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