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Questions tagged [ps2]

PS/2 is the old-style connector and protocol used for connecting a keyboard and mouse to a PC.

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How to connect a microcontroller to PS/2 port as the PS/2-keyboard?

The voltage of output signals of my CPLD MAX II board is 3 volts. Can I connect this board to open collector of PS/2 motherboard-MCU? So, if I want to send a "zero" signal, I'm sending "one" to the ...
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VC707 Eval Board - Synthesis/DRC issues during implementaion of a Microblaze Based PS2 Controller

The following is the top level module of a VC707 based Microblaze/PS2 controller. I have connected a FMC-CE GPIO Daughter Card to the FMC1 Connector on the FPGA and a PMOD-PS2 on the 6 pin GPIO ...
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PS/2 mouse / keyboard interface info and classification

My hardware interfaces teacher in the university gave a task to find info about PS/2 interface and fit it into a classification by answering a list of questions. Here's what I've found: Which type ...
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1answer
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Repairing a PS/2 mini-DIN connection w/o clock pulses

I have a Fanatec CSR racing wheel with an optional sequential shifter. Since I last used them I lost the stock PS/2 cable and haven't been able to locate it. I bought an off-the-shelf PS/2 cable but ...
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200 views

How to deal with PS/2 keyboard input and CPU interrupts

First of all, I'm not sure if this is the right place to ask this question or not. It was either here or the Computer Science stack exchange site, but I thought perhaps it would be better posted here ...
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820 views

Is the communication between the USB or PS/2 keyboard and the computer simplex, duplex or half-duplex (unidirectional or bidirectional)?

I am curious to know if the communication between the computer and keyboards is unidirectional or bidirectinal. Until a few days ago i thought the communication is unidirectional because only the ...
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1answer
182 views

Should the clock from a PS/2 keyboard be used in a Verilog always block?

I'm trying to get a Verilog design for interfacing with a PS/2 keyboard to work but I'm having very strange issues. I have a fairly simple always block which controls everything: ...
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280 views

in host to device communication protocol, what does high and low mean?

I'm trying to learn about the PS/2 protocol from here. At about 4:00 he talks about low and high values. This part is to let the host send data to the device but the clock should come from the device....
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1answer
322 views

Convert ps/2 to usb using ttl to usb converter [closed]

I have an old keyboard that has ps/2 interface. I have a ttl(V G tx rx) to usb converter too. Can i use this converter to connecting my keyboard to USB port? What about RS232/RS485 to USB converter? ...
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1answer
6k views

How to make your own ps/2 to usb convertor for old keyboards

I am quite aware you can get ready made off the shelf adaptors to connect old ps/2 keyboards to USB. But I am curious as how would one do it themselves? I have tried just rewiring an old keyboard to a ...
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1answer
303 views

How can I convert a VGA signal to work with an old CRT monitor

I'm wondering if it's possible to convert a VGA signal to use as an input to an old CRT monitor (which I believe is monochrome), and if so how I'd go about doing this? The monitor has a 6 pin DIN ...
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1answer
57 views

Cpu and ps2 keyboard communication

Ok, lets's try again, it's surprising that it is hard to find a clear and sharp enough way to ask such a question. How is PS2 keyboard data usually decoded to ASCII in hardware level, and then how is ...
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1answer
400 views

PS2 or USB keyboard for custom CPU

I have made a CPU on an FPGA board. It works great but I cannot proceed to make a computer with it until I have an input. What use is a computer if it can talk to you, but you cannot talk to it? It ...
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2answers
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PS2 / SMBus communication

I have an OEM touchpad I want to connect to a PC. The drivers for this touchpad are widely available. I asked the manufacturer for the original datasheet, and it says there, that the touchpad ...
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1answer
1k views

USB mouse with a PS/2 adapter for FPGA PS/2 interface

I'm designing a PS/2 mouse interface for BASYS 2 FPGA board. As you might know to communicate with a PS/2 mouse you need a protocol, so if I write my VHDL program for the PS/2 protocol and then ...
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How do I read the Wires from a 180 DIN with an Arduino's analog ports to read Nintendo Controller?

I have a USB Super Nintendo controller. I'm attempting to read the buttons with an Arduino Uno. I found a suggestion to utilize a USB too Ps/2 adapter. I've done that then I found a Serial ps/2 to 180 ...
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2answers
871 views

Using the PS/2 port of the Papilio One FPGA from VHDL

I'm trying to receive data from a keyboard via the PS/2 port on the Papilio One Arcade Megawing. Eventually I'll want to implement this from scratch, but I thought I'd get some public code working ...
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1answer
844 views

How to write VHDL program to send command to PS2 device [closed]

I'm using Quartus II 13.0sp1, DE1 Board for testing, and Cyclone II FPGA EP2C20F484C7N. I need to write program in VHDL that sends command to device. I have already created entity and architecture ...
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1answer
2k views

Interfacing PS/2 Keyboard to 3.3V inputs

I have had wonderful success with my new Mojo FPGA, so I decided to try something more difficult, interfacing with a PS/2 keyboard, but I cannot get it to work. Of course, I took the proper ...
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1answer
945 views

Use an active PS/2 -> USB adapter as USB-Serial Bridge

I'm working on a small robotics project where I need to enable my old phone (Nokia 5230, shows up as USB Serial port on Windows but USB cable is straight-through) to talk to an Arduino UNO R3 (doesn't ...
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1answer
1k views

Raspberry Pi minimum sleep time

I managed to connect an old PS/2 keyboard to the GPIO pins of my Raspberry Pi. I do get correct data from the keyboard which means when I press 'A' on the keyboard I get 'A' in my C code. The big ...
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1answer
100 views

PS/2 info search

Could you please help me find information about PS/2 protocol? I am currently writing a topic for an exam, it is about serial buses. What I need is to be able to create a suitable circuit to connect ...