C51: Missing Multiple DPTR support for some ATMEL Devices
Information in this knowledgebase article applies to:
The µVision dialog Options for Target — Target did
not show the option Use multiple DPTR registers for these
The µVision device database contained wrong options for these devices.
You can specify the options for dual data pointer support manually in the dialog Options for Target — C51 — Misc Controls. Please use the right directive for your device. Atmel devices have two different methods to switch the DPTR.
This will be fixed in all C51 versions later than 9.50a. If a project was created with a C51 version 9.50a or before, re-select the device in the Options for Target — Device dialog to apply the new options to your project.
Last Reviewed: Friday, November 7, 2014
of your data.