USB3 to LPT port - Page 1
Forum section: electronics / projects

author: perdrix
author_rank: Frequent Contributor
timestamp: May 13, 2022, 04:31:38 pm
content: Has anyone ever looked at implementing an updated version of Henrik Haftmann's USB2LPT that uses USB3 to speed and would allow parallel port EPROM burners to work?Yes I have kept an old lappie and docking station with a parallel port on the docking station that runs virtual machines (WinXp and Windows for Workgroups) to support these, but I fear it won't last forever.Hence my question ...The source code for the drivers seems to have limited capability for 64 bit Windows, and though I've done simple Windows device drivers, it may be a bit above my salary level to improve that.

author: kripton2035
author_rank: Super Contributor
timestamp: May 13, 2022, 05:04:19 pm
content: an usb2 external device plugged into an usb3 computer port should adapt to usb2 speed and work directly ?have you even tried to plug the device into an usb3 port ?

author: Bassman59
author_rank: Super Contributor
timestamp: May 13, 2022, 05:24:31 pm
content: Quote from: perdrix on May 13, 2022, 04:31:38 pmEvery USB-to-LPT adapter I've seen is designed talk to Centronics-type printer ports. They don't allow the bit-banging and other stuff you could do with a hardware EPP.

author: Miyuki
author_rank: Frequent Contributor
timestamp: May 13, 2022, 05:31:32 pm
content: Maybe I just miss somethingEvent the fastest ECP mode is like 2.5MB/sAnd EEPROM wite speed is in few kB/s rangeWhy would you need a faster USB for that?

author: Zoli
author_rank: Frequent Contributor
timestamp: May 13, 2022, 05:33:58 pm
content: Some new motherboards(like this) have hardware parallel and serial ports.Other(expensive) choice would behttps://nixsys.com/.

author: macboy
author_rank: Super Contributor
timestamp: May 14, 2022, 08:13:41 am
content: Did you read the FAQ?"Q2How fast is this USB2LPT for my application?AIt depends highly to USB frame rate, which itself depends on USB bus speed. But USB 3.0 does not increase frame rate to USB 2.0!"https://www-user.tu-chemnitz.de/~heha/basteln/PC/USB2LPT/faq.en.htm

author: Someone
author_rank: Super Contributor
timestamp: May 14, 2022, 10:52:24 am
content: .... thunderbolt

author: coromonadalix
author_rank: Super Contributor
timestamp: May 14, 2022, 01:44:42 pm
content: that's why you have to keep an old 32 bit sytem or a lappy with lpt and serial portA 64 bit kernel as more restrictions, tried this approach many time and had many crashes, unless you build yourself a rock solid driver lollAs you know the lpt port is kinda dead ... or use pci or pci-e to lpt port could extend some lifeusb3 wont give nothing / its basically uselessThe motherboard link could be useful, but it's a new build ...And to make old eeprom programmers on lpt port ....... ish let them rest, you will have to invest on USB types soon enough

author: Messtechniker
author_rank: Frequent Contributor
timestamp: May 14, 2022, 02:30:59 pm
content: USB to LPT may be difficult.A solution which works at least for printers in one direction is a LAN to LPT print server like the Longshine PS 112. Can be tricky to set up. But once it works it works

author: Bassman59
author_rank: Super Contributor
timestamp: May 15, 2022, 09:50:38 pm
content: Quote from: macboy on May 14, 2022, 08:13:41 amJust because a device conforms to the rev 3.0 of the USB spec, doesn't mean that it runs at 5 Gb/s.USB 3.0 added the capability for SuperSpeed (5 Gb/s), but a device can be designed to work at High Speed (480 Mb/s), Full Speed (12 Mb/s) or Low Speed (1.5 Mb/s) as desired.