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Richard Erlacher
03/16/10 02:56
Read: 136 times
Denver, Co
USA


 		 #174184 - Thta's what you say ...
Responding to: Andy Peters's previous message
Andy Peters said:
Richard Erlacher said:
The PC once was a viable platform for general development, both hardware and software. Goodness knows, I've used 'em plenty of times. Today, however, the PC is, at most, a platform for development of Windows software. PC's I've recently purchased have had, in one case, only two PCI connectors.


Two issues here:

a) You haven't looked hard enough. You might need to look into industrial computing platforms instead of off-the-shelf Dell machines which are more suited to standard office use. (Most non-engineers don't care about how many slots are inside a computer.)

b) For those that need expansion slots, PCI Express has really taken over. Better bandwidth, better signal integrity than old parallel PCI, and the best thing: software compatible (the software doesn't know that a card is in a PCIe or PCI slot).

Not even LINUX can figure out what the display adapter is.


That's not really a Linux problem. Rather, unless the manufacturer of the graphics card provides a driver, then you can't use the card at anything other than as a standard VGA device. And convincing hardware vendors to provide driver support for non-Windows operating systems has always been a problem.

Now, what do you consider to be a UART? Surely not the ones that were once used in PC's? Philips once made a pretty nice 24-pin skinny-dip part that was a UART with built-in baud rate generator. I miss it!


Maybe if more people were continuing to use it, instead of newer/better/faster devices, then it would still be in production.

The weak-kneed things built into 805x's cover many slow app's, and, in some cases, are even capable of considerable speed in isochronous mode, but can't manage synchronous protocol. The ones, e.g. the SiLabs parts, capable of considerable async rates, are capable of quasi-synchronous transmission/reception, but not in the standard way. After all, the Mode0 "UART" isn't a USRT.


Then use an FPGA and design EXACTLY what YOU want.

Consider what that costs, Andy!

I dunno, it seems as if there's a ton of devices that communicate over SPI, which is a synchronous protocol and in many cases goes pretty damn fast.

Really? So where would you find an SPI USRT that can process HDLC?

Please show us where we can get printers that will work with 805x's and at what price they're available.


I've never had a need to print from my microcontroller, so I can't help you there.

It's a good thing the guys who designed those ticket printers you see at the theaters were able to do it. The ones I last saw used 805x and a few support chips.

I don't care what the PC's do. I want to know what can be done to make it, once again, into a useful tool for development.


As I've noted in this thread, the PC IS a very useful development tool.

You've stated your case, but haven't provided any supporting facts.

-a


I'm surely glad I still have running DOS-based PC's. They work as PC's once did, and there's really nothing that can take their place.

RE


List of 83 messages in thread
TopicAuthorDate
ready made board with 2 UARTs equipped ..      Erik Malund      01/27/10 09:00      
   Send me details      Joseph Hebert      01/27/10 19:27      
   SiLabs kit      Andy Neil      01/28/10 01:33      
      they don't, but      Erik Malund      01/28/10 04:50      
   Can you give more details ?      Kiran V. Sutar      01/28/10 04:17      
      if it was to be made, I need no assistance since ...      Erik Malund      01/28/10 04:46      
         ...and I thought Price was the issue...      Kiran V. Sutar      01/29/10 09:50      
   One Suggestion      Mahesh Joshi      02/03/10 08:05      
      the MX chips are being phased out      Erik Malund      02/03/10 08:27      
   I sent you email      Grant Beattie      02/03/10 15:46      
      read, answered, thanks      Erik Malund      02/03/10 18:25      
   you can use sm5964      Michael Ma      02/11/10 01:18      
      the idea was stated as...      Erik Malund      02/12/10 07:57      
         It is a suggestion      Michael Ma      02/27/10 22:09      
            Not a good idea      Andy Neil      02/28/10 01:11      
            that it is      Erik Malund      02/28/10 08:09      
   How about Phycore?      AP Charles      02/12/10 08:39      
      Legacy Product      Andy Neil      02/12/10 09:08      
         oh, yes      Erik Malund      02/12/10 09:42      
            Have a look at grifo      AP Charles      02/12/10 09:57      
   This looks good too      AP Charles      02/12/10 08:49      
   I've been wondering ...      Richard Erlacher      02/28/10 01:16      
      Likewise      Andy Neil      02/28/10 02:34      
         Maybe, but who makes 'em?      Richard Erlacher      02/28/10 09:38      
            8052 with only 1 UART      Andy Neil      02/28/10 11:15      
               I'm surprised, but that's the case!      Richard Erlacher      03/01/10 01:08      
                  why surprised?      Erik Malund      03/01/10 07:35      
                     That's what I thought      Andy Neil      03/01/10 07:49      
                     I never thought of it in those terms ...      Richard Erlacher      03/01/10 08:20      
                        comments      Erik Malund      03/01/10 08:47      
                           It could be done with two wires and 2-UART MCU      Richard Erlacher      03/01/10 12:41      
      120 devboards ...      Erik Malund      02/28/10 07:05      
         How difficult or costly would it be to add one?      Richard Erlacher      02/28/10 09:40      
            neither difficult nor costly      Erik Malund      02/28/10 18:31      
         SILABs 040 has 2 uarts on it      Marshall Brown      03/15/10 19:58      
   with ds89c450 or 430      JecksonS Ben      02/28/10 20:06      
      But that's a chip - not a board!      Andy Neil      03/01/10 01:50      
         cheap boards      JecksonS Ben      03/01/10 19:49      
            this is what's meant      Richard Erlacher      03/01/10 23:40      
               No RS485      Andy Neil      03/02/10 02:26      
                  Example      Andy Neil      03/02/10 03:35      
                     bad example      Jan Waclawek      03/02/10 04:02      
                        No - excellent example!      Andy Neil      03/02/10 05:29      
                           likewise with that other board ...      Richard Erlacher      03/02/10 10:01      
                           And did *you* know what are you looking for?      Jan Waclawek      03/02/10 13:30      
                              You got it      Andy Neil      03/02/10 14:34      
                  why "never"?      Jan Waclawek      03/02/10 03:58      
                     the PC's not the best example ...      Richard Erlacher      03/02/10 10:17      
                        PC as an example      Jan Waclawek      03/02/10 13:21      
                           Lots of toys ... little of any practical use.      Richard Erlacher      03/02/10 17:59      
                              Different tools can be used in different ways      Per Westermark      03/12/10 13:11      
                                 where is your head wedged?      Richard Erlacher      03/13/10 19:47      
                                    Don't blame the PC for solving wrong things with USB      Per Westermark      03/13/10 20:31      
                                       There are many things for which USB is unsuited      Richard Erlacher      03/14/10 19:32      
                                          Every change since 1980 isn't for the worse        Per Westermark      03/14/10 23:02      
                                             Maybe, but this one is      Richard Erlacher      03/15/10 12:00      
                                                again      Andy Peters      03/15/10 13:02      
                                                   Thta's what you say ...      Richard Erlacher      03/16/10 02:56      
                                                      that's what you always say      Andy Peters      03/16/10 12:04      
                                                         Where you sit determines what you see      Richard Erlacher      03/17/10 12:02      
                                                            Where did you sit?      Per Westermark      03/17/10 12:37      
                                                   SPI solves completely different problem than HDLC      Per Westermark      03/18/10 08:50      
                                                and again      Stefan KAnev      03/15/10 13:37      
                                                   what about the required size of the driver?      Richard Erlacher      03/16/10 02:48      
                                                      required size of driver      Stefan KAnev      03/16/10 07:32      
                                                         What do you mean by PCL Cost?      Richard Erlacher      03/17/10 12:04      
                                                            price difference between similar printers -      Stefan KAnev      03/17/10 13:16      
                                                Define narrow view - I see oportunities, i.e. the reverse      Per Westermark      03/15/10 13:42      
                                                   not relevant      Richard Erlacher      03/16/10 02:59      
                                                      So the Windows driver didn't list 8051 compatibility???      Per Westermark      03/16/10 03:47      
                                          I vote Richard as president for ...      Erik Malund      03/15/10 13:20      
                                             That's what one would expect from you, Erik      Richard Erlacher      03/16/10 03:00      
                              USB and fixed-rate transfer      Andy Peters      03/15/10 12:50      
                                 Fortunately, there's DOS ...      Richard Erlacher      03/16/10 03:07      
                        Linux - I thought as much      Andy Neil      03/03/10 01:07      
                        PCs        Andy Peters      03/15/10 12:48      
                           you forgot about LINUX      Richard Erlacher      03/16/10 03:20      
   By this time, anybody could have built one...      Kiran V. Sutar      03/02/10 03:11      
      Funnily enough, ...      Andy Neil      03/02/10 03:33      
      no      Erik Malund      03/02/10 08:06      
   I Hate to ask this....      Justin Fontes      03/13/10 01:44      
      A *very* common requirement!      Andy Neil      03/13/10 02:05      
      if indeed      Erik Malund      03/13/10 07:08      

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