Int 15 Fn 7001 - Tandy 1000sl/tl - Write To Eeprom [x]
AX = 7001h
BL = number of word to read (00h-3Fh)
DX = new value for EEPROM word
Return: CF clear if function supported
Note: the EEPROMs are normally written only by the system setup program;
changing the values can badly mess up a Tandy
See Also: AX=7000h