i186: fix dma on timer2 and timer2 as prescaler #12223
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For the driver I'm currently writing there were two issues with the i186 emulation:
It would be good if someone familiar with the implementation would review this as I just did the changes to make it work for me - especially the pre-scaler commit.
https://github.com/orgs/mamedev/discussions/99
My WIP driver for testing can be found here hjanetzek#2