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ISD51 User's Guide
Introduction 
What's New Features Requirements Restrictions Benefits Availability 
Theory of Operation Program Integration Function ReferenceRestrictions
- By default, within the µVision IDE, you may only write to certain SFRs (ACC, B, DPH, DPL, P0, P3, PSW, and SP). If you write to other SFRs you must add write functions into the ISD51.A51 file.
- Extended 8051 instruction sets are not supported. ISD51 cannot be used with the Philips 80C51MX or the Dallas 390/3240/400 Devices.
- Code banking is not supported. ISD51 cannot be used with code banking programs.
- PDATA variables cannot be reviewed.
- Breakpoints and single-stepping do not work in interrupt service routines unless hardware breakpoints or Flash breakpoints are used.
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