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???
07/02/10 01:13
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 		 #177043 - OCD
Responding to: ???'s previous message
AT89LP6440 datasheet said:24. On-Chip Debug System
The AT89LP6440 On-Chip Debug (OCD) System uses a two-wire serial interface to control program flow; read, modify, and write the system state; and program the nonvolatile memory. The OCD System has the following features:
• Complete program flow control
• Read-Modify-Write access to all internal SFRs and data memories
• Four hardware program address breakpoints, plus four program/data address breakpoints
• Unlimited program software breakpoints using BREAK instruction
• Break on change in program memory flow
• Break on stack overflow/underflow
• Break on Watchdog overflow
• Break on reset
• Non-intrusive operation
• Programming of nonvolatile memory
http://www.atmel.com/dyn/resou...c3706A.pdf


still not clear with OCD and how the feature is used while debugging hex file
in place of simulater???

List of 40 messages in thread
TopicAuthorDate
8051 core mc with adc            01/01/70 00:00      
   8051 in PDIP            01/01/70 00:00      
   it's time to give up            01/01/70 00:00      
   AT89LP6440            01/01/70 00:00      
      Only hunt DIL if this is a one-off hobby project            01/01/70 00:00      
      AT89LP6440            01/01/70 00:00      
         if you are worried about the cost ...            01/01/70 00:00      
            why not DIP?            01/01/70 00:00      
               Vcc decoupling can be critical...            01/01/70 00:00      
               SMD is far better than a DIP            01/01/70 00:00      
               oh yes, there is            01/01/70 00:00      
                  dip package            01/01/70 00:00      
                     Most SMD are manually solderable            01/01/70 00:00      
                        agree with Per            01/01/70 00:00      
               One & only advantage of DIP?            01/01/70 00:00      
                  DIP not bad - but not economical or future proof            01/01/70 00:00      
               only in relation to ...            01/01/70 00:00      
         Use ISP programming...            01/01/70 00:00      
            original isp cable            01/01/70 00:00      
               With a simple piece of code...            01/01/70 00:00      
                  onchip debug features            01/01/70 00:00      
                     rather            01/01/70 00:00      
                        AT89LP6440            01/01/70 00:00      
                           You don't *need* to change much            01/01/70 00:00      
                              OCD            01/01/70 00:00      
                                 OCD is (almost) an on-chip ICE            01/01/70 00:00      
                                    OCD            01/01/70 00:00      
                                       That's about it            01/01/70 00:00      
                                          keil            01/01/70 00:00      
                                             if it is PK51            01/01/70 00:00      
                                             See Keil website            01/01/70 00:00      
                                                even if it is not there            01/01/70 00:00      
                                       not quite            01/01/70 00:00      
                                          not quite - nearly            01/01/70 00:00      
                     RE: i will have to study the data sheet            01/01/70 00:00      
            original cable            01/01/70 00:00      
               what does ISP have to do with simulation?            01/01/70 00:00      
                  Nothing - but did he mean "emulator" ?            01/01/70 00:00      
   why noy use some LPC ADC?            01/01/70 00:00      
   8051 core mc with adc            01/01/70 00:00      

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