Some QL info in usbBible.txt

Some info about the quicklogic compact-flash:

Registers are at 0x02000000 and are 16-bit:
CF Status register is at offset 0x00
CF Config1 register is at offset 0x04
CF Config2 register is at offset 0x08

CF Status register bits:
bit 4 is the Card detect
bit 2 is the Status Change
bit 1 is the IREQ

CF Config1 register bits:
bit 13 is the Reset
bit 12 is the Power
bit 2 is the Status Change Mask
bit 1 is the IREQ Mask
bit 0 is the DFI Mask (This bit shoud be turned on during initialization)

CF Config2 register:
bits 15:0 Cycle Count (set to 0xFFF in Windows Mobile)

I/O Window is at 0x02800000 with a size of 0x00800000
Memory Window 0 is at 0x03000000 with a size of 0x00800000
Memory Window 1 is at 0x03800000 with a size of 0x00800000

The QL chip must be accessed using VLIO mode because it uses the Ready signal (GPIO 2 Alternate Function 1) to insert wait states.

The QL chip uses GPIO 1 to generate interrupts to the PXA.

The QL chip is accessed using Chip Select 2 (GPIO 3 Alternate Function 1).

PXA signals are also used for card detect:
GPIO 101 is CD1
GPIO 70 is CD2