UIC firmware RE notes

kind of a general dump for anything pertaining to the UIC firmware

RAM

address	desc.
01a5	FIFO for ??
01ab	FIFO for ??
01b1	FIFO for general commands
01b7	copy of EEPROM config data (1100 and up)

general commands are sent through the FIFO at 01b1, to be executed in the main loop

(these are internal commands, no relation to the SPI command sets)

command	xrefs	desc.
0	d904 d91e	nop
1	d95b	backlight on
2	d967	backlight off
3	eba0	commit config writes to EEPROM
5	d8dd	enter firmware upload mode
6	d913 f664	set UIC state
7	d452	??
8	d465	??