INT 48 - TI Professional PCIBM PC - DISPLAY SYSTEM ERROR MESSAGE
	AH = 08h
	BX = error number
Return: nothing
Desc:	displays the error message " ** System Error ** - xxxx" where xxxx is
	  the hexadecimal value in BX
SeeAlso: AH=00h,AH=01h,AH=02h,AH=03h,AH=04h,AH=06h,AH=08h,AH=0Ah,AH=0Bh