PORTIBM PC Portable (uses same BIOS as XT) A2E8-A2EB - 8514/A and compatible - BACKGROUND COLOR
Notes:	supported by ATI Mach8 and Mach32 chipsets
	supported by S3 chipsets when PORTIBM PC Portable (uses same BIOS as XT) 03D4h register 40h bit 0 is set
SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) A6E8h

A2E8w -W  drawing control: background color
A2E8d RW  (S3) drawing control: 32bpp background color