| ??? 09/28/05 11:26 Read: times |
#101655 - re: XDATA Responding to: ???'s previous message |
hi,
Jan Waclawek said:
The trouble with this definition is, IMHO, that XDATA often refers not only to the on-chip - expanded - memory, but also to the external memories accessed by MOVX - that was also, I think, Andy's point.
So just add yet one more sentence: XDATA In program model: Type of data space located in expanded indirectly-accessible memory (see XRAM) accessed with MOVX. Also may be considered as memory-mapped I/O peripheral. Jan Waclawek said:
Maybe these two should be sometimes distinguished and I think that 8052.com is the right place to agree on definitions - what about iXDATA and xXDATA?
No, I think it is not a good idea to add new terms. For me, it is enough to explain that XDATA may be realized as internal on-chip XRAM, external XRAM or memory-mapped peripheral with any combinations of them. New terms may confuse users, IMHO. Regards, Oleg |
| Topic | Author | Date |
| glossary | 01/01/70 00:00 | |
| Dunno, but... | 01/01/70 00:00 | |
| glossary | 01/01/70 00:00 | |
| "external" | 01/01/70 00:00 | |
| explain | 01/01/70 00:00 | |
| indirect? | 01/01/70 00:00 | |
| Flash | 01/01/70 00:00 | |
| XRAM | 01/01/70 00:00 | |
| X? | 01/01/70 00:00 | |
| XRAM | 01/01/70 00:00 | |
| MOVX is the key | 01/01/70 00:00 | |
| access | 01/01/70 00:00 | |
| Sort of | 01/01/70 00:00 | |
| wikish | 01/01/70 00:00 | |
| memory types and datatypes | 01/01/70 00:00 | |
| precise | 01/01/70 00:00 | |
| maybe like this | 01/01/70 00:00 | |
| XDATA | 01/01/70 00:00 | |
| re: XDATA | 01/01/70 00:00 | |
| update | 01/01/70 00:00 | |
| why? does anyone ever look there | 01/01/70 00:00 | |
| We don't understand each other | 01/01/70 00:00 | |
| My understanding of the wiki was that it | 01/01/70 00:00 | |
| wicked | 01/01/70 00:00 | |
| re chip directories | 01/01/70 00:00 | |
| Hang on | 01/01/70 00:00 | |
| sorry | 01/01/70 00:00 | |
| Nope | 01/01/70 00:00 | |
Congrats Steve. | 01/01/70 00:00 | |
| stack =? IDATA | 01/01/70 00:00 | |
| PDATA??? | 01/01/70 00:00 | |
| PDATA | 01/01/70 00:00 | |
| That's the crux | 01/01/70 00:00 | |
| internal external | 01/01/70 00:00 | |
| Is there is difference in... | 01/01/70 00:00 | |
| external vs internal XRAM | 01/01/70 00:00 | |
| or other sfr | 01/01/70 00:00 | |
| ERAM | 01/01/70 00:00 | |
| Wiki Wiki | 01/01/70 00:00 | |
| glossary on wiki | 01/01/70 00:00 |