10CB00 INT 10 - UNCHAIN - SAVE CURRENT VGA REGISTERS
10CB01 INT 10 - UNCHAIN - UPDATE PAGE 1 OFFSET
10CB02 INT 10 - UNCHAIN - UPDATE PAGE 2 OFFSET
10CB03 INT 10 - UNCHAIN - UPDATE PAGE 3 OFFSET
10CB04 INT 10 - UNCHAIN - UPDATE PAGE 4 OFFSET
10CB05 INT 10 - UNCHAIN - SAVE PALETTE
10CB06 INT 10 - UNCHAIN - RESTORE VGA REGISTERS
10CBFF INT 10 - UNCHAIN - INSTALLATION CHECK