| ??? 02/27/07 18:54 Read: times |
#133868 - you can't, the most you can get is 248 (256 - one Responding to: ???'s previous message |
i am facing a problem of making the full use of 256 bytes of on chip ram available in 89s52 micro controller using Keil software.
you can't, the most you can get is 248 (256 - one register bank) do i need to specify the variables that are stored outside the 128 using any identifiers. YES and it is in the manual. I could answer this easily enough, but it is obvious to me that if I do, you will next day come back with a question at the same level, thus I suggest you spend a while perusing the manual. In addition, the question indicates a basic unfamiliarity with the '51 architecture and thus I shall add "the bible" to the required reading Erik here are the links to "the bible" Chapter 1 - 80C51 Family Architecture: http://www.nxp.com/acrobat_d...ARCH_1.pdf Chapter 2 - 80C51 Family Programmer’s Guide and Instruction Set: http://www.nxp.com/acrobat_d...UIDE_1.pdf Chapter 3 - 80C51 Family Hardware Description: http://www.nxp.com/acrobat_d...WARE_1.pdf |
| Topic | Author | Date |
| using 256 bytes of ram 0f 8052 in keil | 01/01/70 00:00 | |
| you can't, the most you can get is 248 (256 - one | 01/01/70 00:00 | |
| Keil internal ram | 01/01/70 00:00 | |
| resons for extending memory | 01/01/70 00:00 | |
| it is, and thus it takes many reads | 01/01/70 00:00 | |
| lookup | 01/01/70 00:00 | |
| not necessarily correct | 01/01/70 00:00 | |
| There is limit | 01/01/70 00:00 | |
| Try it if you think its wrong :) | 01/01/70 00:00 | |
| wht a bunch of gobbelygook! | 01/01/70 00:00 | |
| Qualifers | 01/01/70 00:00 | |
| Sloppy | 01/01/70 00:00 | |
| Maybe | 01/01/70 00:00 | |
| problem solved | 01/01/70 00:00 | |
| You Must Read | 01/01/70 00:00 | |
RTFMs | 01/01/70 00:00 | |
| What??? | 01/01/70 00:00 | |
| The solution could be as simple as: | 01/01/70 00:00 | |
| just note about size | 01/01/70 00:00 |