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Kubuntu 7.10 c_source example compile problem
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ndudman



Joined: 25 Dec 2008
Posts: 79
Posted: 09 January 2009, 22:38 PM    Post subject: Reply with quote
Wow that was quick

I have normal serial on desktop, and usb only on laptop... also a serial->usb cable but it dosnt say what chipset it has inside. So will try both and report back or ask questions when the zx24n arrives.

Thanks again running direct on Linux is really great for me.

Neil
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dlh



Joined: 15 Dec 2006
Posts: 285
Location: ~Cincinnati
Posted: 09 January 2009, 22:40 PM    Post subject: Reply with quote
I have tested two of the least expensive solutions to the no serial port problems. ByteRunner has a $9 USB-serial adapter...and an $18 dual serial port PCI card...Both work fine under all of my Linux systems.

Im haven't tested downloading under Linux but can toggle DTR to reset the ZX. Downloading under Windows is fine with the USB adapter. I haven't tested the PCI card for downloading.
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ndudman



Joined: 25 Dec 2008
Posts: 79
Posted: 12 January 2009, 14:17 PM    Post subject: Reply with quote
Hi

Good news... it works Smile I get hello worrld, and red/green flashing lights....

The zx24n came this morning and Ive just finished connecting everything up... Im using an uknown usb -> serial and then a serials cable with one end removed and plugged directly into bread board... and it works... I had to execute the following line to make com2 accessable for zbasic
Code:
ln -s /dev/ttyUSB0 ~/.wine/dosdevices/com2


But am, to say the least very pleased...Is there anything else i can confirm before I try and write another program to the device ?

Regards
Neil
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ndudman



Joined: 25 Dec 2008
Posts: 79
Posted: 12 January 2009, 20:36 PM    Post subject: Reply with quote
Perhaps I was just luck having it working with the usb cable on the laptop... as its now NOT working, although I can reset the device via the zbasic IDE it wont identify the device or print debug logs... I thought it was a hardware problem... so installed everything on the desktop... with normal serial port, and it worked straight away.

Im confused, but will keep trying with both, but rely upon the normal serial cable. Im guessing its a speed issure... i.e the usb isnt fast enough or relyable enough perhaps ?

Neil
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dlh



Joined: 15 Dec 2006
Posts: 285
Location: ~Cincinnati
Posted: 12 January 2009, 21:45 PM    Post subject: Reply with quote
Despite the higher speed of the USB bus, USB-serial is slower than RS232 because of the need for translations on both ends.
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