| ??? 06/09/04 13:07 Read: times |
#72177 - Why I said four instead of five Responding to: ???'s previous message |
Donald Catto said:
But all directly addressable RAM is also indirectly addressable, so it's not a distinct memory space. That was my thinking when I said four, rather than five. See fig 6 in the 80C51 Family Architecture document: http://www.semiconductors.philips.com/acrobat/v...ARCH_1.pdf A similar argument could be applied to PDATA - it's not a distinct memory area, just a different way to access a part of XDATA. To be fair to Gary, he does mention addressing modes as a separate issue from the different memory areas. |
