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#1
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PS/2 Keyboard USB?
Looks like an adapter to allow me to connect my PS/2 keyboard to a
desktop is no trivial thing. $10 plus seems a little dear to me. Is there no cheaper way to go? Maybe not. Thanks Grumpy |
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PS/2 Keyboard USB?
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#3
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PS/2 Keyboard USB?
wrote:
Looks like an adapter to allow me to connect my PS/2 keyboard to a desktop is no trivial thing. $10 plus seems a little dear to me. Is there no cheaper way to go? Maybe not. Thanks Grumpy This adapter is passive, and there's nothing inside the plastic connector body, but connector pins. But these adapters only work on "dual personality" hardware. My Logitech mouse supports both PS/2 and USB protocols - and all it takes is this adapter, to adapt to a different computer connector. The mouse works the magic, not the adapter. The adapter just gets my mouse connected to a different set of pins. At power up, the mouse can sense the difference between the two interfaces. http://www.newegg.com/Product/Produc...82E16812200272 ******* But you're probably referring to one of these. These have a Chesen chip inside. The Chesen chip is actually an 8 bit microprocessor, complete with firmware and RAM. All for the purposes of protocol conversion. It's well worth the $10. After all, the cable has three connectors on it, so even the connectors add a bit to the price, and that doesn't leave much money to pay for the processor inside the white blob. http://images17.newegg.com/is/image/newegg/12-119-237-Z02?$S300W$ When you get the PCI card version, it's easier to see the Chesen chip in there. On this example PCI card, the big chip on the right, does PCI to USB2. The chip nearest the faceplate, is the Chesen processor that does dual PS/2 to USB. So two chips are needed in total, to go from PCI to PS/2. http://images10.newegg.com/NeweggIma...124-045-06.jpg The Chesen CSC0101A-S16 chip on the left is a bit clearer here. http://images10.newegg.com/NeweggIma...124-045-03.jpg This is a block diagram, for the processor chip. Apparently, it's out of production now, so if you need a dual PS/2 to USB, buy it now! Inside is a 65C02 processor. The SCLK1/SDATA1 and SCLK2/SDATA2 pins are for the PS/2 keyboard and mouse, clock and data interface. http://ts1.mm.bing.net/th?id=H.47308...91272&pid=15.1 The firmware on the Chesen chip, changed with time. The very first chips to be released, there was a bug where the converter would "freeze up" after about ten minutes. The version that was for sale maybe a year later, seemed to fix that. Always read the customer reviews, to see if the product is still worthy. Paul |
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PS/2 Keyboard USB?
" wrote:
Looks like an adapter to allow me to connect my PS/2 keyboard to a desktop is no trivial thing. $10 plus seems a little dear to me. Is there no cheaper way to go? Maybe not. Same question in this group 3 months ago: https://groups.google.com/forum/?fro...re/4jz8N6LINPQ |
#6
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PS/2 Keyboard USB?
On Sat, 09 Mar 2013 01:18:39 -0600, Grinder
wrote: I am pretty sure that only PS/2 keyboards that are *made* to be able to work with (usb-)adapters work with these things. And then probably they work only with their own usb-adapters,often delivered with the PS/2 mobo (like those of Logitech) and seldom sold separately . Massimo There are active and passive adapters. I believe you're correct if you're talking about passive adapters, that look like this: http://img.tomshardware.com/us/2005/...01/ps2_usb.jpg I have a couple of these, and they do not work with the PS/2 keyboards I have. Active adapters are meant to work with any PS/2 keyboard and/or mouse: http://www.monoprice.com/products/su...s_id=10404 01 At least the prices on this site beat the prices I found and did not like. Of course, that's no guarantee they'll work with any given peripheral, but I've had luck with them. Thank you Grumpy |
#7
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PS/2 Keyboard USB?
On Fri, 8 Mar 2013 19:52:52 -0600, VanguardLH wrote:
Same question in this group 3 months ago: https://groups.google.com/forum/?fro...re/4jz8N6LINPQ Ur rite. I dint c it. Sory Grumpy :) |
#8
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PS/2 Keyboard USB?
wrote:
On Fri, 8 Mar 2013 19:52:52 -0600, VanguardLH wrote: Same question in this group 3 months ago: https://groups.google.com/forum/?fro...re/4jz8N6LINPQ Ur rite. I dint c it. Sory Grumpy :) It wasn't to berate you for not looking, just to eliminate reposting the entire old discussion and the info therein. |
#9
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PS/2 Keyboard USB?
On Sat, 9 Mar 2013 07:44:39 -0600, VanguardLH wrote:
It wasn't to berate you for not looking, just to eliminate reposting the entire old discussion and the info therein. You are right tho. I should have looked. I was just upset over what looks like too much money for me to adapt a couple of ps/2 keyboards. Thanks Grumpy |
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