bx_analog_in
#define BX_ANALOG_IN chip->bx_analog_in
chip->px_analog_in = chip->bx_analog_in = 14;
chip->px_analog_in = chip->bx_analog_in = 16;
chip->nominal_level[bx_analog_in(chip) + c];
if (chip->nominal_level[bx_analog_in(chip) + c] !=
set_nominal_level(chip, bx_analog_in(chip) + c,
char bx_digital_out, bx_analog_in, bx_digital_in, bx_num;
return bx_analog_in(chip);
return bx_num(chip) - bx_analog_in(chip);
return bx_digital_in(chip) - bx_analog_in(chip);