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Sort out the IRQ/INT enabling/disabling stuff of the 5380/53c80 chip.#6834

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OBattler merged 1 commit into
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TC1995
Feb 22, 2026
Merged

Sort out the IRQ/INT enabling/disabling stuff of the 5380/53c80 chip.#6834
OBattler merged 1 commit into
masterfrom
TC1995

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@TC1995 TC1995 commented Feb 22, 2026

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Summary

Allowing proper operation of the IRQ in the 53c400 and, at the same time, recognizing the RTASPI10.SYS driver of the Rancho RT1000B. Code based on the 53c400 manual and MAME.
TODO: Verify the Trantor T128 scheme.

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References

NCR 53c400 manual
Relevant NCR 53c400 part of MAME

Allowing proper operation of the IRQ in the 53c400 and, at the same time, recognizing the RTASPI10.SYS driver of the Rancho RT1000B.
Code based on the 53c400 manual and MAME.
TODO: Verify the Trantor T128 scheme.
@OBattler OBattler merged commit ffa6ea6 into master Feb 22, 2026
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2 participants