Int 15 Fn 4604 - Compaq Contura 486 And "alladin" 08/05/93 ROMS - Get ?? [b] AX = 4604h Return: CF clear if successful AL = byte read from I/O port 03F8h CF set on error (not supported) AH = 86h (unsupported function) Note: also supported by 7/26/93 LTE Lite 386 ROM