explanations about arrays in the architecture document

	smaragd7 RTOS
	_____________

	a new internal interrupt so socket routines called from
	applications can get the relative adress of the input buffers
	from the kernel vector list

	This address is facutally always C00000 unless startup
	could only find one 4K page to hold both RX and TX buffers

	Then TX buffers keep their guaranteed address of F00000
	(1K words) and RX buffers move to F00400 (3K words)

	So rx_buffers could move from C00000 to F00400 in a
	situation which is desparate

	Otherwise a small system has 48K words RX buffers
	at C00000 and 16K TX buffers at F00000

	and a large system has 3 Megawords RX buffers at C00000
	and 1 Megaword TX buffers at F00000

	Not counting the private space used for high-volume sockets