| ??? 07/22/08 01:49 Read: times |
#156920 - incrementing a large number in assembly |
check my work - does the following appear correct?
Here is the setup. I am storing a 8 digit number in a EEPROM. I am using 8 locations in the EEPROM and each location only uses the first nibble to store a number between 0 and 9. I read all 8 nibbles in to registers 60H (LSN) through 69H (MSN). I set a pointer to 5FH The routine flows as follows. Upon exiting the subroutine registers 60H through 69H are put back into the EEPROM. ############################# START: increment pointer does it equal 6AH? if so exit subroutine if not increment the number in the register the pointer points to does this number now equal 0AH? if not exit subroutine if the number does equal 0AH then make it 00H jump back to START of subroutine ################################# My goal is to have a counter that will increment by one each time the subroutine is called and be able to store a number from 0 to 99,999,999 in the EEPROM Anyone see a flaw in the above logic flow? Why only the lower nibble? Because later I want to be able to add 30H to each nibble and print the big number to a printer in ASCII format. |
| Topic | Author | Date |
| incrementing a large number in assembly | 01/01/70 00:00 | |
| Wear and tear | 01/01/70 00:00 | |
| The EEPROM is | 01/01/70 00:00 | |
| F-RAM | 01/01/70 00:00 | |
| F-RAM problem | 01/01/70 00:00 | |
| what's the problem? | 01/01/70 00:00 | |
| found a substitute | 01/01/70 00:00 | |
| first do it in C, then | 01/01/70 00:00 | |
| Load/Save in loop | 01/01/70 00:00 | |
| To Answer Your Question ... | 01/01/70 00:00 | |
| Thanks Russ - slow event | 01/01/70 00:00 | |
| A sample code for your task | 01/01/70 00:00 | |
| Sample code irrelevant | 01/01/70 00:00 | |
| Socketed EEPROM? | 01/01/70 00:00 | |
| walking writes are dead simple | 01/01/70 00:00 | |
| Larger EEPROM = simple code | 01/01/70 00:00 | |
| the counter is | 01/01/70 00:00 | |
| good point | 01/01/70 00:00 | |
Blinkers | 01/01/70 00:00 |