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  Description:  Get Equipment Configuration      [PC] [AT] [PS/2]
 
  Obtains the equipment list code word from the ROM BIOS.
 
  Input              Output
  ═══════            ══════════════════════════════════════════════════════
  Nothing            AX=equipment list code word
                     Bit(s)          Significance
                     ══════          ══════════════════════════════════════
                     14-15           number of printers installed
                     13              =1 if internal modem installed
                                      (PC and XT only)
                                     =1 if serial printer attached (PCjr)
                     12              =1 if game adapter installed
                     9-11            number of RS-232 ports installed
                     8               reserved
                     6-7             number of floppy disk drives
                                      (if bit 0 =1)
                                     00=1
                                     01=2
                                     10=3
                                     11=4
                     4-5             initial video mode
                                     00  reserved
                                     01  40-by-25 color text
                                     10  80-by-25 color text
                                     11  80-by-25 monochrome
                     2-3             system board RAM size (PC, see Note)
                                     00=16 KB
                                     01=32 KB
                                     10=48 KB
                                     11=64 KB
                     2               =1 if pointing device installed (PS/2)
                     1               =1 if math coprocessor installed
                     0               =1 if floppy disk drive(s) installed
                                    -♦-