voltage divider calcs
in [Design]
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From: John Larkin on 24 Apr 2010 13:35 On Sat, 24 Apr 2010 12:12:01 -0500, "krw(a)att.bizzzzzzzzzzzz" <krw(a)att.bizzzzzzzzzzzz> wrote: >On Sat, 24 Apr 2010 09:43:00 -0700, John Larkin ><jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: > >>On Sat, 24 Apr 2010 15:12:19 GMT, Jan Panteltje >><pNaonStpealmtje(a)yahoo.com> wrote: >> >>>On a sunny day (Sat, 24 Apr 2010 05:23:16 +0200) it happened Sjouke Burry >>><burrynulnulfour(a)ppllaanneett.nnll> wrote in >>><4bd26424$0$14132$703f8584(a)textnews.kpn.nl>:am still using WIN3.11 for workgroups, have not needed any >>>>bugs fixed by M$. >>>>You dont need a new or refurbished OS or computer every 2 years. >>> >>>Exactly >>>Still running a 10 year old Duron 950 Mhz as server, and Linux of course. >>>All backuped 2 x. >>>When all applications run, there is no reason in the world to upgrade OS. >>> >>>To be honest, nothing really new, a killer application one *must* have, >>>has happend in the last 10 years.... >> >>Google Earth. > >FPGA tools that actually work. Xilinx is driving us crazy. Their support guys are under pressure to close cases, so they do the logical thing, which is close cases. Fixing things is apparently not a requirement. The logic is, apparently, if they stall long enough, eventually a new release will be on the horizon, so they say "install the new release" and, well, close the case. Downloading and installing a release, or a service pack, takes days. Occasionally it fixes things, probably by accident. We're having some success with the Spartan 6, as long as you use the tools in make-file mode (the GUI is a mess) and don't do anything too ambitious, like use the DRAM controller. My guys are seriously pushing me to go to Lattice or Altera. The silicon may not be as advanced, but the tools may be better. Dumping NuHorizons certainly didn't help. John
From: Michael A. Terrell on 24 Apr 2010 13:40 Sjouke Burry wrote: > > Michael A. Terrell wrote: > > "krw(a)att.bizzzzzzzzzzzz" wrote: > >> Michael A. Terrell wrote: > >>> Jim Thompson wrote: > >>>> Michael A. Terrell wrote: > >>>>> You can still upgrade your XP computers with new motherboards RAM and > >>>>> hard drives, but who knows how long before MS drops all support & > >>>>> updates? > >>>> Would that be a loss ?:-) > >>> That depends on whether you need a bug fixed. > >> Get real. > > > > > > I didn't say that you would get it, just that you'd need it. :) > > > > > I am still using WIN3.11 for workgroups, have not needed any > bugs fixed by M$. > You dont need a new or refurbished OS or computer every 2 years. My last new computer had windows ME, ten years ago. -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida http://www.flickr.com/photos/materrell/
From: Jan Panteltje on 24 Apr 2010 14:09 On a sunny day (Sat, 24 Apr 2010 12:12:01 -0500) it happened "krw(a)att.bizzzzzzzzzzzz" <krw(a)att.bizzzzzzzzzzzz> wrote in <bi96t5lr4mbbvqpcadtboii5anp48l7cc6(a)4ax.com>: >On Sat, 24 Apr 2010 09:43:00 -0700, John Larkin ><jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: > >>On Sat, 24 Apr 2010 15:12:19 GMT, Jan Panteltje >><pNaonStpealmtje(a)yahoo.com> wrote: >> >>>On a sunny day (Sat, 24 Apr 2010 05:23:16 +0200) it happened Sjouke Burry >>><burrynulnulfour(a)ppllaanneett.nnll> wrote in >>><4bd26424$0$14132$703f8584(a)textnews.kpn.nl>:am still using WIN3.11 for workgroups, have not needed any >>>>bugs fixed by M$. >>>>You dont need a new or refurbished OS or computer every 2 years. >>> >>>Exactly >>>Still running a 10 year old Duron 950 Mhz as server, and Linux of course. >>>All backuped 2 x. >>>When all applications run, there is no reason in the world to upgrade OS. >>> >>>To be honest, nothing really new, a killer application one *must* have, >>>has happend in the last 10 years.... >> >>Google Earth. > >FPGA tools that actually work. You could have switched to Altera in 2000 :-)
From: krw on 24 Apr 2010 14:16 On Sat, 24 Apr 2010 10:35:00 -0700, John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: >On Sat, 24 Apr 2010 12:12:01 -0500, "krw(a)att.bizzzzzzzzzzzz" ><krw(a)att.bizzzzzzzzzzzz> wrote: > >>On Sat, 24 Apr 2010 09:43:00 -0700, John Larkin >><jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: >> >>>On Sat, 24 Apr 2010 15:12:19 GMT, Jan Panteltje >>><pNaonStpealmtje(a)yahoo.com> wrote: >>> >>>>On a sunny day (Sat, 24 Apr 2010 05:23:16 +0200) it happened Sjouke Burry >>>><burrynulnulfour(a)ppllaanneett.nnll> wrote in >>>><4bd26424$0$14132$703f8584(a)textnews.kpn.nl>:am still using WIN3.11 for workgroups, have not needed any >>>>>bugs fixed by M$. >>>>>You dont need a new or refurbished OS or computer every 2 years. >>>> >>>>Exactly >>>>Still running a 10 year old Duron 950 Mhz as server, and Linux of course. >>>>All backuped 2 x. >>>>When all applications run, there is no reason in the world to upgrade OS. >>>> >>>>To be honest, nothing really new, a killer application one *must* have, >>>>has happend in the last 10 years.... >>> >>>Google Earth. >> >>FPGA tools that actually work. > >Xilinx is driving us crazy. Their support guys are under pressure to >close cases, so they do the logical thing, which is close cases. >Fixing things is apparently not a requirement. > >The logic is, apparently, if they stall long enough, eventually a new >release will be on the horizon, so they say "install the new release" >and, well, close the case. Ah, the Microsoft model. >Downloading and installing a release, or a service pack, takes days. >Occasionally it fixes things, probably by accident. Yes, and even if it doesn't fix the problem, a new case is opened. That does fix the problem (in their measurements system). >We're having some success with the Spartan 6, as long as you use the >tools in make-file mode (the GUI is a mess) and don't do anything too >ambitious, like use the DRAM controller. Thanks. I guess I'll cross Spartan 6 off the list, at least for now. >My guys are seriously pushing me to go to Lattice or Altera. The >silicon may not be as advanced, but the tools may be better. I'm having no problems with Altera's software, so far. I haven't pushed a design out for real but I have gone through the process. From my perspective I don't see much difference between Altera and Xilinx Spartan 4. I don't need the speed of either, though. I've pushed the design though the Actel tools, too. No issues with the software but the hardware only has three-input LUTs which increases the count by at least 50% which blew out my estimates (and the package). That was one of the things that I liked about Spartan 6 - six-input LUTs. I haven't seriously (far enough to run a design) looked at Lattice because their packages aren't good for the application. >Dumping NuHorizons certainly didn't help. I've had really good support from Arrow (Altera and Lattice). The FAE came and installed the software on my system and gave me a half day tutorial on it. They're even willing to help with the design. The sales guy is hungry. ;-)
From: John Larkin on 24 Apr 2010 14:32
On Sat, 24 Apr 2010 13:40:06 -0400, "Michael A. Terrell" <mike.terrell(a)earthlink.net> wrote: >Sjouke Burry wrote: >> >> Michael A. Terrell wrote: >> > "krw(a)att.bizzzzzzzzzzzz" wrote: >> >> Michael A. Terrell wrote: >> >>> Jim Thompson wrote: >> >>>> Michael A. Terrell wrote: >> >>>>> You can still upgrade your XP computers with new motherboards RAM and >> >>>>> hard drives, but who knows how long before MS drops all support & >> >>>>> updates? >> >>>> Would that be a loss ?:-) >> >>> That depends on whether you need a bug fixed. >> >> Get real. >> > >> > >> > I didn't say that you would get it, just that you'd need it. :) >> > >> > >> I am still using WIN3.11 for workgroups, have not needed any >> bugs fixed by M$. >> You dont need a new or refurbished OS or computer every 2 years. > > > My last new computer had windows ME, ten years ago. We run XP on HP ProLiant "server" boxes, all identical (we've bought 15 or so) with hot-plug RAID drives. That setup is about as solid as anything Microsoft-related gets. I'll wait a few years before considering Windows 7... try it on a throw-away laptop first maybe. An OS should be like a hammer. Boring. Undramatic. Simple. Reliable. John |