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x4prosim: BM8563 offset property to set the clock at runtime - #8
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qom-set /machine/bm8563 offset <seconds from host time> moves the RTC the way an NTP sync would, so a run started with -rtc base=2000-01-01 can check firmware behavior before and after the clock is set without network time. Used to test the CrossDink battery log's clock_set path. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01G44vPUbRgJCwaepYdHhWs7
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Before: the emulated BM8563 clock could only be set at launch (
-rtc base=) or by a guest write, so a run could not move from "clock never set" to "clock set" without NTP, which the sandbox can't reach.After:
qom-set /machine/bm8563 offset <seconds from host time>moves the clock at runtime, like an NTP sync would.How: a uint64 QOM property on the existing
offsetfield (a build check makes suretime_tis 64-bit). The X4PROSIM.md RTC row documents it. Used to test the CrossDink battery log's clock_set path: started at 2000-01-01, set the offset mid-run, and aclock_setrow followed.🤖 Generated with Claude Code
https://claude.ai/code/session_01G44vPUbRgJCwaepYdHhWs7
Generated by Claude Code