Re: insw broken for SH4?

[Paul M. <le...@li...>]

On Sat, Nov 10, 2007 at 02:41:15PM +0000, Adrian McMenamin wrote:
> I am investigating this further, but what seems like a perfectly good
> command:
> 
> insw(GDROM_DATA_REG, &sense, 10);
> 
> Where GDROM_DATA_REG is 0xA5F7080, sense is an array of 5 shorts, is
> oopsing after what looks like an odd translation of the port address -
> anybody know more or do I need to parch? (Or have I got this all wrong).
> 
That's your problem, insw goes through ioport_map(), which in the generic
path wraps to the generic_io_base, which the Dreamcast sets to P2.

The bogus address you're hitting is a result of the address wrapping
around. So I suggest you change your DATA_REG to 0x05f7080 and see how
that goes.