XMODEM Protocol Explained

[@BobBeatski71]

Just implemented a cut-down version of Xmodem on my 65816 machine (by Mike Billington) and your explanation was the completing piece. 👍

[@MoonHowler340]

I came across this video while unbricking our cisco switch that only supports xmodem file transfer from Rommon mode (like a safe mode)

[@radman999]

Fantastic video.. chronically underviewed!

[@tahersadeghi6773]

Excellent video. Thank you.

[@temporarilyoffline]

Awesome, looking forward to Zmodem

[@temporarilyoffline]

Oh that protocol analyzer! Sweet move mate!

[@docholliday3150]

Where did you go?

[@nathanbyrd873]

Fantastic explanation, thanks! Also nice shout out to Tandy with the CoCo and Tandy 1000. I remember xmodem as well, as well as upgrading to szmodem eventually and playing games while files transferred. :) It's also interesting that xmodem is still useful today, with some terminal programs like "Secure CRT" supporting it as a convenience to upload and download files in place without opening up a separate SCP connection.

[@RetroLogicLaboratory]

Glad you enjoyed it. Actually its funny you mention this.... the inspiration for doing the XMODEM vid was originated based on how I copy files from my Linux box to the Coco which is pretty similar except the transport (pure RS-232 instead of telnet/ssh) is different.

[@X-OR_]

I like the cut of your jib Retro Logic Lab, Im a new subscriber !

[@emulateiam]

high quality video!

[@RetroLogicLaboratory]

Hey, thanks for the nice comment. It made my day!

[@ahmedalkabir543]

keep it up bro, although I'm younger for this old stuff but I like it.

[@slowneutron6163]

Mikey Term and it's magical multicolor border on the COCO! I remember it well. BBSing rules.

[@punditgi]

Thanks for this informative video! 😊

[@Jenny_Digital]

What I nice simple protocol. I shall implement it into my ToE home-brew computer's ROM. Q: I've not seen any new content in a while, are we going to see any more soon?

[@british.columbia]

Try implementing zmodem, it allows for resume.

[@MoonHowler340]

I have to use xmodem, because the coworker bricked the cisco switch 2960 we use. Booemer protocol painfully slow

thank you!

[@rmccombs66]

By the time I got in to BBses Xmodem wouldn't be used if you knew better except on rare occasions where it was the only option available. Usually Zmodem would be used, Maybe on a few BBSes Zmodem might not be available and I would use Ymodem.

[@nneeerrrd]

What's the reason for re-upload? All comments gone

[@RetroLogicLaboratory]

Sorry, and thanks for the comments on the previous upload! Unfortunately I realized I had included a picture on the original vid that might have caused licensing issues so I reluctantly had to edit and re-upload.

[@giacomo1191]

Oh ok, i thought that i have forgotten to push the like button, mystery fixed