Hallo Spiro, > Correct me if I'm wrong, but I think this is not true for a 8259A in > 8086-mode (while it is for a 8259 or a 8259A in 8080-mode). Page 2-263 of Intel's "Microprocessor and peripheral handbook-volume 1" and others mention two INTA-pulses. This page says that the vector is released during the second pulse, the first one only sets/resets some bits. Groetjes, Ruud http://Ruud.C64.org/ - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail email@example.com.
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