Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
01/18/03 10:14
Read: times


 		 #36709 - RE: higher MIPS / Cygnal Bus
Hi Michael,

"...On normal 8052's this mode of operation when the PDATA and XDATA accesses are mixed together it was necessary to keep updating the P2 port all the time before each MOVX @R0,A type instruction..."


you are wrong !

On all standard 8051 PDATA and XDATA can be used together and P2 must only be set once after reset.

Since access to XDATA use only the P2 output stages, but not change the value of the P2 latch.


Peter


List of 22 messages in thread
TopicAuthorDate
higher MIPS for lower price            01/01/70 00:00      
RE: higher MIPS for lower price            01/01/70 00:00      
RE: higher MIPS for lower price            01/01/70 00:00      
RE: higher MIPS for lower price            01/01/70 00:00      
RE: higher MIPS for lower price            01/01/70 00:00      
RE: higher MIPS for lower price            01/01/70 00:00      
RE: higher MIPS for lower price            01/01/70 00:00      
RE: higher MIPS / Cygnal Bus            01/01/70 00:00      
RE: higher MIPS / Cygnal Bus            01/01/70 00:00      
RE: higher MIPS for lower price            01/01/70 00:00      
RE: higher MIPS / Cygnal Bus            01/01/70 00:00      
RE: higher MIPS for lower -assembler / C            01/01/70 00:00      
RE: higher MIPS for lower -assembler / C            01/01/70 00:00      
RE: higher MIPS for lower -assembler / C            01/01/70 00:00      
RE: higher MIPS for lower -assembler / C            01/01/70 00:00      
RE: higher MIPS for lower -assembler / C            01/01/70 00:00      
RE: higher MIPS for lower -assembler / C            01/01/70 00:00      
RE: higher MIPS for lower -assembler / C            01/01/70 00:00      
RE: higher MIPS for lower -80251            01/01/70 00:00      
RE: higher MIPS for lower -80251            01/01/70 00:00      
RE: higher MIPS for lower -80251            01/01/70 00:00      
RE: higher MIPS for lower -assembler / C            01/01/70 00:00      

Back to Subject List