page. Note that accessing legacy versions on the official site may require you to enter a valid Product Serial Number (PSN) if you are a registered user. Registration:
| Toolchain | Compatibility Notes | | --- | --- | | | Not binary-compatible. You will need to recompile all source code and potentially rewrite inline assembly. | | Arm Compiler 5 (in MDK 5) | Highly compatible if you compile from source. Flag --c90 and --cpu=7-M help. | | IAR EWARM | Not compatible. Separate licensing and syntax differences. | | Rowley CrossWorks | May import Keil projects but typically requires changes. | keil mdk-arm 4.7 download