INT 11 - BIOS - GET EQUIPMENT LIST
Return: AX = BIOS equipment list word
            bits
            0     floppy disk(s) installed (see bits 6-7)
            1     80x87 coprocessor installed
            2,3   number of 16K banks of RAM on motherboard (PC only)
                  number of 64K banks of RAM on motherboard (XT only)
            2     pointing device installed (PS)
            3     unused (PS)
            4-5   initial video mode
                  00 EGA, VGA, or PGA
                  01 40x25 color
                  10 80x25 color
                  11 80x25 monochrome
            6-7   number of floppies installed less 1 (if bit 0 set)
            8     DMA support installed (PCjr, some Tandy 1000s, 1400LT)
            9-11  number of serial ports installed
            12    game port installed
            13    serial printer attached (PCjr)
                  internal modem installed (PC/Convertible)
            14-15 number of parallel ports installed
---Compaq and many other 386/486 machines--
        EAX bit 23: page tables set so that Weitek coprocessor addressable in
                        real mode
            bit 24: Weitek math coprocessor present
---Compaq Systempro
        EAX bit 25: internal DMA parallel port available
                26: IRQ for internal DMA parallel port (if bit 25 set)
                    0 = IRQ5
                    1 = IRQ7
             27,28: parallel port DMA channel
                    00 DMA channel 0
                    01 DMA channel 0 ???
                    10 reserved
                    11 DMA channel 3