- #Parallel serial port adapter serial#
- #Parallel serial port adapter drivers#
- #Parallel serial port adapter driver#
- #Parallel serial port adapter software#
- #Parallel serial port adapter code#
#Parallel serial port adapter drivers#
In majority of cases this cannot be done, because as with most USB devices they are not assigned a memory address range and use drivers to communicate through the USB hub and controller of a device. If the port replicator produces a memory address (I/O range) and is assigned a DMA in device manager, which can be passed to the "SetupSysDriver.exe" file that is used by the Sentinel drivers to configure these drivers, then yes, such a device can be used. I found this information.Ĭan I use a parallel to USB port replicator to connect my parallel dongle to a USB port? I need to use a parallel dongle on a USB connection. I have the same issue with USB to parallel conversion. I might buy one of the USB2LPT devices shown on the website just to have a good parallel port adapter that might work for an EPROM burner or similar device. I may have just missed seeing the activity, but the fact that IO reads interfered with the operation of the dongle indicate that the communication is rather sensitive and it is probably not worthwhile to go further. I did some more work on this, and I wrote a program that monitors the data on the parallel port every 100 mSec, but I did not detect any activity, and it caused the program to "lose its connection" to the dongle. And they require you to be on maintenence to purchase a USB dongle to replace the parallel port version, and reinstatement involves payment of lapsed fees plus a 40% penalty, so after a while it is cheaper to buy a new "seat", or purchase a competitor's product. They are very responsive initially to service requests, but often postpone fixes to later releases and even then they are not fixed or they break something else.
#Parallel serial port adapter software#
It sounds like a lot but the software sells for several thousand dollars and wants about $800/year for maintenence and support, which includes updates to the latest revisions, which are often buggier than the previous ones. The starting price for one such service was about $500. There are some websites offering such services. I'll let you know if I have any further information. I sent an email to Jan Axelson, who wrote "USB Complete", and her reply indicated that the thread in pretty much covered the topic, and she suggested using other more direct solutions such as a plug-in adapter card on the computer bus. If not, then it may not be worth going any further. I might try purchasing a USB-Parallel converter and at least see if I get any activity on the port I/O lines when the dongle is being checked. The software that uses the dongle probably has its own driver, and I don't know if it can be fooled into using a USB-parallel converter. I think all such I/O passes through the Virtual Machine, but I don't know enough about it to see if it can be redirected. I don't know if there is a way to detect a read from or write to a hardware port address in Windows. So I might be trying to do the impossible. Also, there is a statement on the web page that non-hookable drivers, such as direct writes to hardware for parallel port dongles, will not emulate correctly. This looks like it could become a major project and I don't think I can spend the time right now to tackle it.
#Parallel serial port adapter code#
I found that web page very helpful, and I have just looked through the firmware code for the Atmel processor to see what it does and how I might port it over to the Microchip devices. There is a device called USBLPT-something that seems to be a development tool that uses the parallel port to create USB applications, but that is not what I want.Īny ideas or shared expererience with this would be appreciated.
#Parallel serial port adapter driver#
This will probably require a driver such as USBSER.sys, but I could not find a usbpar.sys or usblpt.sys. If this can be made to work, it would be a very useful device to a number of people who have dongle-protected software they would like to run on newer computers without legacy LPT ports. I think it uses a bit stream on the STROBE line of the port, which would be accessed by IOREAD and IOWRITE instructions to the port address. I have heard that the standard USB-Parallel adapters do not work because the dongle uses individual bit-banging to perform communication that verifies that the dongle is connected. The reason for this is to try to make a software protection dongle work on a computer with no on-board parallel port.
#Parallel serial port adapter serial#
I have done extensive searching and I came up with lots of commercial adapters for sale, and information on drivers to interface with the parallel port, but nothing specifically for having the USB device enumerate as a parallel (LPT) port, similar to the way a serial port device does (as I have done with my PICDEM USB). I would like to see if it is possible to build a USB to Parallel Port device, using Microchip PIC18F2450 or similar parts.
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