| IBMCD(4) | Device Drivers Manual | IBMCD(4) | 
ibmcd —
ibmcd* at at pci ? dev ? function ?
gpio* at ibmcd?
ibmcd driver controls the cash drawer port of the
  IBM 4810 BSP PCI device found in IBM point of sale terminals (e.g. in the
  SurePOS 300 series) using the GPIO subsystem.
ibmcd provides a GPIO device with three
    pins: pin 0 is used to control the cash drawer while pin 1 can be used to
    read the current state of the sense input pin. A logical 0 means the cash
    drawer is closed, a logical 1 means the cash drawer is open.
Pin 2 reports if a cash drawer is connected. A logical 0 means there is no cash drawer connected, a logical 1 means the cash drawer is connected.
To open the cash drawer, set pin 0 to logical 1. There is no need to reset pin 0 to logical 0 afterwards as the device generates a oneshot impulse.
ibmcd driver first appeared in
  NetBSD 6.1.
ibmcd driver was written by Marc
  Balmer
  <marc@msys.ch>.
| December 17, 2012 | NetBSD 10.0 |