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Old 12-22-2006, 12:26 PM   #16
charleykadet
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I tell you that because LPT is an old protocol.. It was devel on i386 (the real 386!!) now cpu aren't 1mhz but 3000 times faster! I just think that if you take a printer USB you will never have this problem because with the time.. new protocol were more compatible between linux and windows. I don't think you printer was kill by linux... it's maybe just a bug in the firmware but I don't know how to update a firmware if LPT doesn't work.
 
Old 12-22-2006, 05:22 PM   #17
Electro
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To temporally add an option at boot time using GRUB as the boot loader:
1) Use arrow keys to select what OS to boot, but do not hit enter.
2) Press e, to go into edit mode.
3) Select the line that has word kernel.
4) Press e, to edit that line.
5) Go at the end of the line and add the option.
6) Pres ESC key, exit out of that mode.
7) Press b, to boot.

To permanently add the option using GRUB as the boot loader:
1) In multi-user mode or GUI mode, hit CTL+ALT+F1
2) type root as the user.
3) type in root's password.
4) type vi /boot/grub/menu.lst
5) press INSERT key, to go into edit mode
6) find the line that reads kernel add the new option at the end. The order of options really does not matter.
7) press ESC key, to get out of edit mode.
8) type :ZZ or :wq to save and quit.
9) Next time you reboot it will use the new option with out having you enter it in all the time to boot.

About the printer issue. If the printer does not work on any other computers, the printer is toast or history. Buying the same printer will not fix it because it may happen again and again. Buy a different ink printer brand or even better a laser printer. Do not buy HP laser printers because they have problems with PDF files. I have an eye on Brother HL-5140 because it is a cheap laser printer and I have not yet read any problems.

Quote:
Originally Posted by charleykadet
I tell you that because LPT is an old protocol.. It was devel on i386 (the real 386!!) now cpu aren't 1mhz but 3000 times faster! I just think that if you take a printer USB you will never have this problem because with the time.. new protocol were more compatible between linux and windows. I don't think you printer was kill by linux... it's maybe just a bug in the firmware but I don't know how to update a firmware if LPT doesn't work.
Parallel ports have been around earlier than 80386. Also an 80386 or i386 speeds are 16 MHz, 25 MHz, 33 MHz, and 40 MHz. The comparison between an 80386 40 MHz to a Pentium 4 2000 MHz (Northwood core) is about 40 fold and this does not include memory bandwidth and bus technologies. A Pentium 4 2000 MHz (Northwood core) is about 100 to 200 times faster than an 80386 40 MHz and again this does count of the extra extensions for handling multimedia and the invention of micro OPCODE.
 
Old 12-22-2006, 07:00 PM   #18
charleykadet
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Quote:
Parallel ports have been around earlier than 80386. Also an 80386 or i386 speeds are 16 MHz, 25 MHz, 33 MHz, and 40 MHz. The comparison between an 80386 40 MHz to a Pentium 4 2000 MHz (Northwood core) is about 40 fold and this does not include memory bandwidth and bus technologies. A Pentium 4 2000 MHz (Northwood core) is about 100 to 200 times faster than an 80386 40 MHz and again this does count of the extra extensions for handling multimedia and the invention of micro OPCODE.
80386 doesn't run at 40mhz!! 80486 run at 33mhz!!! I programed many years on these processors
 
Old 12-22-2006, 07:51 PM   #19
Electro
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My 80386 runs at 40 MHz. It is from AMD.
 
Old 12-22-2006, 11:59 PM   #20
charleykadet
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it's nice when you think.. microcontroller in any usb device run at 96mhz!!
 
Old 12-23-2006, 02:39 AM   #21
Electro
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Quote:
Originally Posted by charleykadet
it's nice when you think.. microcontroller in any usb device run at 96mhz!!
Just about any microcontroller can connect through USB. USB can be clocked to any frequency from 4 MHz to 96 MHz. Most USB circuits that connects to microcontrollers uses serial connection and bandwidth is limited to the fastest speed the microcontroller can handle which is at a sluggish speed of 9600 bps.

I am serious that my AMD 80386 runs at 40 MHz (model 80386DX-40). There are plenty of true information on the internet that proves this.
 
Old 12-23-2006, 12:13 PM   #22
charleykadet
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Quote:
Originally Posted by Electro
Just about any microcontroller can connect through USB. USB can be clocked to any frequency from 4 MHz to 96 MHz. Most USB circuits that connects to microcontrollers uses serial connection and bandwidth is limited to the fastest speed the microcontroller can handle which is at a sluggish speed of 9600 bps.

I am serious that my AMD 80386 runs at 40 MHz (model 80386DX-40). There are plenty of true information on the internet that proves this.
clock is multiplified for usb communication... for an example PIC18F2550
but that didn't solve LPT problem...
 
Old 12-23-2006, 06:55 PM   #23
Electro
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Quote:
Originally Posted by charleykadet
clock is multiplified for usb communication... for an example PIC18F2550
but that didn't solve LPT problem...
dah! Frequency multipliers are the only way to make the design cheaper and little easier to find the components. USB can actually run at any frequency.
 
Old 12-23-2006, 10:25 PM   #24
charleykadet
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Quote:
Originally Posted by Electro
dah! Frequency multipliers are the only way to make the design cheaper and little easier to find the components. USB can actually run at any frequency.
yes... but it works maybe faster than your 80386.. at 40mhz!
 
  


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