# How to install/use the io64 function

**URL:** <https://psychtoolbox.discourse.group/t/how-to-install-use-the-io64-function/4992>\
**Category:** Hardware\
**Tags:** windows, linux, io\
**Created:** [May 15, 2023, 4:19pm UTC](https://psychtoolbox.discourse.group/t/how-to-install-use-the-io64-function/4992 "2023-05-15T16:19:09Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![johannesjuliusm](https://yyz2.discourse-cdn.com/free1/user_avatar/psychtoolbox.discourse.group/johannesjuliusm/32/627_2.png) [@johannesjuliusm](https://psychtoolbox.discourse.group/u/johannesjuliusm)\
**Post date:** [May 20, 2023, 6:51am UTC](https://psychtoolbox.discourse.group/t/how-to-install-use-the-io64-function/4992/9 "2023-05-20T06:51:17Z")

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See also Mario’s helpful answer for best practice of sending TTL markers in this [thread here](https://psychtoolbox.discourse.group/t/best-practice-ttl-event-triggers-in-ptb-stimulus-presentation-loop/4659).

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