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[IOU] At power-on, POC and RESET_N are not valid. #1

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frozen-signal opened this issue Jul 11, 2023 · 1 comment
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[IOU] At power-on, POC and RESET_N are not valid. #1

frozen-signal opened this issue Jul 11, 2023 · 1 comment
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bug Something isn't working IOU Related to the Apple IIe's IOU (344-0020)

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@frozen-signal
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At power-on, POC remains HIGH and RESET_N goes immediately High-Z.
Expected behaviour is:

  • POC should remain HIGH for ~2.4 ms, then driven LOW.
  • RESET_N should be LOW while POC is HIGH, remain LOW until the video scanner overflows (TC=1), then driven High-Z on the next PHI_1.
@frozen-signal frozen-signal added bug Something isn't working IOU Related to the Apple IIe's IOU (344-0020) labels Jul 11, 2023
@frozen-signal
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Fixed by #2

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Labels
bug Something isn't working IOU Related to the Apple IIe's IOU (344-0020)
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