DOS ain't dead - MODE command

MODE command (Developers)

posted by RayeR , CZ, 18.10.2021, 21:44

> PDOS/386 uses the BIOS for everything, which gives
> it a benefit that a BIOS vendor can implement the
> serial port on INT 14H as some other device, like
> Bluetooth or Wifi.
>
> My dumb phone (an Alcatel Onetouch) supports Bluetooth
> plus has an internet connection, and it would be great
> if I could boot PDOS/386 on the metal, point my BIOS to
> my phone, and be able to contact a newsgroup. I was
> hoping that SeaBIOS could help with that, but the
> bottleneck is apparently Bluetooth being undocumented.

Oh, a nice dream but only a dream. Any BIOS vendor would not implement a BIOS service for embedded BT/WiFi whatever module. And because it's almost undocumented you couldn't implement the service by yourself. Except if you will design your own OpenHW/FW machine :) Or you have to use some transparent UART-BT module with serial profile attached to your COM port.

Even setting higer baudrates over standard 115200 is problematic as there are different UART controllers (some devices can do up to 1Mb/s) that need to be set by HW specific routine and it may not be possible to autodetect it. In case of additional multiuart PCI card it is possible to scan a specific PCI VID, PID and then know what UART you have and how to setup the speed correctly.

---
DOS gives me freedom to unlimited HW access.

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Complete thread:

MODE command - kerravon, 14.10.2021, 12:34 (Developers)
- MODE command - bretjohn, 14.10.2021, 17:36
  - MODE command - kerravon, 15.10.2021, 00:29
    - MODE command - bretjohn, 15.10.2021, 07:29
      - MODE command - kerravon, 15.10.2021, 07:42
        MODE command - bretjohn, 16.10.2021, 00:50
        MODE command - kerravon, 16.10.2021, 02:07
        MODE command - RayeR, 18.10.2021, 21:44
- MODE command - DosWorld, 22.10.2021, 03:35
  - MODE command - kerravon, 23.10.2021, 01:50
    - MODE command - DosWorld, 01.11.2021, 19:05
      - MODE command - kerravon, 01.11.2021, 20:02
        MODE command - tom, 02.11.2021, 18:53
        MODE command - kerravon, 02.11.2021, 21:22