??? 09/28/04 07:41 Read: times |
#78232 - RE: BOOTLOADER Responding to: ???'s previous message |
hi,
here is the part of your code: GoToBoot: MOV AUXR1,#020H MOV R0,#11 MOV R1,#06H MOV DPTR,#00H MOV A,#0FFF0H SETB P2.2 ; buzzer on CALL DELAY CLR P2.2 ; buzzer off MOV R1,#0FFH DJNZ R1,$ SETB P2.2 ; buzzer on CALL DELAY CLR P2.2 ; buzzer off LCALL 0FFFHCould you make more comments please? For example, why do you load R0, then R1, DPTR and A before call Delay()? Does subroutine DELAY modify any registers? Why do you call 0xFFF??? What are placed there? And finally: what is this program for? Thanks, Oleg |
Topic | Author | Date |
BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: BOOLOADER | 01/01/70 00:00 | |
RE: | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: 12V Sigs | 01/01/70 00:00 | |
RE: BOOTLOADER | 01/01/70 00:00 | |
RE: BOOTLOADER | 01/01/70 00:00 | |
RE: BOOTLOADER![]() | 01/01/70 00:00 | |
RE: BOOTLOADER | 01/01/70 00:00 |