Implement the probe procedure for ACA500. Now the user just needs acafh0
compiled in his kernel and it all should(tm) work.

Due to lack of obio in amiga port, the probe is called directly from mbatt

Implement the probe procedure for ACA500. Now the user just needs acafh0
compiled in his kernel and it all should(tm) work.

Due to lack of obio in amiga port, the probe is called directly from mbattach().
This is going to change with the introduction of obio for all non-autoconfig
expansions.

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Changes to ACA500 support:
- Add support for second (aux) CF slot.
- Rework wdc attachment to be more sane.
- Add support for clockport on ACA500.
- Fix style where appropriate.

Add preliminary support for the Individual Computers ACA500 in the form of acahf
driver. If ACA500 is equipped with supported accelerator with MMU, it allows
running NetBSD on an Amiga 500.

Since AC

Add preliminary support for the Individual Computers ACA500 in the form of acahf
driver. If ACA500 is equipped with supported accelerator with MMU, it allows
running NetBSD on an Amiga 500.

Since ACA is not autoconf-aware, and the probe procedure does not exist yet, the
driver is activated with the ACA500_SUPPORT kernel option. The acahf driver
is commented out in the GENERIC kernel for now (at least until it stops being
very experimental and hackish).

When it comes to ACA-specific hardware, for now the boot CF slot works. Support for everything else is incoming...

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