Two instances of the IDE code setting the error register did not set it in the cdrom struct if drive is CD-ROM, now they do, fixes CD-ROM booting on the Intel Advanced/ATX and possibly other things;
Fixed IDE and ATAPI 8-bit data reads and writes by rewriting the IDE and CD-ROM PIO data read and write code so that the base code is now 8-bit; Added some compiler directives that if set, will enable togglable logging and log breakpoints; Empty IDE channels now always report a status of 0x10 rather than 0x20, and do it on port 3F6h/376h/36Eh/3EEh too, fixes OAKCDROM.SYS infinite loop when hitting an empty IDE channel.
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