|ARM Technical Support Knowledge Articles|
Applies to: C51 C Compiler
Information in this knowledgebase article applies to:
The uVision dialog Options for Target Target did
not show the option Use multiple DPTR registers for these
AT89S4D12, AT87F51RC, AT89C51RC, AT89S51, AT89LS51, AT89S52, AT89LS52, AT89C55WD, AT87F55WD
The uVision 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.
Request the files attached to this knowledgebase article.
Article last edited on: 2012-08-20 08:16:42
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