Post by thread:[PIC]: MPLINK memory error

I am working on a project that has two object files that I need to link. When I try MPLINK gives me an error: section '.org_0' can not fit the absolute section. Section '.org_0' start = 0x00000004, length = 0x000000e6. The code is for the 16F628. so there are no pages. I know that the code is much smaller than the 2K memory available on the 16F628. This is my first project that uses MPLINK so its probably something simple. Thanks! -- http://www.piclist.com hint: To leave the PICList spam_OUTpiclist-unsubscribe-requestTakeThisOuTmitvma.mit.edu

> I still am having trouble! I removed all of the > PROTECTED attributes from > the program memory section of the Linker Script File. I don't > know what else > to do. Help! There are only 4 addresses between your reset vector and your interrupt vector. Your code won't fit there. There is just enough room for you to insert a GOTO statement. Then, before starting your made code section, be sure to insert another CODE directive so that the assembler inserts your code in the correct block (i.e., not in the interrupt location) When using MPLINK, use CODE instead of ORG Try something like this: RESET_VEC CODE 0x000000 GOTO START INT_VEC CODE 0x000004 GOTO ISR CODE ;make sure you put this in! START ;your code here Hope this helps! Jen -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

Thanks for the response. This is how the code looks now: reset code 0x00000 goto start isr code 0x000004 . . retfie prog code start . . goto main end When I build MPLINK gives me the error: section 'isr' can not fit the absolute section. Section 'isr' start = 0x00000004 length = 0x00000012. I don't understand this because the 'prog' section is relocatable. Any help would be greatly appreciated. Thanks! {Original Message removed}

Try this isr code 0x000004 goto isr_handler ;create a separate label for isr prog code ;then continue as usual . . isr_handler ;place isr_handler with program code Again, the ISR section will not fit within the allocated code block. Enter a goto instruction, and put isr_handler in the program code section. > isr code 0x000004 > . > . > retfie > section 'isr' can not fit the absolute section. > Section 'isr' start = > 0x00000004 length = 0x00000012. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

> reset code 0x00000 > goto start > isr code 0x000004 > . > . > retfie > > prog code > start > . > . > goto main > end I didn't see the beginning of this thread (was on vacation), but that looks fine to me. > When I build MPLINK gives me the error: > > section 'isr' can not fit the absolute section. Section 'isr' start = > 0x00000004 length = 0x00000012. > > I don't understand this because the 'prog' section is relocatable. Any help > would be greatly appreciated. Thanks! This looks like a problem with the linker control file. Here is the linker control file I use for the 16F628: // Linker control file for the PIC 16F628 processor. // CODEPAGE NAME=config START=0x2007 END=0x2007 //special processor config word CODEPAGE NAME=code0 START=0 END=0x7FF //code page 0 DATABANK NAME=bank0 START=0x20 END=0x6F //register bank 0 DATABANK NAME=bank1 START=0xA0 END=0xEF //register bank 1 DATABANK NAME=bank2 START=0x120 END=0x14F //register bank 2 SHAREBANK NAME=globalram START=0x70 END=0x7F PROTECTED //global regs, bank 0 SHAREBANK NAME=globalram START=0xF0 END=0xFF PROTECTED //global regs, bank 1 SHAREBANK NAME=globalram START=0x170 END=0x17F PROTECTED //global regs, bank 2 SECTION NAME=.udata_shr RAM=globalram //global memory mapped to all pages SECTION NAME=.BANK0 RAM=bank0 //for registers explicitly in bank 0 SECTION NAME=.BANK1 RAM=bank1 //for registers explicitly in bank 1 SECTION NAME=.BANK2 RAM=bank2 //for registers explicitly in bank 2 ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads