ptcd(4) - NetBSD Manual Pages

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PTCD(4)                 NetBSD Kernel Interfaces Manual                PTCD(4)

ptcd -- support for the Protech PS3100 cash drawer port
ptcd* at isa? port 0x48d gpio* at ptcd?
The ptcd driver controls the cash drawer port of the Protech PS3100 point of sale terminal using the GPIO subsystem. ptcd provides a GPIO device with two 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. To open the cash drawer, set pin 0 to logical 1 for a short period of time (e.g. < 1 sec) and then reset the pin to logical 0.
gpio(4), ibmcd(4), gpioctl(8)
The ptcd driver first appeared in NetBSD 6.1.
The ptcd driver was written by Marc Balmer <>.
As it is not possible to detect the hardware at runtime, this driver, when enabled, will always attach. Only enable it in your kernel configu- ration if you have the proper hardware. NetBSD 10.99 December 17, 2012 NetBSD 10.99
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