AdapterConfig.c

    // Set adapter mode (AL=03h is 80x25 16 colors, AL=0x07 is 80x25 mono)
    switch (Adapter) {
        case 0 :    // MDA/Hercules
            ScreenSeg = 0xB000;
            regs.h.ah = 0x00;
            regs.h.al = 0x07;
            intr (0x10, &regs);
            outp(0x03B8, 9);    // Disable blink
            break;

        case 1 :    // CGA
            ScreenSeg = 0xB800;
            regs.h.ah = 0x00;
            regs.h.al = 0x03;
            intr (0x10, &regs);
            outp(0x03D8, 9);    // Disable blink
            break;

        case 2 :    // EGA/VGA+
            ScreenSeg = 0xB800;
            regs.w.ax = 0x0003;
            intr (0x10, &regs);
            regs.h.ah = 0x10;  // disable blink
            regs.w.bx = 0x0000;
            intr (0x10, &regs);
            break;
    }

    //Hide cursor
    regs.h.ah = 0x01;
    regs.h.al = 0x03; // BIOS bug causes some 386s to hang if AL isn't current video mode
    regs.h.ch = 0x20;
    intr (0x10, &regs);