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Junior Member
Does anyone know a diagnostic that will test all functions of a parallel port?
Tufftest talks a good game on their website, but they do not explicitly say they test everything the port can do.
Jay Lowe wrote a manual for Parallel, Parallel Technologies' freeware tool, back in 1993 that implies much testing, but the program uses a loopback with only pins 9 and 10 connected together. I'm not sure shorting only 9 and 10 is enough to prove the protocol. Tufftest uses a loopback with several pins connected together. (Lowe's writeup is really informative. I forget where I found it, but I Googled
" parallel port diagnostic " without the quotes.)
(Aside: My Brother 1440 laser printer works fine with my W95 laptop's ECP port, and I can print to it with my XP desktop's port set to SPP, but in ECP mode it won't print, and the Brother diagnostic says the port is not available.)
Tufftest talks a good game on their website, but they do not explicitly say they test everything the port can do.
Jay Lowe wrote a manual for Parallel, Parallel Technologies' freeware tool, back in 1993 that implies much testing, but the program uses a loopback with only pins 9 and 10 connected together. I'm not sure shorting only 9 and 10 is enough to prove the protocol. Tufftest uses a loopback with several pins connected together. (Lowe's writeup is really informative. I forget where I found it, but I Googled
" parallel port diagnostic " without the quotes.)
(Aside: My Brother 1440 laser printer works fine with my W95 laptop's ECP port, and I can print to it with my XP desktop's port set to SPP, but in ECP mode it won't print, and the Brother diagnostic says the port is not available.)
