INT 60 - HP 95LX System Manager - READ FROM FILE

	DI = 0504h
	STACK:	2 WORDs unused dummies (for calls from high level languages)
		DWORD	pointer to file state record (see #03287)
		DWORD	pointer to data buffer
		WORD	number of bytes to read
		DWORD	pointer to WORD in which to return actual bytes read
Return: ???
	STACK unchanged
SeeAlso: INT 60/DI=0505h