Revision history of "File:IM2 Plus Ack Bug.png"

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  • (cur | prev) 04:55, 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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