      
         used a scope.            01/01/70 00:00      
            the standard checklist            01/01/70 00:00      
   suggestions            01/01/70 00:00      
      I made correction already.            01/01/70 00:00      
         careful now ...            01/01/70 00:00      
   Screw it            01/01/70 00:00      
      Better yet...            01/01/70 00:00      
         Hurco            01/01/70 00:00      
      Know that's Cool.            01/01/70 00:00      
      Looks like the old Bridgeport ...            01/01/70 00:00      

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