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Groups > comp.sys.raspberry-pi > #11675 > unrolled thread
| Started by | "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> |
|---|---|
| First post | 2016-06-09 14:47 +0100 |
| Last post | 2016-06-13 19:06 +0100 |
| Articles | 11 on this page of 71 — 23 participants |
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Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-09 14:47 +0100
Re: Direct digital I/O ? GlowingBlueMist <GlowingBlueMist@blackhole.io> - 2016-06-09 11:22 -0500
Re: Direct digital I/O ? "Dave Liquorice" <allsortsnotthisbit@howhill.com> - 2016-06-09 19:56 +0100
Re: Direct digital I/O ? Paul <paul@pcserviceselectronics.co.uk> - 2016-06-10 19:55 +0100
Re: Direct digital I/O ? Martin Gregorie <martin@address-in-sig.invalid> - 2016-06-10 22:27 +0000
Re: Direct digital I/O ? mm0fmf <none@invalid.com> - 2016-06-11 07:45 +0100
Re: Direct digital I/O ? Martin Gregorie <martin@address-in-sig.invalid> - 2016-06-11 08:37 +0000
Re: Direct digital I/O ? The Natural Philosopher <tnp@invalid.invalid> - 2016-06-11 09:41 +0100
Re: Direct digital I/O ? "Dave Liquorice" <allsortsnotthisbit@howhill.com> - 2016-06-11 11:17 +0100
Re: Direct digital I/O ? Paul <paul@pcserviceselectronics.co.uk> - 2016-06-11 14:00 +0100
Re: Direct digital I/O ? cb@elaine.df.lth.se (Christian Brunschen) - 2016-06-11 16:12 +0000
Re: Direct digital I/O ? Paul <paul@pcserviceselectronics.co.uk> - 2016-06-12 22:00 +0100
Re: Direct digital I/O ? cb@elaine.df.lth.se (Christian Brunschen) - 2016-06-12 22:40 +0000
Re: Direct digital I/O ? Paul <paul@pcserviceselectronics.co.uk> - 2016-06-13 11:02 +0100
Re: Direct digital I/O ? Paul <paul@pcserviceselectronics.co.uk> - 2016-06-12 22:04 +0100
Re: Direct digital I/O ? Paul <paul@pcserviceselectronics.co.uk> - 2016-06-11 13:49 +0100
Re: Direct digital I/O ? Rob <nomail@example.com> - 2016-06-11 09:23 +0000
Re: Direct digital I/O ? Ahem A Rivet's Shot <steveo@eircom.net> - 2016-06-11 10:47 +0100
Re: Direct digital I/O ? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-06-11 12:46 -0400
Re: Direct digital I/O ? mm0fmf <none@invalid.com> - 2016-06-12 09:20 +0100
Re: Direct digital I/O ? Michael J. Mahon <mjmahon@aol.com> - 2016-06-12 11:07 -0500
Re: Direct digital I/O ? andrew@cucumber.demon.co.uk (Andrew Gabriel) - 2016-06-12 16:13 +0000
Re: Direct digital I/O ? jeffj@panix.com (Jeff Jonas) - 2016-07-01 20:39 -0400
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-07-02 10:40 +0100
Re: Direct digital I/O ? Martin Gregorie <martin@address-in-sig.invalid> - 2016-07-02 13:55 +0000
Re: Direct digital I/O ? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2016-07-02 19:22 +0300
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-07-02 17:47 +0100
Re: Direct digital I/O ? Martin Gregorie <martin@address-in-sig.invalid> - 2016-07-02 17:07 +0000
Re: Direct digital I/O ? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2016-07-02 21:30 +0300
Re: Direct digital I/O ? The Natural Philosopher <tnp@invalid.invalid> - 2016-07-02 19:35 +0100
Re: Direct digital I/O ? Dave Higton <dave@davehigton.me.uk> - 2016-07-02 19:43 +0100
Re: Direct digital I/O ? The Natural Philosopher <tnp@invalid.invalid> - 2016-07-02 20:07 +0100
Re: Direct digital I/O ? andrew@cucumber.demon.co.uk (Andrew Gabriel) - 2016-07-03 18:59 +0000
Re: Direct digital I/O ? "Ivan D. Reid" <Ivan.Reid@ivan.fsnet.co.uk> - 2016-07-03 19:15 +0000
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-13 14:23 +0100
Re: Direct digital I/O ? Martin Gregorie <martin@address-in-sig.invalid> - 2016-06-13 14:13 +0000
Re: Direct digital I/O ? Martin Gregorie <martin@address-in-sig.invalid> - 2016-06-13 15:09 +0000
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-13 17:48 +0100
Re: Direct digital I/O ? mm0fmf <none@invalid.com> - 2016-06-13 17:45 +0100
Re: Direct digital I/O ? Martin Gregorie <martin@address-in-sig.invalid> - 2016-06-13 17:04 +0000
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-13 19:13 +0100
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-13 17:47 +0100
Re: Direct digital I/O ? Paul <paul@pcserviceselectronics.co.uk> - 2016-06-13 17:49 +0100
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-13 19:07 +0100
Re: Direct digital I/O ? rickman <gnuarm@gmail.com> - 2016-06-13 14:25 -0400
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-13 19:45 +0100
Re: Direct digital I/O ? Jim H <invalid@invalid.invalid> - 2016-06-13 20:14 +0000
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-14 09:38 +0100
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-13 19:57 +0100
Re: Direct digital I/O ? Mike Fleming <{mike}@tauzero.co.uk> - 2016-06-14 10:48 +0100
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-14 11:41 +0100
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-14 11:48 +0100
Re: Direct digital I/O ? rickman <gnuarm@gmail.com> - 2016-06-14 20:24 -0400
Re: Direct digital I/O ? The Natural Philosopher <tnp@invalid.invalid> - 2016-06-15 08:13 +0100
Re: Direct digital I/O ? rickman <gnuarm@gmail.com> - 2016-06-15 03:26 -0400
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-15 08:54 +0100
Re: Direct digital I/O ? AndyW <Andy@nojunqmail.com> - 2016-06-15 16:48 +0100
Re: Direct digital I/O ? Martin Gregorie <martin@address-in-sig.invalid> - 2016-06-15 21:02 +0000
Re: Direct digital I/O ? Martin Gregorie <martin@address-in-sig.invalid> - 2016-06-15 11:21 +0000
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-15 16:21 +0100
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-15 08:52 +0100
Re: Direct digital I/O ? Gordon Levi <gordon@address.invalid> - 2016-06-15 18:57 +1000
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-15 10:28 +0100
Re: Direct digital I/O ? rickman <gnuarm@gmail.com> - 2016-06-15 10:57 -0400
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-15 16:23 +0100
Re: Direct digital I/O ? Paul <paul@pcserviceselectronics.co.uk> - 2016-06-15 16:46 +0100
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-15 17:04 +0100
Re: Direct digital I/O ? Rob Morley <nospam@ntlworld.com> - 2016-06-15 17:43 +0100
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-15 20:57 +0100
Re: Direct digital I/O ? Paul <paul@pcserviceselectronics.co.uk> - 2016-06-13 17:46 +0100
Re: Direct digital I/O ? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-06-13 19:06 +0100
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| From | "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> |
|---|---|
| Date | 2016-06-15 08:52 +0100 |
| Subject | Re: Direct digital I/O ? |
| Message-ID | <njr1fc$al6$1@dont-email.me> |
| In reply to | #11860 |
"rickman" <gnuarm@gmail.com> wrote in message news:njq770$ao1$2@dont-email.me... > On 6/14/2016 5:48 AM, Mike Fleming wrote: >> In article <njmvm0$8us$1@dont-email.me>, "gareth G4SDW GQRP #3339" >> <no.spam@thank.you.invalid> writes: >>> "rickman" <gnuarm@gmail.com> wrote in message >>> news:njmtr1$g4$1@dont-email.me... >>>> I see the guy is giving you a hard time. He really is a troll and the >>>> best thing to do is to *totally* ignore him. Don't respond even to >>>> tell >>>> him you are ignoring him. I don't think that is going to happen in >>>> this >>>> group, but it would be for the best. >>> Why not put your money where your mouth is and give examples of where >>> you say that I have trolled? >> You have persistently trolled on uk.net.news.config and >> uk.net.news.management, where you are one of the most universally >> despised and hated posters. I see your ambition has increased. > I am really sorry to see the infection has spread to > comp.sys.raspberry-pi. I hope that people here can see how important it > is to not respond to trolls. This guy has ruined a number of groups. Agreed. Fleming is a foul-mouthed person.
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| From | Gordon Levi <gordon@address.invalid> |
|---|---|
| Date | 2016-06-15 18:57 +1000 |
| Subject | Re: Direct digital I/O ? |
| Message-ID | <n062mbl6d6ukg8rpa12lqaps0vq520hfk4@4ax.com> |
| In reply to | #11860 |
rickman <gnuarm@gmail.com> wrote: >On 6/14/2016 5:48 AM, Mike Fleming wrote: >> In article <njmvm0$8us$1@dont-email.me>, "gareth G4SDW GQRP #3339" >> <no.spam@thank.you.invalid> writes: >> >>> "rickman" <gnuarm@gmail.com> wrote in message >>> news:njmtr1$g4$1@dont-email.me... >>>> I see the guy is giving you a hard time. He really is a troll and the >>>> best thing to do is to *totally* ignore him. Don't respond even to tell >>>> him you are ignoring him. I don't think that is going to happen in this >>>> group, but it would be for the best. >>> >>> Why not put your money where your mouth is and give examples of where >>> you say that I have trolled? >> >> You have persistently trolled on uk.net.news.config and >> uk.net.news.management, where you are one of the most universally >> despised and hated posters. I see your ambition has increased. > >I am really sorry to see the infection has spread to >comp.sys.raspberry-pi. I hope that people here can see how important it >is to not respond to trolls. This guy has ruined a number of groups. Any reputable news client can block his posts and all replies. If you never have to see them how can his posts ruin a news group?
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| From | "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> |
|---|---|
| Date | 2016-06-15 10:28 +0100 |
| Subject | Re: Direct digital I/O ? |
| Message-ID | <njr73r$t4k$1@dont-email.me> |
| In reply to | #11878 |
"Gordon Levi" <gordon@address.invalid> wrote in message news:n062mbl6d6ukg8rpa12lqaps0vq520hfk4@4ax.com... > rickman <gnuarm@gmail.com> wrote: >>On 6/14/2016 5:48 AM, Mike Fleming wrote: >>> In article <njmvm0$8us$1@dont-email.me>, "gareth G4SDW GQRP #3339" >>> <no.spam@thank.you.invalid> writes: >>>> "rickman" <gnuarm@gmail.com> wrote in message >>>> news:njmtr1$g4$1@dont-email.me... >>>>> I see the guy is giving you a hard time. He really is a troll and the >>>>> best thing to do is to *totally* ignore him. Don't respond even to >>>>> tell >>>>> him you are ignoring him. I don't think that is going to happen in >>>>> this >>>>> group, but it would be for the best. >>>> Why not put your money where your mouth is and give examples of where >>>> you say that I have trolled? >>> You have persistently trolled on uk.net.news.config and >>> uk.net.news.management, where you are one of the most universally >>> despised and hated posters. I see your ambition has increased. >>I am really sorry to see the infection has spread to >>comp.sys.raspberry-pi. I hope that people here can see how important it >>is to not respond to trolls. This guy has ruined a number of groups. > Any reputable news client can block his posts and all replies. If you > never have to see them how can his posts ruin a news group? Exactly right. I suspect that they are using me to justify their own abusive outbursts. Were they to grow up past the emotional age of a 5-year-old, then perhaps they could take responsibility for their own tendencies for abuse? Thinking outside the box has been the mantra of ineffectual management in industry for some years now, but when there are those who do that, odd that it stimulates abusive personal campaigns. Once again, I challenge those who say that I troll and ruin numerous NGs to give specific examples. In rec.radio.amateur.antenna I mused that the formula for radiation from antennas were based only on experimental observation and that the medium could also in some way govern radiation. Such a subject is not covered in the textbooks. Also, having English textbooks on the subject from the 1940s, I bemoaned the lack of education amongst techies for using the wrong plural, antennas, for antennae. In uk.radio.amateur I have held. a stance for 20 years that the twin traditions of gentlemanliness and technical motivation should be maintained. In comp.dsp, in revising my electronics knowledge (Essex, 1969 - 1972) it seemed to me, subsequently shown to be right, that there was a significant mathematical error in what was presented in most textbooks for the explanation of sampling. In all those cases, I was met with many people who could not discuss the topics and angrily quoted their textbooks at me finally resorting to personal abuse. That now happens here, merely because my interest is in low level system software of my own creation, fomented by my experiences from 1971 till 1974 working at the Scientific Services Dept at Portishead Power Station on naked PDP11s, and interest which does not fit in with the mainstream of Pi users. Why cannot people behave as do grownups, and, if not interested in a topic or in me, use a KF instead of leaping in with personal abuse? Were you to look at the NG uk.radio.amateur over the past few months, specifically the posts from The Three Amigos, reay, cole and tomlinson, you would very soon realise just who is ruining that NG (and also this one, it would seem)
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| From | rickman <gnuarm@gmail.com> |
|---|---|
| Date | 2016-06-15 10:57 -0400 |
| Subject | Re: Direct digital I/O ? |
| Message-ID | <njrqdl$3dk$2@dont-email.me> |
| In reply to | #11878 |
On 6/15/2016 4:57 AM, Gordon Levi wrote: > rickman <gnuarm@gmail.com> wrote: > >> On 6/14/2016 5:48 AM, Mike Fleming wrote: >>> In article <njmvm0$8us$1@dont-email.me>, "gareth G4SDW GQRP #3339" >>> <no.spam@thank.you.invalid> writes: >>> >>>> "rickman" <gnuarm@gmail.com> wrote in message >>>> news:njmtr1$g4$1@dont-email.me... >>>>> I see the guy is giving you a hard time. He really is a troll and the >>>>> best thing to do is to *totally* ignore him. Don't respond even to tell >>>>> him you are ignoring him. I don't think that is going to happen in this >>>>> group, but it would be for the best. >>>> >>>> Why not put your money where your mouth is and give examples of where >>>> you say that I have trolled? >>> >>> You have persistently trolled on uk.net.news.config and >>> uk.net.news.management, where you are one of the most universally >>> despised and hated posters. I see your ambition has increased. >> >> I am really sorry to see the infection has spread to >> comp.sys.raspberry-pi. I hope that people here can see how important it >> is to not respond to trolls. This guy has ruined a number of groups. > > Any reputable news client can block his posts and all replies. If you > never have to see them how can his posts ruin a news group? I have him killfiled in a number of groups. But the thread still shows up because people keep replying to him. I can manually ignore a thread which I should do with this one. -- Rick C
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| From | "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> |
|---|---|
| Date | 2016-06-15 16:23 +0100 |
| Subject | Re: Direct digital I/O ? |
| Message-ID | <njrrst$bt4$1@dont-email.me> |
| In reply to | #11925 |
"rickman" <gnuarm@gmail.com> wrote in message news:njrqdl$3dk$2@dont-email.me... > > I have him killfiled in a number of groups. Ignoring me is fine, for my remarks are not targetted at the incurably block headed; but why then resort to the infant's style of abusive remarks? Why even respond in this thread in the way that you have?
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| From | Paul <paul@pcserviceselectronics.co.uk> |
|---|---|
| Date | 2016-06-15 16:46 +0100 |
| Subject | Re: Direct digital I/O ? |
| Message-ID | <MPG.31cb88ca6a3381a9989802@172.16.0.1> |
| In reply to | #11925 |
In article <njrqdl$3dk$2@dont-email.me>, gnuarm@gmail.com says... > > On 6/15/2016 4:57 AM, Gordon Levi wrote: > > rickman <gnuarm@gmail.com> wrote: > > > >> On 6/14/2016 5:48 AM, Mike Fleming wrote: > >>> In article <njmvm0$8us$1@dont-email.me>, "gareth G4SDW GQRP #3339" > >>> <no.spam@thank.you.invalid> writes: > >>> > >>>> "rickman" <gnuarm@gmail.com> wrote in message > >>>> news:njmtr1$g4$1@dont-email.me... > >>>>> I see the guy is giving you a hard time. He really is a troll and the > >>>>> best thing to do is to *totally* ignore him. Don't respond even to tell > >>>>> him you are ignoring him. I don't think that is going to happen in this > >>>>> group, but it would be for the best. > >>>> > >>>> Why not put your money where your mouth is and give examples of where > >>>> you say that I have trolled? > >>> > >>> You have persistently trolled on uk.net.news.config and > >>> uk.net.news.management, where you are one of the most universally > >>> despised and hated posters. I see your ambition has increased. > >> > >> I am really sorry to see the infection has spread to > >> comp.sys.raspberry-pi. I hope that people here can see how important it > >> is to not respond to trolls. This guy has ruined a number of groups. > > > > Any reputable news client can block his posts and all replies. If you > > never have to see them how can his posts ruin a news group? > > I have him killfiled in a number of groups. But the thread still shows > up because people keep replying to him. I can manually ignore a thread > which I should do with this one. ditto -- Paul Carpenter | paul@pcserviceselectronics.co.uk <http://www.pcserviceselectronics.co.uk/> PC Services <http://www.pcserviceselectronics.co.uk/pi/> Raspberry Pi Add-ons <http://www.pcserviceselectronics.co.uk/fonts/> Timing Diagram Font <http://www.badweb.org.uk/> For those web sites you hate
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| From | "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> |
|---|---|
| Date | 2016-06-15 17:04 +0100 |
| Subject | Re: Direct digital I/O ? |
| Message-ID | <njrual$lnh$1@dont-email.me> |
| In reply to | #11940 |
"Paul" <paul@pcserviceselectronics.co.uk> wrote in message news:MPG.31cb88ca6a3381a9989802@172.16.0.1... > In article <njrqdl$3dk$2@dont-email.me>, gnuarm@gmail.com says... >> >> I have him killfiled in a number of groups. But the thread still shows >> up because people keep replying to him. I can manually ignore a thread >> which I should do with this one. > > ditto But what do you again by crowing here that you have KFed someone? Why respond at all, unless it is malicious?
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| From | Rob Morley <nospam@ntlworld.com> |
|---|---|
| Date | 2016-06-15 17:43 +0100 |
| Subject | Re: Direct digital I/O ? |
| Message-ID | <20160615174324.5e245a02@ntlworld.com> |
| In reply to | #11925 |
On Wed, 15 Jun 2016 10:57:56 -0400 rickman <gnuarm@gmail.com> wrote: > I have him killfiled in a number of groups. But the thread still > shows up because people keep replying to him. I can manually ignore > a thread which I should do with this one. > If you use a news client that can filter on body as well as headers you can eliminate any mention of him (as long as any follow-ups have properly formed attributions, which is the vast majority).
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| From | "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> |
|---|---|
| Date | 2016-06-15 20:57 +0100 |
| Subject | Re: Direct digital I/O ? |
| Message-ID | <njsbvb$aeg$1@dont-email.me> |
| In reply to | #11948 |
"Rob Morley" <nospam@ntlworld.com> wrote in message news:20160615174324.5e245a02@ntlworld.com... > On Wed, 15 Jun 2016 10:57:56 -0400 > rickman <gnuarm@gmail.com> wrote: > >> I have him killfiled in a number of groups. But the thread still >> shows up because people keep replying to him. I can manually ignore >> a thread which I should do with this one. >> > If you use a news client that can filter on body as well as headers you > can eliminate any mention of him (as long as any follow-ups have > properly formed attributions, which is the vast majority). Another non-relevant troll making personal attacks? Why does he do that?
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| From | Paul <paul@pcserviceselectronics.co.uk> |
|---|---|
| Date | 2016-06-13 17:46 +0100 |
| Message-ID | <MPG.31c8f3d422128f4c989800@172.16.0.1> |
| In reply to | #11714 |
In article <njmc5g$iip$1@dont-email.me>, no.spam@thank.you.invalid says... > > "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> wrote in message > news:njbs2a$96b$1@dont-email.me... > > Inspired by Oscar Vermeulen's emulations of PDP8 and PDP11 front > > panels (I've used both processors, in my time over the past 40 years) > > but as yet inexperienced in the RPi world (despite getting Pi1 2 > > years ago and Pi2 one year ago :-( ), I'd like to consider > > producing a similar front panel low-level access for the RPi itself. > > Is anyone aware of direct digital I/O facilities for the RPi, ie, in > > not going via the I2C bus? > > Or, even an I/O bus creation facility, perhaps much along the lines > > of the PDP8's Omnibus? > > Also, what of interfacing a hard disk into the SD card slot.? > > Apologies if I have posed these questions before, for it > > always takes me many months to come to a definite decision; > > never put off till tomorrow what you can put off till the day after :-) > > Interesting that the above has fomented a lot of negative thinking > and defeatism, and, for the moaners in those categories, yes, I > agree wholeheartedly, that it wouldn't work out for you. > > I had in mind a miniscult monitor program, with NMI being > driven from the ersatz Halt switch, and to use the built-in > debug instructions to perform single stepping. You do realise that you have a high likely hood of stopping DRAM refresh and other nasties, potentially doing things like bricking your SD card let alone cause many other problems. If you attach a switch to reset line you have a good chance of needing spare SD cards. The RPi and the system with all its peripherals is a completely different beast to the old systems. Even if you could manage to write into memory, with halted CPU, how are you going to be sure the on CPU caches KNOW the value is different to what they hold. What locations are you expecting to examine/modify, as memory management unit will make it impossible for you to work out the steps in locations of your one task. Play with RPi as it is and get to understand how it works as it is. Having multiple terminal windows on graphical, and multiple sessions by <ALT> + <F1> onwards gives you ability to do many things at once and stop errant tasks etc.. -- Paul Carpenter | paul@pcserviceselectronics.co.uk <http://www.pcserviceselectronics.co.uk/> PC Services <http://www.pcserviceselectronics.co.uk/pi/> Raspberry Pi Add-ons <http://www.pcserviceselectronics.co.uk/fonts/> Timing Diagram Font <http://www.badweb.org.uk/> For those web sites you hate
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| From | "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> |
|---|---|
| Date | 2016-06-13 19:06 +0100 |
| Message-ID | <njmsmo$sok$1@dont-email.me> |
| In reply to | #11724 |
"Paul" <paul@pcserviceselectronics.co.uk> wrote in message news:MPG.31c8f3d422128f4c989800@172.16.0.1... > You do realise that you have a high likely hood of stopping DRAM refresh > and other nasties, potentially doing things like bricking your SD card > let alone cause many other problems. > If you attach a switch to reset line you have a good chance of needing > spare SD cards. > The RPi and the system with all its peripherals is a completely > different beast to the old systems. > Even if you could manage to write into memory, with halted CPU, how > are you going to be sure the on CPU caches KNOW the value is different > to what they hold. > What locations are you expecting to examine/modify, as memory management > unit will make it impossible for you to work out the steps in locations > of your one task. > Play with RPi as it is and get to understand how it works as it is. > Having multiple terminal windows on graphical, and multiple sessions by > <ALT> + <F1> onwards gives you ability to do many things at once and > stop errant tasks etc.. It seems as though you lack either experience or knowledge of working with electronics and microprocessors at the soldering iron and logic gate level?
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