Amiga used hard wired control pins for managing floppy drive. As far As I can remember control pins used for disk detection were:
11./CHNG Disk change, Low state == No disk in drive
14./WPRO Write protect
15./TK0 Disk drive head over track 0.
The key pin was pin 11. On a PC floppy drive pin 34 was disk change, surprisingly it was never used on Windows.
Again, wrong. If You have EVER opened an Amiga 500 floppy, you could see the sensor. The sensor that is not present is tho one that detects the other end of the head motion, that is usually track 81, on better drives 82.
Disclaimer: I have no idea what type of floppy drive an Amiga 1000 uses, I never had A1000.
But I do have an Amiga 500 and Amiga 1200, both in working order, and a pile of external floppy drives, and internal floppy drive from Amiga 2000. Every single one of them has 0 track alignment sensor and uses it. The only way to get the different click sound is to deliberately ignore state of/TK0, pin 15, and to order head position to decrease. It is possible, but will not occur unless you disconnect the sensor.
If You need an photo of Amiga floppy with sensors, e-mail me on junky_space_fee(a_t)yahoo.com
Wrong. Commodore Amiga used standard industrial floppy drives, (as did Rolland for theirs midi boxes). Note: standard industrial floppy drives have noting in common with floppy drives used in Atari, Amstrad CPC and PC clones except for data storage medium. Amiga had capability of detecting floppy disks without spinning them, could use up to 4 floppy drives on single controller and DMA access was default mode for floppy use.
Ticking sound was meant as a reminder to prevent damage that could occur if hardware / cables were removed while Amiga was powered on. It could be silenced, an patch (CLI) command is available on http://aminet.net/disk/misc/anticlick.lha and the exe size is 178 bytes.
Even if floppy drives for PC clones had DMA capability there was no support form BIOS, or more likely floppy drives were too different for easy support via BIOS. Most of floppy drives could not even be rewired for DMA enabled operation. The only model that could be modified to respond to commands from DMA capable hardware as far as I know was Panasonic's JU-257A floppy drive.
Sounded strange to me too. After Facebook changed terms of service in a way to allow them to license and sub-license whatever Facebook users share I was considering to leave the FB forever. It was rumored that FB could have backdoor allowing monitoring of the all communications between users. When I saw this headline http://www.telegraph.co.uk/scienceandtechnology/technology/facebook/5046447/Facebook-could-be-monitored-by-the-government.html I decided to erase my account and leave the FB forever because I was afraid that new terms of service and looks was not all that has changed.
I guess that The Pirate Bay has nothing to lose. Facebook is probably the most closed community on the internet, so getting in the one such community might look like a good strategic move.
I might, but in my country law says it is. The prosecutor had nothing, yet she was arrested. I'm just wondering what would have happened if they found that pictures on her boyfriend's MySpace account.
I was trying to be sarcastic. All I wanted to say is that she'll be 18, and "Mr.Law" might pull the case out of drawer and arrest her again.
I think that someone is trying to make an example of her. It is good that ACLU stepped in.
Capacitors in series with transformers == bad idea. Such thing converts power grid into the antenna and resonant circuit tuned to some frequency, and that is bad. Transformers usually do not melt if they have proper fuses and excess voltage discharge devices.
Why is this problem and solution different from say EMP's from nuclear blasts?
Because frequency, intensity and duration of EMP might be different. It probably changes nothing, as it will damage the same systems.
How are the solutions and protection different also?
They might be the same. The frequency of solar storm induced EM pulse should be much lower and the pulse would affect the whole planet.
Would things like Faraday cages protect critical infrastructure?
They could protect all except for power lines. For protecting power lines we need fuse breakers and excess voltage discharge devices, and a lot of effort to repair the damaged equipment after the EMP.
Breaking the power grid into the smaller peaces could prevent catastrophic failure in case of the solar induced EM storm, or it may likely prevent serious damage to the grid. Your idea is great, but, 7. gives me a worries.
What about putting some large capacitors in series with the transformers?
Are you serious? The capacitors could easily end up larger than transformers that they are protecting. Even if someone would try to use the capacitors, the resulting system would act like gigantic antenna tuned to some frequency. If the EMP or EM storm pulse frequency is close enough to the resonant frequency of the transformer/capacitor/power-line large amount of EM energy will end up in power distribution system as a power spike, which is not good at all.
As a cyborg (literally, if technically) I have to wonder what such a solar electrical storm would do to implanted electronic medical devices, such as my pacemaker.
I don't think that standard EM storm could damage your pacemaker directly. However, electric energy tends to accumulate in power grid and might burst as local EM discharge, which if is close enough, can damage your peacemaker. An lightning strike is a natural EM discharge. I'm sure it could damage an pacemaker if discharge is close enough.
Bottom line: Wear your EM filed suppressor shirt all time.
I thought we had circuit breakers to prevent these problems.
You don't need a closed circuit to fry a small coil with a big enough inductive load.
No, you don't, but inductance of the transformer coil will prevent the surge current form burning out the wire. The resulted voltage spike is conducted via discharge path. Transformers are usually fairly protected against surges. Sadly, power lines are poorly protected, I guess they are bound to fail.
But aren't these things fairly well shielded anyway? I can't imagine a big EMP pulse getting through a zinc wrapper (galvanised steel can, isn't it?) and then I'd think you're dealing with some fairly heavy duty windings. Power line transformers survive lightning strikes sometimes, don't they?
Most transformers are self shielded by design. They do not relay on external shielding / Faraday cage. Yes, windings in most power transformers can survive lightning strikes, but that is mostly because of external protection.
Why? What you've done is given me an opinion, without trying to justify it. Not useful in an argument, if you're arguing with me, I know you're opinion is different from mine!
Because link != data or file. Wikileaks posted a list of the internet sites to be censored, and it was raided because of it, not because of the child porn. The list was availble to the public, police could just download it. Looks like someone wants to close Wikileaks.de at any cost.
So people become less likely to produce it in future, that's simple economics. Additionally, if I can access all the child porn I want, it probably makes me think "this isn't so bad".
Filtering is not the solution to the problem, it is like turning head away from it. Filtering does not strike the crime, it strikes around it. I was expecting Interpol raid on the foul internet server containing child porn, not the Wikileaks.de site.
I'll make an example. Lets assume that I have link on my homepage pointing to the site that explains how to make explosives or an A-bomb. Does that makes me a terrorist?
Should that site be filtered out?
Should my home be raided because of the link?
There is big difference between thinking, saying and doing. Sadly today saying seems to be equal to doing.
I just wonder how long before thinking would become equal to saying.
Posting a link can't be disgusting, or wrong or bad. It is the content that is foul not the link.
Censoring achieves nothing. The foul site is still there, just not available to everyone. Also censoring makes more censoring to appear normal everyday activity, a bad legacy for the generations to come.
If it's almost free, then why don't you do it? Surely you can afford to implement an almost free energy generation system.
I'll tell you why: Land, infrastructure, maintenance, delivery, and research are not cheap. You can't afford to do it. Shell has decided it can't, either.
Wrong. Here is how capitalism works:
A) You made it. You can use it, but if you sell it You'll have the money.
B) You made it. If you sell it today, you'll have money today, but not tomorrow. You need to make another one to sell it tomorrow to have money tomorrow too.
C) You made it. You can sell it, but if you rent it you'll have money today and tomorrow and day after tomorrow and so on... so why selling it?
I think Shell is moving From B to C as much modern production model with their biofuel / carbon sequestration. Also staying with biofuel means no surge investment in infrastructure, only gradual investing in carbon sequestration / biofuel production.
It did look like a piece of trash, but it was not micro sized. I was less than meter long while hanging on the power line, at least it seemed that long while I was looking at it form the ground. Somehow I resisted the urge to hit it with the rock, I knew what it was the first moment I saw it.
I saw it months before or after the article mentioned it, I can't remember now. It just reminds me how close US military base Camp Bondsteel is from my hometown.
I have used all my hard drives under 2GB for routers/wireless nodes.
I keep my pass-phrases / passwords, encryption software on old thumb drives that have lock button. There is no other use I can think of today for a thumb drive of size 32-128MB today.
I have modified this project to make bike light that uses single 1.5V battery, four white LEDs in the front light and one red LED in the black connected in series. It can work on 1.2V Ni-MH battery too, it is cheap and easy to build. I have used E core transformer form broken mobile phone charger instead of ferrite bead. The next version I'll build will use single Li-Ion cell and will have integrated recharger.
No, they do not. I spent 12 years in school learning how to write with the pencil, and now they PUT MOUSE in my hand.
No, I wanted to take it for the test drive before I pay for IT. / Yes, but the package referred to something else.
No. While looking at it, I had funny feeling that someone wants to enslave me and rob my family.
No, they want me to pay for the upgrade even if they had not stated that in the "EULA". / Yes, but if I click on nope the software will stop to work without any notice.
Dear Judge, I the defendant, want to state that:
I have NO OFFICIAL TRAINING IN ENGLISH LANGUAGE, AND NO OFFICIAL TRAINING IN COMPUTER MOUSE/TRACKBAL/GLIDE-PAD/WHATEVER USE, therefore I am UNABLE TO understand the difference between "I Agrre" and "I don't" or take any willing action.
The software installer that plaintiff refers to launched after I the defendant inserted the disc into the CD/DVD tray without any approval form me, the defendant.
The pop-up box asked about something called "Setup" and gave no information about it. What followed after gave no additional information about "Setup".
Here not present mister cat, played with "the mouse", also known as "the mice", and keyboard causing all sorts of strange behavior including sudden screen saver animation disruption, clicks and pops, and EULA pop-up which resulted in mentioned above "I Agree" and "I don't" buttons.
After several minutes of rather cruel action against device called "the mouse" by the plaintiff, here not present mister cat caused unwanted software installation, mentioned by the plaintiff as "the software installation".
Switching form 802.11g to 802.11b mode gains 6-7 dB in signal to noise ratio. I am quite pleased with 500-600 KB/s that I can use almost all the time.
It is common misconception that channels 1, 6 and 11 do not overlap. They do not overlap only if everyone keeps their EIRP in recommended limits and all network parties use directional antennas for their "client" side. If EIRP is not keept in recommended range background noise builds up and clients in crowded areas suffer form low signal to noise ratio. Good SNR is 30dB and more, 40dB and above is excelent.
If you get the chance to move out, consider getting a Passive House, where it has super-thick insulation and is hermetically sealed. You wouldn't have to worry about frozen pipes in that kind of setup.
That is great idea, but will not bite in US, at least not soon.
I've been reading posts form the top of the discussion, and most of them were about "male-male suicide cord", 500$ automatic transfer switch, wood furnace that needs electricity to work, how many MW generator needs to have to run the house and what kind of the fueling system is the best.
It seems taht people in US have no idea that wood furnace can be made to work without any electricity, and that it can heat up the pipes and make enough water flow to prevent pipes from bursting.
1kW blower fan? I heat my room on 1 kW. 500$ for relay switch and handful of circuit breakers? Is that a joke?
Idea:
Gasoline powered generator converts less than 30% of fuel energy in to the electricity. The rest of energy is the heat, hot water than can save pipes from bursting if used in house heating cicuit.
Modification may require heat exchanger, some pipes and insulation, maybe an additional circulation pump. Advantages: Your generator is preheated and ready, heat from the generator heats the house, and you have electricity. Disadvantages: some heat will be lost trough the piping insulation and in the heat exchanger, your heating system becomes more complicated, messing with the generator equals no warranty.
Anyway, great idea, excellent post, enjoy the new year and Your score.
Slashdot Mirror
http://aminet.net/search?query=noclick
Amiga used hard wired control pins for managing floppy drive. As far As I can remember control pins used for disk detection were: /CHNG Disk change, Low state == No disk in drive /WPRO Write protect /TK0 Disk drive head over track 0.
11.
14.
15.
The key pin was pin 11. On a PC floppy drive pin 34 was disk change, surprisingly it was never used on Windows.
Again, wrong. If You have EVER opened an Amiga 500 floppy, you could see the sensor. The sensor that is not present is tho one that detects the other end of the head motion, that is usually track 81, on better drives 82.
/TK0, pin 15, and to order head position to decrease. It is possible, but will not occur unless you disconnect the sensor.
Disclaimer: I have no idea what type of floppy drive an Amiga 1000 uses, I never had A1000.
But I do have an Amiga 500 and Amiga 1200, both in working order, and a pile of external floppy drives, and internal floppy drive from Amiga 2000. Every single one of them has 0 track alignment sensor and uses it. The only way to get the different click sound is to deliberately ignore state of
If You need an photo of Amiga floppy with sensors, e-mail me on junky_space_fee(a_t)yahoo.com
Wrong. Commodore Amiga used standard industrial floppy drives, (as did Rolland for theirs midi boxes). Note: standard industrial floppy drives have noting in common with floppy drives used in Atari, Amstrad CPC and PC clones except for data storage medium. Amiga had capability of detecting floppy disks without spinning them, could use up to 4 floppy drives on single controller and DMA access was default mode for floppy use.
Ticking sound was meant as a reminder to prevent damage that could occur if hardware / cables were removed while Amiga was powered on. It could be silenced, an patch (CLI) command is available on http://aminet.net/disk/misc/anticlick.lha and the exe size is 178 bytes.
Even if floppy drives for PC clones had DMA capability there was no support form BIOS, or more likely floppy drives were too different for easy support via BIOS. Most of floppy drives could not even be rewired for DMA enabled operation. The only model that could be modified to respond to commands from DMA capable hardware as far as I know was Panasonic's JU-257A floppy drive.
Sounded strange to me too. After Facebook changed terms of service in a way to allow them to license and sub-license whatever Facebook users share I was considering to leave the FB forever. It was rumored that FB could have backdoor allowing monitoring of the all communications between users. When I saw this headline http://www.telegraph.co.uk/scienceandtechnology/technology/facebook/5046447/Facebook-could-be-monitored-by-the-government.html I decided to erase my account and leave the FB forever because I was afraid that new terms of service and looks was not all that has changed.
I guess that The Pirate Bay has nothing to lose. Facebook is probably the most closed community on the internet, so getting in the one such community might look like a good strategic move.
I might, but in my country law says it is. The prosecutor had nothing, yet she was arrested. I'm just wondering what would have happened if they found that pictures on her boyfriend's MySpace account.
I was trying to be sarcastic. All I wanted to say is that she'll be 18, and "Mr.Law" might pull the case out of drawer and arrest her again.
I think that someone is trying to make an example of her. It is good that ACLU stepped in.
Capacitors in series with transformers == bad idea. Such thing converts power grid into the antenna and resonant circuit tuned to some frequency, and that is bad. Transformers usually do not melt if they have proper fuses and excess voltage discharge devices.
This is how shutdown of the HV power line looks like http://www.youtube.com/watch?v=mpb0JTL_Ec0&feature=channel
I hope that warning can arrive on time, high voltage switches and generators must be prepared for switching off / shutdown.
Why is this problem and solution different from say EMP's from nuclear blasts?
Because frequency, intensity and duration of EMP might be different. It probably changes nothing, as it will damage the same systems.
How are the solutions and protection different also?
They might be the same. The frequency of solar storm induced EM pulse should be much lower and the pulse would affect the whole planet.
Would things like Faraday cages protect critical infrastructure?
They could protect all except for power lines. For protecting power lines we need fuse breakers and excess voltage discharge devices, and a lot of effort to repair the damaged equipment after the EMP.
Breaking the power grid into the smaller peaces could prevent catastrophic failure in case of the solar induced EM storm, or it may likely prevent serious damage to the grid. Your idea is great, but, 7. gives me a worries.
What about putting some large capacitors in series with the transformers?
Are you serious? The capacitors could easily end up larger than transformers that they are protecting. Even if someone would try to use the capacitors, the resulting system would act like gigantic antenna tuned to some frequency. If the EMP or EM storm pulse frequency is close enough to the resonant frequency of the transformer/capacitor/power-line large amount of EM energy will end up in power distribution system as a power spike, which is not good at all.
As a cyborg (literally, if technically) I have to wonder what such a solar electrical storm would do to implanted electronic medical devices, such as my pacemaker.
I don't think that standard EM storm could damage your pacemaker directly. However, electric energy tends to accumulate in power grid and might burst as local EM discharge, which if is close enough, can damage your peacemaker. An lightning strike is a natural EM discharge. I'm sure it could damage an pacemaker if discharge is close enough.
Bottom line: Wear your EM filed suppressor shirt all time.
I thought we had circuit breakers to prevent these problems.
You don't need a closed circuit to fry a small coil with a big enough inductive load.
No, you don't, but inductance of the transformer coil will prevent the surge current form burning out the wire. The resulted voltage spike is conducted via discharge path. Transformers are usually fairly protected against surges. Sadly, power lines are poorly protected, I guess they are bound to fail.
But aren't these things fairly well shielded anyway? I can't imagine a big EMP pulse getting through a zinc wrapper (galvanised steel can, isn't it?) and then I'd think you're dealing with some fairly heavy duty windings. Power line transformers survive lightning strikes sometimes, don't they?
Most transformers are self shielded by design. They do not relay on external shielding / Faraday cage. Yes, windings in most power transformers can survive lightning strikes, but that is mostly because of external protection.
I see she was not charged for pedophilia. At least not yet.
Why? What you've done is given me an opinion, without trying to justify it. Not useful in an argument, if you're arguing with me, I know you're opinion is different from mine!
Because link != data or file. Wikileaks posted a list of the internet sites to be censored, and it was raided because of it, not because of the child porn. The list was availble to the public, police could just download it. Looks like someone wants to close Wikileaks.de at any cost.
So people become less likely to produce it in future, that's simple economics. Additionally, if I can access all the child porn I want, it probably makes me think "this isn't so bad".
Filtering is not the solution to the problem, it is like turning head away from it. Filtering does not strike the crime, it strikes around it. I was expecting Interpol raid on the foul internet server containing child porn, not the Wikileaks.de site.
I'll make an example. Lets assume that I have link on my homepage pointing to the site that explains how to make explosives or an A-bomb.
Does that makes me a terrorist?
Should that site be filtered out?
Should my home be raided because of the link?
There is big difference between thinking, saying and doing. Sadly today saying seems to be equal to doing.
I just wonder how long before thinking would become equal to saying.
Posting a link can't be disgusting, or wrong or bad. It is the content that is foul not the link.
Censoring achieves nothing. The foul site is still there, just not available to everyone. Also censoring makes more censoring to appear normal everyday activity, a bad legacy for the generations to come.
Your point is OK. Making money out of PV solar energy and wind power is too expensive and not profitable enough, and it costs allot upfront.
I claim that making biofuel is renting CO2, well sort of.
If it's almost free, then why don't you do it? Surely you can afford to implement an almost free energy generation system.
I'll tell you why: Land, infrastructure, maintenance, delivery, and research are not cheap. You can't afford to do it. Shell has decided it can't, either.
Wrong. Here is how capitalism works:
A) You made it. You can use it, but if you sell it You'll have the money.
B) You made it. If you sell it today, you'll have money today, but not tomorrow. You need to make another one to sell it tomorrow to have money tomorrow too.
C) You made it. You can sell it, but if you rent it you'll have money today and tomorrow and day after tomorrow and so on... so why selling it?
I think Shell is moving From B to C as much modern production model with their biofuel / carbon sequestration. Also staying with biofuel means no surge investment in infrastructure, only gradual investing in carbon sequestration / biofuel production.
It did look like a piece of trash, but it was not micro sized. I was less than meter long while hanging on the power line, at least it seemed that long while I was looking at it form the ground. Somehow I resisted the urge to hit it with the rock, I knew what it was the first moment I saw it.
I saw it months before or after the article mentioned it, I can't remember now. It just reminds me how close US military base Camp Bondsteel is from my hometown.
So they meant US Air Force.
I have used all my hard drives under 2GB for routers/wireless nodes.
I keep my pass-phrases / passwords, encryption software on old thumb drives that have lock button. There is no other use I can think of today for a thumb drive of size 32-128MB today.
I have modified this project to make bike light that uses single 1.5V battery, four white LEDs in the front light and one red LED in the black connected in series. It can work on 1.2V Ni-MH battery too, it is cheap and easy to build. I have used E core transformer form broken mobile phone charger instead of ferrite bead. The next version I'll build will use single Li-Ion cell and will have integrated recharger.
No, I wanted to take it for the test drive before I pay for IT. / Yes, but the package referred to something else.
No. While looking at it, I had funny feeling that someone wants to enslave me and rob my family.
No, they want me to pay for the upgrade even if they had not stated that in the "EULA". / Yes, but if I click on nope the software will stop to work without any notice.
Dear Judge, I the defendant, want to state that:
I have NO OFFICIAL TRAINING IN ENGLISH LANGUAGE, AND NO OFFICIAL TRAINING IN COMPUTER MOUSE/TRACKBAL/GLIDE-PAD/WHATEVER USE, therefore I am UNABLE TO understand the difference between "I Agrre" and "I don't" or take any willing action.
The software installer that plaintiff refers to launched after I the defendant inserted the disc into the CD/DVD tray without any approval form me, the defendant.
The pop-up box asked about something called "Setup" and gave no information about it. What followed after gave no additional information about "Setup".
Here not present mister cat, played with "the mouse", also known as "the mice", and keyboard causing all sorts of strange behavior including sudden screen saver animation disruption, clicks and pops, and EULA pop-up which resulted in mentioned above "I Agree" and "I don't" buttons.
After several minutes of rather cruel action against device called "the mouse" by the plaintiff, here not present mister cat caused unwanted software installation, mentioned by the plaintiff as "the software installation".
Switching form 802.11g to 802.11b mode gains 6-7 dB in signal to noise ratio. I am quite pleased with 500-600 KB/s that I can use almost all the time.
It is common misconception that channels 1, 6 and 11 do not overlap. They do not overlap only if everyone keeps their EIRP in recommended limits and all network parties use directional antennas for their "client" side. If EIRP is not keept in recommended range background noise builds up and clients in crowded areas suffer form low signal to noise ratio. Good SNR is 30dB and more, 40dB and above is excelent.
If you get the chance to move out, consider getting a Passive House, where it has super-thick insulation and is hermetically sealed. You wouldn't have to worry about frozen pipes in that kind of setup.
That is great idea, but will not bite in US, at least not soon.
I've been reading posts form the top of the discussion, and most of them were about "male-male suicide cord", 500$ automatic transfer switch, wood furnace that needs electricity to work, how many MW generator needs to have to run the house and what kind of the fueling system is the best.
It seems taht people in US have no idea that wood furnace can be made to work without any electricity, and that it can heat up the pipes and make enough water flow to prevent pipes from bursting.
1kW blower fan? I heat my room on 1 kW. 500$ for relay switch and handful of circuit breakers? Is that a joke?
Idea: Gasoline powered generator converts less than 30% of fuel energy in to the electricity. The rest of energy is the heat, hot water than can save pipes from bursting if used in house heating cicuit.
Modification may require heat exchanger, some pipes and insulation, maybe an additional circulation pump. Advantages: Your generator is preheated and ready, heat from the generator heats the house, and you have electricity. Disadvantages: some heat will be lost trough the piping insulation and in the heat exchanger, your heating system becomes more complicated, messing with the generator equals no warranty.
Anyway, great idea, excellent post, enjoy the new year and Your score.