Tandy 1000 HX Technical Reference Manual page 413

E E R O M (Tandy 1000 HX only)
15 hex (21 dec)
Function Summary
AH = 70H, AL = 0: Read a 16 bit word from EEROM
AH = 70H, AL = 1: Write a 16 bit word to EEROM
Function Descriptions
Read From EEROM
Read the 16 bit value from the indicated EEROM word.
Entry Conditions:
AH = 70H
AL = 0
BL = word number to read (0 -15)
Exit Conditions:
DX = word value
Carry Flag set indicates EEROM call not supported, system is
not a 1000HX
Write To EEROM
Write a 16 bit value to the indicated EEROM word
Entry Conditions:
AH = 70H
AL = 1
BL = word number to write (0-15)
DX = word value to write
Exit Conditions:
Carry Flag set indicates EEROM call not supported, system is
not a 1000HX
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