Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: BarryB on March 13, 2010, 04:59:38 PM
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Hey folks, I'm trying to get a 2nd parallel port installed to work with Mach 3 and the C23 board I have installed. I was having trouble with the smoothstepper so, I decided to go this route instead.
I'm using the Rosewill card (which is the one that works according to our board), which has a 9835 chipset. This card has two parallel ports. I've downloaded the driver, installed fine, and it is being shown in the device manager as LPT2 and LPT3. The addresses are:
LPT2
C400
C000
LPT3
CC00
C800
Onboard LTP1
0378
0778
I can get the LPT 3 to appear just fine as port 1 within Mach using CC00. I can't get anything to work for port 2, even the onboard LTP1. I know that port does work though, as it was with the smooth stepper. Now that I'm trying to use parallel ports on a desktop machine, instead of the smooth stepper on my laptop, I'm running into this problem. Any ideas? I'm at my wits end here. I built this PC just for this purpose!
Barry
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Not sure I understand this part
I know that port does work though, as it was with the smooth stepper.
The SS doesnt use a parallel port.
What are you trying to set up on Port2 and which pins?
Hood
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Yes, I know the SS is USB. Originally I was using the SS with a USB port;)
I stopped because it would lose connection after a couple hours. I'm attempting to use parallel ports instead. I'm attempting to use the exact same setup, except with parallel ports, same pins, etc. It's not a pin assignment issue, as this WILL work with the smooth stepper. The issue, is that a 2nd parallel port isn't seen inside Mach3, no matter the port addresses I'm giving it.
Barry
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What pins are you trying to use and for what (inputs or outputs)
Hood
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is it me or are those address ranges weird? shouldn't all range over a few bytes and be ascending. These ranges are massive (interestingly they're all 0x400 byte ranges!) and lpt2 and 3 are descending... for example I'd expect 0x378 to 0x37F for your LPT1.
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Those numbers aren't ranges. They are the first address in a range. Each parallel port had two ranges listed in the device manager. The first number in the range is what you put in Mach, so that's all I listed. Sorry for the confusion. An interesting result is originally I bought the ss to work on a laptop, which I have gotten it to work perfectly there. I can mill all day and then some. The trouble I'm having in on a desktop, which is so strange to me. Anyway, I've spent so much time on this issue, I think I'm going to just upgrade to another laptop and retire this one to the shop, to run Mach. It seems overkill, but I know this combo works.
Barry