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Implementation provenance

The initial MSI Claw and ASUS ROG Ally engines are extracted from KillerPixelCrew's MIT-licensed implementations in WSGM at source commit 3b0c1e1c8268268a14c767c2efc07bdc893c3f84. Their native protocols, recovery rules, physical input, motion and haptic behavior are preserved during extraction. The family provenance and authored glyph notices remain with each engine.

Family protocol references and authored glyph attribution remain beside their implementations under src/LibHandheld/Families. Supported devices describes the public catalog. Reference support and compilation are separate from hardware observations on a particular model.

Processor reset follows the same source contracts as the writes in ProfiledProcessorService and AmdSmuTransport.Settings: HC's AMD processor restores a minimum/maximum clock range only for its older min/max command path; its fixed-clock path returns without a restore command. Intel has no GPU clock setting. Zero removes curve/undervolt offsets. Thermal settings use captured originals, with no invented factory temperature. Unrestorable settings explicitly require Windows restart after the consumer clears its saved overrides. These are source contracts, not hardware acceptance of the reset.

Intel register access

Intel package power limits and OC-mailbox voltage offsets use the signed PawnIO IntelMSR module embedded in this library (module source). Power writes send Handheld Companion's whole MSR 0x610 value: PL1 and PL2 enabled and clamped, with its time windows 0x6E and 0x21. The unit comes from MSR 0x606. A register the firmware locked until restart refuses the power transport at start, since no signed path could change the limits. Undervolt values are encoded like HC: either sign lowers the voltage by the magnitude. Handheld Companion's KX helper also writes the MCHBAR power mirror at 0x59A0/0x59A4 and the GPU clock at MCHBAR 0x5994. PawnIO's MCHBAR module is read-only, so the mirror is left as the firmware set it and Intel GPU clock control is not offered. KX and its HwRwDrv driver, which Windows blocks, are no longer used.