PORTIBM PC Portable (uses same BIOS as XT) AEE8-AEEB - 8514/A and compatible - READ MASK
Desc:	specify which bit planes are used as a data source
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) AAE8h,PORTIBM PC Portable (uses same BIOS as XT) B2E8h

AEE8w -W  drawing control: read mask
AEE8d RW  (S3) drawing control: read mask for 32bpp modes