| ??? 01/03/10 01:11 Read: times |
#172144 - Why at 0x0100? Responding to: ???'s previous message |
Avni Modi said:
Hello, Mr.Richard Erlacher i m using LABTOOL-48 Universal Programmer. And Also My program is working before 2000H address but it is different not calling IAP. sample programme is shown below. Surely you realize that if you use a LABTOOL-48 to program your part, it can't be used for IAP. I used a Labtool-48 at one time, and it's a very solid programmer. However, if you need to have #AA at location 0x0100, you can make it part of your program, since that, too, resides in the region below 0x2000. On the other hand, I'd bet the datasheet and user manual for your MCU tells you what you need to do in order to effect IAP. The parts I use don't allow IAP in the region below 0x8000. But now a days we have to read and write data #AAH at address 0100H.
Send me the sujjestion. We are waiting for your reply. Why does it matter that the #AA be located at 0x0100? This one sample program is for only to flicker LED on port P0
ORG 2000H MOV 080H,#0FFH MOV 0A0H,#0FFH stop: MOV 080H,#11111110B MOV 0A0H,#11111110B LCALL DELAY LCALL DELAY MOV 080H,#11111110B MOV 0A0H,#11111101B LCALL DELAY LCALL DELAY SJMP STOP DELAY: MOV R5,#10 LD2: MOV R6,#100 LD1: MOV R7,#100 LD: DJNZ R7,LD DJNZ R6,LD1 DJNZ R5,LD2 RET END |
| Topic | Author | Date |
| P89V51RD2 IAP and ISP writeup | 01/01/70 00:00 | |
| e-mail it to andy ayre | 01/01/70 00:00 | |
| thanks for replay | 01/01/70 00:00 | |
| once again readout data | 01/01/70 00:00 | |
| I'll look at it tomorrow | 01/01/70 00:00 | |
| case sensitive assembler | 01/01/70 00:00 | |
| Read Data....from address | 01/01/70 00:00 | |
| What kind of programmer? | 01/01/70 00:00 | |
| never saw a chip that .. | 01/01/70 00:00 | |
| Maybe not now ... | 01/01/70 00:00 | |
| Before 2000h perfect working | 01/01/70 00:00 | |
| no bootloader | 01/01/70 00:00 | |
| Why at 0x0100? | 01/01/70 00:00 | |
| p89v51rd2bn | 01/01/70 00:00 | |
| Have you told us everything? | 01/01/70 00:00 | |
| using IAP routine | 01/01/70 00:00 | |
| I'd suggest you focus on the datasheet | 01/01/70 00:00 | |
| datasheet | 01/01/70 00:00 | |
| I love these replies | 01/01/70 00:00 | |
| NXP practice | 01/01/70 00:00 | |
| not in this case | 01/01/70 00:00 | |
| Getting Solution | 01/01/70 00:00 | |
| HUH???? | 01/01/70 00:00 | |
good response | 01/01/70 00:00 | |
| have you read my last two posts? | 01/01/70 00:00 |