Programming a DOS Twitch Bot: Part 2
In this video I spend 3.5 hours digging through Linux and DOSBox trying figure out how to connect a virtual serial port to DOSBox. Confusion ensues.
This video is intended to be family friendly.
Streamed on 2019-05-29.
See more at / jookia2
Music Albums:
The Fish Who Saved the Planet - The Fish Who Saved the Planet
https://thefishwhosavedtheplanet.band...
Copyright Nov 25 2015
Licensed CC-BY 3.0
Above the Treeline - The Fish Who Saved the Planet
https://thefishwhosavedtheplanet.band...
Copyright Nov 24 2017 Olle Murhed, Gustaf Ferntoft, Joel Berglez, Alice Eliasson
Licensed CC-BY 3.0
virgo indigo - Fog Lake
https://foglake.bandcamp.com/album/vi...
Copyright Feb 2014 Warren Hildebrand, Daniel Diasgranados, Aaron Powell
License CC-BY 3.0
All original content in the video is licensed CC0 by me.
Timestamps:
00:00:00 - Introduction and networking explanation
00:07:50 - DOSBox networking overview
00:10:25 - Researching a DOSBox and Linux PTY serial port interaction
00:41:27 - Writing a DOS program to test reading from the serial port
01:05:30 - Debugging the DOS program, discussing Windows APIs a little
01:23:35 - Debugging DOSBox to see why it skips characters
01:37:45 - Getting confused why DOSBox isn't dropping 0xff bytes
01:48:00 - stracing DOSBox to become more confused about reading 0xff bytes
01:51:45 - Trying to replicate DOSBox's odd behaviour in another program
02:01:10 - Trying DOSBox's nullmodem instead
02:12:15 - Debugging why TERMINAL works but my program doesn't, programming discussion
02:33:00 - Digging in to TERMINAL's source code
02:41:10 - Testing if my program is polling and missing data
02:48:45 - Trying to use INT 14 for serial programming
03:06:22 - Looking for INT 14 examples, finding out hard truths about DOS APIs
03:08:30 - Getting a serial cable and plugging it in (nothing useful happens on screen)
03:21:43 - Connecting the serial cable to DOSBox
03:29:00 - Giving up for the night
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