INT 11h - get BIOS equipment list. INT 11h D15-14 D13 D12 D11-9 D8 D7-6 D5-4 D3 D2 D1 D0 Get BIOS equipment list. No. of // device Res Game port yes/ no No. of serial device Res. No. of FDD-1 Initial vedio mode res PS/2 mouse installed Math uP installed Set if booted from FDD Return Bios list word in AX; details given here for All bits D15-0 from memory 0040:0010h 00 - 1 01 - 2 10 - 3 11 - 4   0 no 1yes 000 001 010 011 100 101 110 111   00 -1 01 -2 10- 3 11-4 00 EGA/ VGA/PGA 01 - 40x25 CGA color 10 - 80x25 CGA color 11 - 80x25 mono txt     1 yes 0 no 1-enabled 2- Diabled INT 12h - Get Memory Size. INT  12h Service no. NIL Returns Description Example Get memory Size. AX = kilobytes of contiguous memory starting at absolute address 00000h, this call returns the contents of the word at 0040h:0013h     INT 16h / AH = 00h - get keystroke from keyboard (no echo). INT 16h Service no. 00h Returns Description Example Get keystroke from keyboard (no echo). AH = BIOS scan code. AL = ASCII