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2022-08-16 03:02:27 +02:00
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@@ -2159,12 +2159,9 @@ Z80_API zusize z80_run(Z80 *self, zusize cycles)
| original state of IFF1. |
| |
| Some technical documents from Zilog include an erroneous timing diagram |
| showing an NMI acknowledge cycle of 4 T-states. In particular, "The Z80 |
| Family Program Interrupt Structure" and all versions of "Z80 Family: CPU |
| User Manual". Other documents from Zilog, as well as practically all the |
| existing literature about the Z80 from different manufacturers and third |
| parties, specify that this M-cycle has 5 T-states, as has been confirmed |
| by electronic simulations [1]. |
| showing an NMI acknowledge cycle of 4 T-states. However, documents from |
| other manufacturers and third parties specify that this M-cycle has 5 |
| T-states, as has been confirmed by electronic simulations [1]. |
| |
| References: |
| 1. Checked with "Visual Z80 Remix" |