Corrected DSRTC and BQRTC drivers to properly restore the value of the NVRAM byte used for presence detection.
Thanks and credit to @MartinGieseCelonis for finding this.
- Rearranged HBIOS code to improve colocation of related code.
- Implemented macros to improve control over assembly diagnostic output.
- Improved handling of diagnostic LEDs.
- Improved application boot bank management.
- Implemented application boot for Z280 systems.
- Moved Z280_BNKSEL into proxy.
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