Sense codes for displays like the 12 inch RGB display (512x384) weren't working since they had the extended part set to 0xff.
Related to issues #25.
Also added some descriptive information and sizes which may be used for UI purposes such as creating a menu of displays to choose from. The sizes may be used to set the default window size for the display.
This commit fixes conflict resolution mistakes in the following commits:
"atimach64gx: Let crtc_update calculate fb_ptr."
"atimach64gx: Redraw only when necessary."
"atimach64gx: Log unhandled overlay registers." was mistakenly included in "atimach64gx: Let crtc_update calculate fb_ptr.". The OVR_ registers were included because they may be needed for 2D acceleration in System 7.5.3 and later.
Init them to defaults.
Make CONFIG_CNTL 8 bytes so unaligned read/write is easier.
Write changes to CONFIG_CNTL even if offset + size is > 4.
Log aperture change only if first byte (LSB) of CONFIG_CNTL is written. The driver might only write to the 2 most significant bytes which won't affect aperture size.
Offset and size are applied to the destination, not to source value, so we shouldn't use extract_bits when logging value.
Use ATI bitfield enums in switch statement.
The first packet the one sec mode should send is a mode 1 real time packet, same as GET_REAL_TIME.
A mode 2 packet is the same but doesn't include the time.
They are incomplete or unused (includes cmd and count but not the data and the count isn't used). Might as well get everything from the class fields in_buf and in_count.
GET_REAL_TIME was using the wrong offset and wasn't setting out_count.
May need to add time zone offset which could be different between host and guest.
get-time and set-time can be tested in Open Firmware.
SET_REAL_TIME is used by the Date/Time Control Panel when you change the date.
It is unknown what method Mac OS uses to get the time at boot. Mac OS 8.6 does not use GET_REAL_TIME during boot, so the time is left as 12:00 AM Jan 1, 1904.
