The  character set has numerous codes for 8_128 under Mazovia encoding, which is utilized under DOS based on OEM-US.
Mazovia encoding is used under DOS to represent Polish texts. OEM-US a
00E4 A (lower case a) is a character that represents either a letter from several extended Latin alphabets, or the letter A with an umlaut mark or diaeresis. a
00E0 a
0105 Code page 667 / 790 a
00E2 
