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???
08/16/09 16:14
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#168362 - I don't use Dallas chips
Responding to: ???'s previous message
I don't use Dallas chips, so I can't really speak about them, but..

JSIM simulator uses 80C320 and instruction
"cjne a, dph, label" always checks SFR 83h
and not 85h, even when DPS is set.

That is probably ok, since '320 has DPTR0 and DPTR1
at two distinct addresses and "cjne a, direct, rel"
just checks a direct address.

'ED2, on the other hand, has only one address for DPTR (82-83h)
and that addr will always provide access to *selected* DPTR.

List of 16 messages in thread
TopicAuthorDate
Dual DPTR debugger?            01/01/70 00:00      
   what style of dual-DPTR?            01/01/70 00:00      
      AT89C51ED2            01/01/70 00:00      
         what 'debugger'?            01/01/70 00:00      
            simulator..            01/01/70 00:00      
            so many options..            01/01/70 00:00      
      that will work            01/01/70 00:00      
         Dallas won't work            01/01/70 00:00      
            many, many moons ago ...            01/01/70 00:00      
               Why not Keil            01/01/70 00:00      
            Check the Dallas datasheet            01/01/70 00:00      
               I don't use Dallas chips            01/01/70 00:00      
   not worth much            01/01/70 00:00      
      It all depends on what you mean by "debugging"            01/01/70 00:00      
         Funny stuff            01/01/70 00:00      
            AT89C51ED2 BETA version released            01/01/70 00:00      

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