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File:IM2 Plus Ack Bug.png: Revision history

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30 July 2017

  • curprev 08:5508:55, 30 July 2017 Gerald talk contribs 256 bytes +256 Red marker is at start of IRQ acknowledge cycle which is immediately seen by the ASIC (INTn goes up) : vector is 0x06 Purple marker is at the effective cycle where the Z80 sample the vector, and where the ASIC sees a second acknowledge. Vector is now 0...
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