Create a new IRQ line. Updates `notify` when the sender asserts the IRQ.

*****************************************************************************/

call this if you can still continue but want to make the user see what you just printed:

Lock the underlying device

check if number of useconds has passed */

get current usec counter */

this function is to be called before the screen gets cleared so that the user can, in debug mode, confirm to continue by a keypress

wait for LCD with timeout */

Register a device IRQ to a specific index. Returns `&mut self` to support chaining registrations. # Panics Panics if `idx >= 32`

read len bytes from the beginning of s, * calculate checksum, and * if (d) copy to current offset in d */

send LCD command and data */

send LCD data */

Reset internal cursor to start of buffer.

(width, height) crops the framebuffer to the specified screen size (starting from the top-left corner)

* Copies one block of data (512 or 1024 bytes) from the device * to host memory */

* This routine sucks, and would benefit greatly from having * the FAT cached in RAM.. But.. The FAT for a 4GB Nano comes * out to about 4MB, so that

we call this in config.c

send LCD command */

wait for LCD with timeout */

load the boot entry from * boot table at offset, * entry number entry * file fw */

check if number of seconds has past */