PORTIBM PC Portable (uses same BIOS as XT) 02C6-02C9 - VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers./MCGAMulti-Color Graphics Array(Multi-Color Graphics Array) The low-end color adapter offered in IBMInternational Busiuness Machines's early PS/2IBM PS/2, any model series machines. - DAC(Digital-to-Analog Converter) A hardware device (in its simplest form, nothing more than a set of interconnected resistors) which converts a digital number into an analog signal whose voltage is proportional to the value of the digital number.  VGAVideo Graphics Array and later color video boards use DACs to convert color values into the analog signals sent to the display; sound boards normally use DACs as well. REGISTERS (alternate address)
Range:	PORTIBM PC Portable (uses same BIOS as XT) 03C6h or PORTIBM PC Portable (uses same BIOS as XT) 02C6h (alternate)
SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 03C6h