I am creating a big application using Banking. Compilation goes fine but in debugging mode, some of the routines gives the error message as Access Violation Problem. When access is gives for that memory locations using MAP command, then the execution will start from beginning causes infinite loop. But some of the routines works from when they moved from Bank 0 to CommonCode area. Not sure why some routines are not working either in Bank 0, Bank 1 or in Common code are. Seeking clarification. Thanks Ashok