How is that possible?

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By erpirao

Paragon (1125)

erpirao's picture

06-12-2020, 13:13

new answer in the video.

All CPU instructions are executed on Z80 20MHz except range of EDC0 ~ EDFF.
These instructions (EDC0 ~ EDFF) are a sort of multiplication & division including R800's multiplication.
They are executed on Z280. And switching CPU is done by H/W like a co-processor, so new S/W can use these extra instructions easily.

By erpirao

Paragon (1125)

erpirao's picture

25-12-2020, 20:14

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