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#1
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What am I doing wrong?
I am trying to fire up this W7 PC to eventually use on a PS/2 KVM. The
PC has only one PS/2 connection (plus a few USBs of course). I want to use a keyboard and a mouse which both are PS/2. I tried using both the keyboard and mouse one at a time and both work during bootup. So they both seem to work. Even in W7 altho still only one at a time. I have to make things work with both mouse and keyboard connect of course. I then tried using both connected to a Y connector which changes the connections to the single PC USB input connection. Both mouse and keyboard still work during boot. However, when I get to W7, neither work. Funny, since both work when alone. Even when using the Y connector. So the mouse, keyboard, Y connector, and PC USB port all seem to be good individually, but not together, which I seem to need. aarrrggghhhhh! ??? I hope someone can tell me what to try. Al |
#3
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What am I doing wrong?
On Sun, 9 Dec 2018 11:39:39 -0500, John McGaw wrote:
On 12/9/2018 10:43 AM, wrote: I am trying to fire up this W7 PC to eventually use on a PS/2 KVM. The PC has only one PS/2 connection (plus a few USBs of course). I want to use a keyboard and a mouse which both are PS/2. I tried using both the keyboard and mouse one at a time and both work during bootup. So they both seem to work. Even in W7 altho still only one at a time. I have to make things work with both mouse and keyboard connect of course. I then tried using both connected to a Y connector which changes the connections to the single PC USB input connection. Both mouse and keyboard still work during boot. However, when I get to W7, neither work. Funny, since both work when alone. Even when using the Y connector. So the mouse, keyboard, Y connector, and PC USB port all seem to be good individually, but not together, which I seem to need. aarrrggghhhhh! ??? I hope someone can tell me what to try. Al No guarantees: https://www.amazon.com/StarTech-Keyb...dp/B000067SLZ/ There are cheaper alternatives availlble. That looks like mine except the white end on my 'y' is USB. Are you saying that reducing the keyboard and mouse PS/2 connectors down to one PC/2 connector will work when mine won't? That wud mean the problem is in the conversion from PS/2 to USB wouldn't it? Al |
#4
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What am I doing wrong?
wrote:
On Sun, 9 Dec 2018 11:39:39 -0500, John McGaw wrote: On 12/9/2018 10:43 AM, wrote: I am trying to fire up this W7 PC to eventually use on a PS/2 KVM. The PC has only one PS/2 connection (plus a few USBs of course). I want to use a keyboard and a mouse which both are PS/2. I tried using both the keyboard and mouse one at a time and both work during bootup. So they both seem to work. Even in W7 altho still only one at a time. I have to make things work with both mouse and keyboard connect of course. I then tried using both connected to a Y connector which changes the connections to the single PC USB input connection. Both mouse and keyboard still work during boot. However, when I get to W7, neither work. Funny, since both work when alone. Even when using the Y connector. So the mouse, keyboard, Y connector, and PC USB port all seem to be good individually, but not together, which I seem to need. aarrrggghhhhh! ??? I hope someone can tell me what to try. Al No guarantees: https://www.amazon.com/StarTech-Keyb...dp/B000067SLZ/ There are cheaper alternatives availlble. That looks like mine except the white end on my 'y' is USB. Are you saying that reducing the keyboard and mouse PS/2 connectors down to one PC/2 connector will work when mine won't? That wud mean the problem is in the conversion from PS/2 to USB wouldn't it? Al There are two adapters. John is showing your the PS/2 splitter. It's passive and just a rewiring job in effect. The PS/2 on your PC, has enough wires on it to run two connectors... if that's how they wired it on the motherboard. If the motherboard end isn't the right type, the PS/2 splitter only works on one port. The mouse CLK/DATA are wired to one connector, the keyboard CLK/DATA are wired to the second connector. Power and GND are wired as you would expect. PS/2 (6 pins) -------- PS/2 4 pins get wired as normal \________ PS/2 4 pins get wired as normal There is a tiny reference in the comments of the pinout diagram here. It tells you how the motherboard end can be using all six pins, to house two interface sets. https://en.wikipedia.org/wiki/PS/2_port Pin 1 +DATA Data Pin 2 Not connected [b] Pin 3 GND Ground Pin 4 Vcc +5 V DC at 275 mA Pin 5 +CLK Clock Pin 6 Not connected [c] [b] Sometimes, keyboard Data for splitter cable [c] Sometimes, keyboard Clock for splitter cable ******* The other kind of adapter for PCs, is an active adapter that converts a USB port to two PS/2 ports. USB ------- 8 bit micro ----------- PS/2 mouse inside plastic ------ PS/2 keyboard blob Those rely on a fixed firmware the 8 bit micro runs, to convert PS/2 serial protocol, into USB packets. Usually on the order of $10 to $12 or so. At one point, that micro went out of production, so it's hard to say which chip they use today. Paul |
#5
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What am I doing wrong?
On Sun, 09 Dec 2018 15:26:48 -0500, Paul
wrote: wrote: On Sun, 9 Dec 2018 11:39:39 -0500, John McGaw wrote: On 12/9/2018 10:43 AM, wrote: I am trying to fire up this W7 PC to eventually use on a PS/2 KVM. The PC has only one PS/2 connection (plus a few USBs of course). I want to use a keyboard and a mouse which both are PS/2. I tried using both the keyboard and mouse one at a time and both work during bootup. So they both seem to work. Even in W7 altho still only one at a time. I have to make things work with both mouse and keyboard connect of course. I then tried using both connected to a Y connector which changes the connections to the single PC USB input connection. Both mouse and keyboard still work during boot. However, when I get to W7, neither work. Funny, since both work when alone. Even when using the Y connector. So the mouse, keyboard, Y connector, and PC USB port all seem to be good individually, but not together, which I seem to need. aarrrggghhhhh! ??? I hope someone can tell me what to try. Al No guarantees: https://www.amazon.com/StarTech-Keyb...dp/B000067SLZ/ There are cheaper alternatives availlble. That looks like mine except the white end on my 'y' is USB. Are you saying that reducing the keyboard and mouse PS/2 connectors down to one PC/2 connector will work when mine won't? That wud mean the problem is in the conversion from PS/2 to USB wouldn't it? Al There are two adapters. John is showing your the PS/2 splitter. It's passive and just a rewiring job in effect. The PS/2 on your PC, has enough wires on it to run two connectors... if that's how they wired it on the motherboard. If the motherboard end isn't the right type, the PS/2 splitter only works on one port. The mouse CLK/DATA are wired to one connector, the keyboard CLK/DATA are wired to the second connector. Power and GND are wired as you would expect. PS/2 (6 pins) -------- PS/2 4 pins get wired as normal \________ PS/2 4 pins get wired as normal There is a tiny reference in the comments of the pinout diagram here. It tells you how the motherboard end can be using all six pins, to house two interface sets. https://en.wikipedia.org/wiki/PS/2_port Pin 1 +DATA Data Pin 2 Not connected [b] Pin 3 GND Ground Pin 4 Vcc +5 V DC at 275 mA Pin 5 +CLK Clock Pin 6 Not connected [c] [b] Sometimes, keyboard Data for splitter cable [c] Sometimes, keyboard Clock for splitter cable ******* The other kind of adapter for PCs, is an active adapter that converts a USB port to two PS/2 ports. USB ------- 8 bit micro ----------- PS/2 mouse inside plastic ------ PS/2 keyboard blob Those rely on a fixed firmware the 8 bit micro runs, to convert PS/2 serial protocol, into USB packets. Usually on the order of $10 to $12 or so. At one point, that micro went out of production, so it's hard to say which chip they use today. Paul Thanks for your input. I have researched PS/2 to USB converters and have been scared away. I wanted to use my ATEN CS-114A KVM which is PS/2 for my multiple PCs but they lack PS/2 ports. I had thought converting PS/2 to USB would be simple, but I guess not. What to do what to do. Al |
#6
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What am I doing wrong?
wrote:
On Sun, 09 Dec 2018 15:26:48 -0500, Paul wrote: wrote: On Sun, 9 Dec 2018 11:39:39 -0500, John McGaw wrote: On 12/9/2018 10:43 AM, wrote: I am trying to fire up this W7 PC to eventually use on a PS/2 KVM. The PC has only one PS/2 connection (plus a few USBs of course). I want to use a keyboard and a mouse which both are PS/2. I tried using both the keyboard and mouse one at a time and both work during bootup. So they both seem to work. Even in W7 altho still only one at a time. I have to make things work with both mouse and keyboard connect of course. I then tried using both connected to a Y connector which changes the connections to the single PC USB input connection. Both mouse and keyboard still work during boot. However, when I get to W7, neither work. Funny, since both work when alone. Even when using the Y connector. So the mouse, keyboard, Y connector, and PC USB port all seem to be good individually, but not together, which I seem to need. aarrrggghhhhh! ??? I hope someone can tell me what to try. Al No guarantees: https://www.amazon.com/StarTech-Keyb...dp/B000067SLZ/ There are cheaper alternatives availlble. That looks like mine except the white end on my 'y' is USB. Are you saying that reducing the keyboard and mouse PS/2 connectors down to one PC/2 connector will work when mine won't? That wud mean the problem is in the conversion from PS/2 to USB wouldn't it? Al There are two adapters. John is showing your the PS/2 splitter. It's passive and just a rewiring job in effect. The PS/2 on your PC, has enough wires on it to run two connectors... if that's how they wired it on the motherboard. If the motherboard end isn't the right type, the PS/2 splitter only works on one port. The mouse CLK/DATA are wired to one connector, the keyboard CLK/DATA are wired to the second connector. Power and GND are wired as you would expect. PS/2 (6 pins) -------- PS/2 4 pins get wired as normal \________ PS/2 4 pins get wired as normal There is a tiny reference in the comments of the pinout diagram here. It tells you how the motherboard end can be using all six pins, to house two interface sets. https://en.wikipedia.org/wiki/PS/2_port Pin 1 +DATA Data Pin 2 Not connected [b] Pin 3 GND Ground Pin 4 Vcc +5 V DC at 275 mA Pin 5 +CLK Clock Pin 6 Not connected [c] [b] Sometimes, keyboard Data for splitter cable [c] Sometimes, keyboard Clock for splitter cable ******* The other kind of adapter for PCs, is an active adapter that converts a USB port to two PS/2 ports. USB ------- 8 bit micro ----------- PS/2 mouse inside plastic ------ PS/2 keyboard blob Those rely on a fixed firmware the 8 bit micro runs, to convert PS/2 serial protocol, into USB packets. Usually on the order of $10 to $12 or so. At one point, that micro went out of production, so it's hard to say which chip they use today. Paul Thanks for your input. I have researched PS/2 to USB converters and have been scared away. I wanted to use my ATEN CS-114A KVM which is PS/2 for my multiple PCs but they lack PS/2 ports. I had thought converting PS/2 to USB would be simple, but I guess not. What to do what to do. Al If you have the bi-color green/purple PS/2 connector on the motherboard end, try the passive "PS/2 to two PS/2" adapter. Like John suggested. Throwing the active USB to dual PS/2 into the mix, with a KVM, is just asking for trouble, since you'll be attempting to send in-band hotkey combinations, and those little active adapters might present an issue. The active adapter is an "unknown quantity" in any case, as you're relying on the firmware to do just the right thing, with any possible keyboard input. There's no way to know how good of a job they did. Since the PS/2 to dual PS/2 adapter is passive, there are no more "conversions" in the path, than is normal. Those adapters are just wires, no chips. If the passive adapter doesn't work, you're out $10. And the active adapter at that point, looks no more of a positive than before. It would still be another $10 crap-shoot. If you have the bi-colored PS/2, I'd try the passive. (I really like PS/2, because it's always worked for me. It has a track record that is hard to match with the more high tech stuff.) Paul |
#7
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What am I doing wrong?
Turing wrote:
John McGaw wrote: Turing wrote: I am trying to fire up this W7 PC to eventually use on a PS/2 KVM. The PC has only one PS/2 connection (plus a few USBs of course). I want to use a keyboard and a mouse which both are PS/2. I tried using both the keyboard and mouse one at a time and both work during bootup. So they both seem to work. Even in W7 altho still only one at a time. I have to make things work with both mouse and keyboard connect of course. I then tried using both connected to a Y connector which changes the connections to the single PC USB input connection. Both mouse and keyboard still work during boot. However, when I get to W7, neither work. Funny, since both work when alone. Even when using the Y connector. So the mouse, keyboard, Y connector, and PC USB port all seem to be good individually, but not together, which I seem to need. No guarantees: https://www.amazon.com/StarTech-Keyb...dp/B000067SLZ/ There are cheaper alternatives availlble. That looks like mine except the white end on my 'y' is USB. Are you saying that reducing the keyboard and mouse PS/2 connectors down to one PC/2 connector will work when mine won't? That wud mean the problem is in the conversion from PS/2 to USB wouldn't it? When converting between hardware protocols (USB and PS/2), you need an *active* adapter, not just a bunch of wires. For some keyboards, they do the conversion inside them; that is, they have the hardware protocol conversion logic. Lots of keyboards do not as they as designed solely for USB or PS/2 but not both. Did your USB keyboard come with a PS/2 adapter? No, not did you find or buy one separately and try to use with the keyboard but instead did the keyboard come packaged with its own USB-to-PS/2 adapter? That would indicate (but not guarantee) the keyboard contains the hardware protocol conversion logic. Keyboard can come in the PS/2-only variety, USB-only, or USB-PS/2. It depends on the logic inside the keyboard. You did not mention your brand and model of keyboard. What brand and model of keyboard do you have? If it has a USB end on its cord, and unless you specifically looked for a USB-PS/2 keyboard, it is highly likely to be USB-only. To connect to the PS/2 port on your computer, you need: - PS/2-only keyboard (and mouse). - USB-PS/2 keyboard and use its USB-to-PS/2 adapter. - USB-only keyboard and an active USB-to-PS/2 adapter to convert hardware protocols (USB to PS/2). The Y-adapter that Paul mentioned is just splitting the wires from a PS/2 port to a couple of PS/2 ends. No hardware protocol conversion is required because both ends are PS/2. Some examples of an active USB-to-PS/2 adapter a https://www.amazon.com/s/ref=nb_sb_n...ps%2F2+adapter |
#8
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What am I doing wrong?
On Sun, 9 Dec 2018 17:09:52 -0600, VanguardLH wrote:
Turing wrote: John McGaw wrote: Turing wrote: I am trying to fire up this W7 PC to eventually use on a PS/2 KVM. The PC has only one PS/2 connection (plus a few USBs of course). I want to use a keyboard and a mouse which both are PS/2. I tried using both the keyboard and mouse one at a time and both work during bootup. So they both seem to work. Even in W7 altho still only one at a time. I have to make things work with both mouse and keyboard connect of course. I then tried using both connected to a Y connector which changes the connections to the single PC USB input connection. Both mouse and keyboard still work during boot. However, when I get to W7, neither work. Funny, since both work when alone. Even when using the Y connector. So the mouse, keyboard, Y connector, and PC USB port all seem to be good individually, but not together, which I seem to need. No guarantees: https://www.amazon.com/StarTech-Keyb...dp/B000067SLZ/ There are cheaper alternatives availlble. That looks like mine except the white end on my 'y' is USB. Are you saying that reducing the keyboard and mouse PS/2 connectors down to one PC/2 connector will work when mine won't? That wud mean the problem is in the conversion from PS/2 to USB wouldn't it? When converting between hardware protocols (USB and PS/2), you need an *active* adapter, not just a bunch of wires. For some keyboards, they do the conversion inside them; that is, they have the hardware protocol conversion logic. Lots of keyboards do not as they as designed solely for USB or PS/2 but not both. Did your USB keyboard come with a PS/2 adapter? No, not did you find or buy one separately and try to use with the keyboard but instead did the keyboard come packaged with its own USB-to-PS/2 adapter? That would indicate (but not guarantee) the keyboard contains the hardware protocol conversion logic. Keyboard can come in the PS/2-only variety, USB-only, or USB-PS/2. It depends on the logic inside the keyboard. You did not mention your brand and model of keyboard. What brand and model of keyboard do you have? If it has a USB end on its cord, and unless you specifically looked for a USB-PS/2 keyboard, it is highly likely to be USB-only. To connect to the PS/2 port on your computer, you need: - PS/2-only keyboard (and mouse). - USB-PS/2 keyboard and use its USB-to-PS/2 adapter. - USB-only keyboard and an active USB-to-PS/2 adapter to convert hardware protocols (USB to PS/2). The Y-adapter that Paul mentioned is just splitting the wires from a PS/2 port to a couple of PS/2 ends. No hardware protocol conversion is required because both ends are PS/2. Some examples of an active USB-to-PS/2 adapter a https://www.amazon.com/s/ref=nb_sb_n...ps%2F2+adapter wow thanx for the insight. Al |
#9
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What am I doing wrong?
On Sun, 09 Dec 2018 20:06:51 -0500, wrote:
On Sun, 9 Dec 2018 17:09:52 -0600, VanguardLH wrote: Turing wrote: John McGaw wrote: Turing wrote: I am trying to fire up this W7 PC to eventually use on a PS/2 KVM. The PC has only one PS/2 connection (plus a few USBs of course). I want to use a keyboard and a mouse which both are PS/2. I tried using both the keyboard and mouse one at a time and both work during bootup. So they both seem to work. Even in W7 altho still only one at a time. I have to make things work with both mouse and keyboard connect of course. I then tried using both connected to a Y connector which changes the connections to the single PC USB input connection. Both mouse and keyboard still work during boot. However, when I get to W7, neither work. Funny, since both work when alone. Even when using the Y connector. So the mouse, keyboard, Y connector, and PC USB port all seem to be good individually, but not together, which I seem to need. No guarantees: https://www.amazon.com/StarTech-Keyb...dp/B000067SLZ/ There are cheaper alternatives availlble. That looks like mine except the white end on my 'y' is USB. Are you saying that reducing the keyboard and mouse PS/2 connectors down to one PC/2 connector will work when mine won't? That wud mean the problem is in the conversion from PS/2 to USB wouldn't it? When converting between hardware protocols (USB and PS/2), you need an *active* adapter, not just a bunch of wires. For some keyboards, they do the conversion inside them; that is, they have the hardware protocol conversion logic. Lots of keyboards do not as they as designed solely for USB or PS/2 but not both. Did your USB keyboard come with a PS/2 adapter? No, not did you find or buy one separately and try to use with the keyboard but instead did the keyboard come packaged with its own USB-to-PS/2 adapter? That would indicate (but not guarantee) the keyboard contains the hardware protocol conversion logic. Keyboard can come in the PS/2-only variety, USB-only, or USB-PS/2. It depends on the logic inside the keyboard. You did not mention your brand and model of keyboard. What brand and model of keyboard do you have? If it has a USB end on its cord, and unless you specifically looked for a USB-PS/2 keyboard, it is highly likely to be USB-only. To connect to the PS/2 port on your computer, you need: - PS/2-only keyboard (and mouse). - USB-PS/2 keyboard and use its USB-to-PS/2 adapter. - USB-only keyboard and an active USB-to-PS/2 adapter to convert hardware protocols (USB to PS/2). The Y-adapter that Paul mentioned is just splitting the wires from a PS/2 port to a couple of PS/2 ends. No hardware protocol conversion is required because both ends are PS/2. Some examples of an active USB-to-PS/2 adapter a https://www.amazon.com/s/ref=nb_sb_n...ps%2F2+adapter wow thanx for the insight. Al My Y-splitter is only labled wih a hard to read 'USB TO PS2' and has one end wiith USB and the other end with two PS2s (purple & green). It has a 'box' in the middle wherein the 'split' occurs. Does presence of a 'box' mean it is active? Probably not, or is that how I can tell it is 'active'? How does one tell the differeence? Think I can use it to try to go PS2 to USB? Just wondering. IOW, are these things reversible? I look at your suggested URL and see Y's with and without a 'box'. And I thought this was going to be simple! I have a PS/2 (ATEN CS-114A) KVM, and one PC with no PS2 ports, just several USBs, and one PC with one green PS2 port and several USBs. Maybe I can't make this combo work? What do you think? Thanks Al |
#10
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What am I doing wrong? (more)
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