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AltairZ80: SCP300F: Add support for MS-DOS 2.00.

* Add support for 8259 interrupt controller.
* Add support for Cromemco and Tarbell Monitor ROMs.
* To allow port 0xFE to be used by the simh_dev.
* Use the CPU's SR instead of a SCP300F-specific one.
* 9513 RTC support.
This commit is contained in:
Howard M. Harte
2022-11-23 20:31:10 -08:00
committed by Mark Pizzolato
parent 3f0db42da2
commit 0f88cc07e1

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