MEM 0040h:0012h - MCA - MANUFACTURING TEST                                      
Size:	BYTE


Bitfields for MCA manufacturing test flags :
Bit(s)	Description	(Table M0008)
 7	POSTsee Power-On Self-Test flag, ???
 6-5	unused
 4	POSTsee Power-On Self-Test flag, slot 4 has adapter identifier EDAFh
 3	POSTsee Power-On Self-Test flag, 80x25 color video
 2	POSTsee Power-On Self-Test flag, ???
 1	unused
 0	manufacturing test mode rather than normal operation
                                                                                

MEM 0040h:0012h - PS/2IBM PS/2, any model Model 25 - POSTsee Power-On Self-Test SYSTEM FLAG
Size:	BYTE


Bitfields for PS/2IBM PS/2, any model Model 25 POSTsee Power-On Self-Test sytem flag :
Bit(s)	Description	(Table M0009)
 0	optional memory failed; memory remapped
 1	real-time clock installed