<div dir="ltr">Bill,<div><br></div><div>I also am in favour of stripping away the USB - it really only makes sense when you want to communicate with a PC and power the board with a fairly stable 5V supply.</div><div><br></div><div>FTDI have produced USB to serial interface devices for about 10 years - and this is very convenient for connecting low resource microcontrollers that perhaps only have a (TTL) UART for serial comms.</div><div><br></div><div>You can now get a USB to serial VCP IC that runs at 3Mbaud and costs less than 50 cents.</div><div><br></div><div>Regarding implementation on an ESP8266:</div><div><br></div><div>Whilst the current ESP8266 is a capable chip (80-160MHz 32 bit) with only 20% of it's MIPS taken up with the WiFi stack, it might not have sufficient RAM available on chip (<36Kbytes) to support a full Oberon application.</div><div><br></div><div>This begs the question about an "Oberon Lite" implementation - which I guess is what Chris Burrows has implemented for various ARM and FPGA platforms.</div><div><br></div><div>There's a new ESP device, the ESP32, currently in beta testing which has about 400Kbytes of RAM</div><div><br></div><div><a href="https://harizanov.com/2015/12/esp32/">https://harizanov.com/2015/12/esp32/</a></div><div><br></div><div><br></div><div>This could make a very attractive platform for an IOT system or pocket WiFi workstation.</div><div><br></div><div>It is only the mass-market applications that will bring Oberon to the forefront - and the idea of a complete lightweight OS that resides in under 1Mbyte - makes it attractive for IoT devices that really do not need to carry around 20 million lines of source-code baggage.</div><div><br></div><div>However to develop these applications, we need Oberon platforms - and NW, Paul Reed (& co) Chris B and Magnus are doing their best to furnish us with usable hardware.</div><div><br></div><div><br></div><div><br></div><div><br></div><div>Ken</div><div><br></div><div><br></div><div>Ken </div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On 16 February 2016 at 12:03, Bill Buzzell <span dir="ltr"><<a href="mailto:captbill279@gmail.com" target="_blank">captbill279@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">"So essentially it's a blackbox abstracted away, out of site, out of mind,<br>
and you don't "learn" about USB? i.e. hiding it under the rug, pretending<br>
it's RS232 when in fact there is a USB blackbox somewhere in there...<br>
<br>
I'm okay with this, just wondering why Wirth is okay with that or Oberon<br>
folk are okay with it. I could also have it completely wrong. i.e. at<br>
some point the USB has to be abstracted away and hidden from site, in<br>
order for oberon to work with usb without knowing much about usb - so in<br>
some sense it is a black box. But how is that any different from a rasp<br>
pi with usb that no one really understands fully. are we just moving goal<br>
posts here and pretending this is an "ethical" usb choice?<br>
<br>
It seems to be the ethics of oberon is that you have to understand all<br>
parts of the system. Can you fully understand the Pepino USB system or is<br>
it just a hardwared blackbox?<br>
<br>
Sorry for my ignorance, I'm still in the research stages of seeing how<br>
Pepino actually works. FPGA's are also quite confusing."<br>
<br></span>
As soon as someone figures out a way to totally be gone with USB that is a GOOD thing and to be considered PROGRESS. Same with the mouse and keyboard. It is ADVANTAGEOUS to be without massive protocols which serve no purpose but to get in the way. This is the type of system where you should AT LEAST be able to read the TTL signals and make your own mouse driver. What is PS-2? Cut the cord, skin the wires and read the bare wires output. This is desirable.<br>
<br>
In fact, I am attempting to establish a more direct TCP-UART bridge using the ESP8266 which will bypass USB completely, and happens over WiFi. There is already headers on the Pepino for the ESP8266. In actuality, the NRF24l01 offers a more 'bare metal network' than the ESP8266 even.<br>
<br>
The FTDI chip serves as the "COM port ---> RS232" communication channel to speak to the FPGA, which is the industry standard way to make a good "plug-and-play" system via USB. It is a most sensible way to go, at least for now but certainly not the only way.<br>
<br>
In fact,you want a $5 'pc'? You learn to program compilers WELL using a ProjectOberon board and simply build a target compiler for the ESP8266, and viola, you will have a SUPERIOR $5 computer that is running Oberon, not Linux.<div class="HOEnZb"><div class="h5"><br>
<br>
<br>
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</div></div></blockquote></div><br></div>