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tektronix/tek440x.cpp adds timer AM9513 and fix for RTC MC146818#15522

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tektronix/tek440x.cpp adds timer AM9513 and fix for RTC MC146818#15522
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Elektraglide:add-rtc_timer

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@Elektraglide Elektraglide commented Jun 14, 2026

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4404 has some special business logic for resetting IRQ1 by writing to 0x7b8100 to clear a latch

RTC had 32MHz clock not 32kHz

Comment thread src/mame/tektronix/tek440x.cpp Outdated
Comment thread src/mame/tektronix/tek440x.cpp Outdated
@Elektraglide Elektraglide requested a review from MooglyGuy June 16, 2026 14:21
@Elektraglide Elektraglide changed the title tektronix/tek440x.cpp adds timer AM9513 and RTC MC146818 tektronix/tek440x.cpp adds timer AM9513 and fix for RTC MC146818 Jun 18, 2026
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