Replacement PCB Replicates Early 80s Modem

This page summarizes the projects mentioned and recommended in the original post on news.ycombinator.com

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  • theoldnet-wifi-firmware-binaries

    Firmware, drivers and software for using The Old Net RS232 Serial to WIFI adapter in Modem and Ethernet Mode

  • Related - there's also ESP8266 based TheOldNet wifi modem[1] in case you want TCP/IP over wifi networking in your MS-DOS machine (or possibly others which have support for SLIP - Serial Line Internet Protocol).

    [1]: https://github.com/TheOldNet/theoldnet-wifi-firmware-binarie...

  • Related - there's also ESP8266 based TheOldNet wifi modem[1] in case you want TCP/IP over wifi networking in your MS-DOS machine (or possibly others which have support for SLIP - Serial Line Internet Protocol).

    [1]: https://github.com/TheOldNet/theoldnet-wifi-firmware-binarie...

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  • cs-www-users-fisher

    Source code previously available at https://www-users.cs.york.ac.uk/~fisher/

  • This will get you started:

    Tony Fisher wrote V.32 soft modem stack for SGI Indy back in 1996. York University couldnt handle hosting whole 8 megabytes of his stuff https://www.cs.york.ac.uk/news/fisher/home-page but at least they had the decency to upload it to github instead of just deleting https://github.com/university-of-york/cs-www-users-fisher/tr... Randy Rossi rewrote this project and got working V.21/23 https://github.com/randyrossi/fisher-modem

    Fabrice Bellard, because of course he did :), implemented his own version all the way to V.34 with parts of V.90 https://bellard.org/linmodem/

    V.21 modem implemented in Gnu Radio https://web.archive.org/web/20170627151353/http://aaronscher...

    amodem - good source of ready made modulation implementations https://github.com/romanz/amodem

    minimodem- simple radio link FSK modem https://github.com/kamalmostafa/minimodem

    audsl - leased line project, not compatible with standard modems https://www.araneus.fi/audsl/ but might give some ideas.

  • fisher-modem

    A rewrite of Dr. Tony Fisher's software modem for Linux.

  • This will get you started:

    Tony Fisher wrote V.32 soft modem stack for SGI Indy back in 1996. York University couldnt handle hosting whole 8 megabytes of his stuff https://www.cs.york.ac.uk/news/fisher/home-page but at least they had the decency to upload it to github instead of just deleting https://github.com/university-of-york/cs-www-users-fisher/tr... Randy Rossi rewrote this project and got working V.21/23 https://github.com/randyrossi/fisher-modem

    Fabrice Bellard, because of course he did :), implemented his own version all the way to V.34 with parts of V.90 https://bellard.org/linmodem/

    V.21 modem implemented in Gnu Radio https://web.archive.org/web/20170627151353/http://aaronscher...

    amodem - good source of ready made modulation implementations https://github.com/romanz/amodem

    minimodem- simple radio link FSK modem https://github.com/kamalmostafa/minimodem

    audsl - leased line project, not compatible with standard modems https://www.araneus.fi/audsl/ but might give some ideas.

  • amodem

    Audio MODEM Communication Library in Python

  • This will get you started:

    Tony Fisher wrote V.32 soft modem stack for SGI Indy back in 1996. York University couldnt handle hosting whole 8 megabytes of his stuff https://www.cs.york.ac.uk/news/fisher/home-page but at least they had the decency to upload it to github instead of just deleting https://github.com/university-of-york/cs-www-users-fisher/tr... Randy Rossi rewrote this project and got working V.21/23 https://github.com/randyrossi/fisher-modem

    Fabrice Bellard, because of course he did :), implemented his own version all the way to V.34 with parts of V.90 https://bellard.org/linmodem/

    V.21 modem implemented in Gnu Radio https://web.archive.org/web/20170627151353/http://aaronscher...

    amodem - good source of ready made modulation implementations https://github.com/romanz/amodem

    minimodem- simple radio link FSK modem https://github.com/kamalmostafa/minimodem

    audsl - leased line project, not compatible with standard modems https://www.araneus.fi/audsl/ but might give some ideas.

  • minimodem

    general-purpose software audio FSK modem

  • This will get you started:

    Tony Fisher wrote V.32 soft modem stack for SGI Indy back in 1996. York University couldnt handle hosting whole 8 megabytes of his stuff https://www.cs.york.ac.uk/news/fisher/home-page but at least they had the decency to upload it to github instead of just deleting https://github.com/university-of-york/cs-www-users-fisher/tr... Randy Rossi rewrote this project and got working V.21/23 https://github.com/randyrossi/fisher-modem

    Fabrice Bellard, because of course he did :), implemented his own version all the way to V.34 with parts of V.90 https://bellard.org/linmodem/

    V.21 modem implemented in Gnu Radio https://web.archive.org/web/20170627151353/http://aaronscher...

    amodem - good source of ready made modulation implementations https://github.com/romanz/amodem

    minimodem- simple radio link FSK modem https://github.com/kamalmostafa/minimodem

    audsl - leased line project, not compatible with standard modems https://www.araneus.fi/audsl/ but might give some ideas.

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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