| ??? 03/24/10 11:36 Modified: 03/24/10 11:57 Read: times |
#174466 - Atmel 89C5131A-UM Internal memory programming |
First of all, Just would like to point out that I am new with x51 Microprocessors (or Microprocessors in general) so please excuse my lack of in-depth knowledge and lack of experience.
I am trying to build a user "Database" using array, however I dont really understand how do I specify to the compiler to use the build in EPROM? I tried "idata" and just "data", but the compiler gave me an error. And I assume Xdata isnt going to work. I use Keil uVision4 as compiler, 80C5131A-UM for Micro and C51 as programming language. heres the code segment that giving me a hard time unsigned char idata encrypted_password[7000] _at_ 0x0000; unsigned char idata user_name[22400] _at_ 0x1B5A; unsigned char idata user_level[1400] _at_ 0x72DB; EDIT: Also, I am not completely clear on Timers, how do I make a timer count 1milisecond as accurately as possible? |
| Topic | Author | Date |
| Atmel 89C5131A-UM Internal memory programming | 01/01/70 00:00 | |
| compiler specific | 01/01/70 00:00 | |
| Reply | 01/01/70 00:00 | |
| Sample code? | 01/01/70 00:00 | |
| Timers | 01/01/70 00:00 | |
| Timers Reply | 01/01/70 00:00 | |
| Have you looked at the tutorials yet? | 01/01/70 00:00 | |
| it's all for assembler - but that doesn't matter! | 01/01/70 00:00 | |
| Huge amounts of data | 01/01/70 00:00 | |
| disregard the large numbers | 01/01/70 00:00 | |
| No compiler support for EEPROM | 01/01/70 00:00 | |
| compiler handling the EEPROM transparently | 01/01/70 00:00 | |
| I did not know Keil helper functions. | 01/01/70 00:00 | |
| It's part of the "xdata banking" support | 01/01/70 00:00 | |
Previously, on 8052.com... | 01/01/70 00:00 |