3 ms·

I definitely don't miss the infinite combinations of DB-9 to DB-25, making sure your TX/RX lines were lined up correctly, baud rate, 8N1 (or whatever), etc. The

I definitely don't miss the infinite combinations of DB-9 to DB-25, making sure your TX/RX lines were lined up correctly, baud rate, 8N1 (or whatever), etc. Then making sure your UART can actually do it all... But is it really fair to compare 80s/90s connectivity to 2020 while skipping over the decades between 2000 and 2020?

h2odragon 5y ago
"Baud rates" woulda been rs232 serial, unless you were getting really advanced in your parallel port fiddling. rs232 is still recognizably in use in surprising places, often on bare header pins, but still there. "fair?" I dunno. the problems recur, the intermediate period had "VGA standards" that flowed over a wide range; and others that exhibited the same problems we see with USB-C here. I'm pretty sure they had similar issues with crap like antenna connectors and tube socket standards back when they were the cutting edge, too.
- Workaccount2 5y ago
  The field I'm in still uses serial a ton. It does what's it's supposed to and it's plenty fast how it is, so no has changed it in decades.
  - kkielhofner 5y ago
    I don't remember all of that RS232 stuff because my memory is that good - I'm reminded every time I deal with anything "embedded" :). I still cross my fingers when flashing - hoping my chosen speeds and params won't brick the device.
    - Sprite_tm 5y ago
      I helped design an USB-to-serial converter thing to directly go into the silicon of one of these chips you can program. It acts like an USB-to-serial converter on the USB side, but on the device side, it 'forgets' the to-serial and simply directly spits out the bytes it receives on USB. It's interesting how many serial-related parameters become no-ops - you can set the baud rate, parity, data bits etc to whatever value you want, the device happily ignores it and everything keeps working anyway. It's the nice part of tight standards, I guess. (But don't ask me about the shenanigans Windows needs to see in the USB descriptor to allow programs to access an otherwise driver-less USB device - yech)
- kkielhofner 5y ago
  I definitely remember the difference but other than the various high speed modes (EPP and EPC, from what I recall) parallel ports worked for their intended purpose. I mentioned RS232 serial because that was a true "cluster f**" with the issues I enumerated and more. VGA was fun too. I remember early Linux documentation materials warning users that the wrong scanline modes for X could fry the hardware. Not sure if that was an actual occurrence but I remember triple checking just to make sure :).
gumby 5y ago
cough that’s DE-9 you’re talking about; the B shell is large and the E shell much smaller.

h2odragon 5y ago

"Baud rates" woulda been rs232 serial, unless you were getting really advanced in your parallel port fiddling. rs232 is still recognizably in use in surprising places, often on bare header pins, but still there. "fair?" I dunno. the problems recur, the intermediate period had "VGA standards" that flowed over a wide range; and others that exhibited the same problems we see with USB-C here. I'm pretty sure they had similar issues with crap like antenna connectors and tube socket standards back when they were the cutting edge, too.

Workaccount2 5y ago
The field I'm in still uses serial a ton. It does what's it's supposed to and it's plenty fast how it is, so no has changed it in decades.
- kkielhofner 5y ago
  I don't remember all of that RS232 stuff because my memory is that good - I'm reminded every time I deal with anything "embedded" :). I still cross my fingers when flashing - hoping my chosen speeds and params won't brick the device.
  - Sprite_tm 5y ago
    I helped design an USB-to-serial converter thing to directly go into the silicon of one of these chips you can program. It acts like an USB-to-serial converter on the USB side, but on the device side, it 'forgets' the to-serial and simply directly spits out the bytes it receives on USB. It's interesting how many serial-related parameters become no-ops - you can set the baud rate, parity, data bits etc to whatever value you want, the device happily ignores it and everything keeps working anyway. It's the nice part of tight standards, I guess. (But don't ask me about the shenanigans Windows needs to see in the USB descriptor to allow programs to access an otherwise driver-less USB device - yech)
kkielhofner 5y ago
I definitely remember the difference but other than the various high speed modes (EPP and EPC, from what I recall) parallel ports worked for their intended purpose. I mentioned RS232 serial because that was a true "cluster f**" with the issues I enumerated and more. VGA was fun too. I remember early Linux documentation materials warning users that the wrong scanline modes for X could fry the hardware. Not sure if that was an actual occurrence but I remember triple checking just to make sure :).

gumby 5y ago

cough that’s DE-9 you’re talking about; the B shell is large and the E shell much smaller.