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. Update Acknowledgements (Robocom dongles) . Uthernet II: improve 'Virtual DNS' description
113 lines
6.1 KiB
HTML
113 lines
6.1 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<title>Uthernet network cards</title>
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<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
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</head>
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<body style="FONT-FAMILY: verdana; BACKGROUND-COLOR: rgb(255,255,255)" alink="#008000"
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link="#008000" vlink="#008000">
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<h2 style="COLOR: rgb(0,128,0)">Uthernet network cards</h2>
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<hr size="4">
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<p style="FONT-WEIGHT: bold">Overview:
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</p>
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<P>The Uthernet network cards coupled with the Contiki OS allow you to browse the
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internet on your Apple.</P>
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<P style="FONT-WEIGHT: bold">Acknowledgment:
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</P>
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<P>Uthernet (TFE) support in AppleWin was made possible by implementing the GPL
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source written by Spiro Trikaliotis for the Vice emulator - <A href="http://vice-emu.sourceforge.net/index.html#developers">
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http://vice-emu.sourceforge.net/index.html#developers</A></P>
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<P><A href="https://a2retrosystems.com/">Uthernet II</A> support in AppleWin has been contributed by Andrea (audetto) Odetti.</P>
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<P style="FONT-WEIGHT: bold">Details:
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</P>
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<P>To enable ethernet support in AppleWin you must first download and install
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Npcap (or WinPcap).
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</P>
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<P>An alternative to downloading Npcap is to get the Wireshark package which
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includes Npcap along with Wireshark network analyzer code. To use Wireshark to
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capture traffic (other than your own) you must be plugged into a shared hub vs
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a switch. If you plan on doing any network programming Wireshark is a definite
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must have.
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</P>
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<P>Npcap: <A href="https://nmap.org/npcap/#download">https://nmap.org/npcap/#download</A>
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or Wireshark: <A href="https://www.wireshark.org">https://www.wireshark.org</A>
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(or WinPcap: <A href="https://www.winpcap.org/install/default.htm">https://www.winpcap.org/install/default.htm</A>)
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</P>
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<P>After AppleWin starts, select the settings icon and then select the ethernet
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settings button.
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</P>
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<P>Uthernet will be disabled. Select Uthernet or Uthernet II from the list of available ethernet
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emulations.
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</P>
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<P>Select the ethernet interface you want to work with. This must be a physical
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ethernet interface.
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</P>
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<P>If you have more than one interface you may need to select them in turn in order
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to get the text description for each interface vs what Npcap likes to use for
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a reference.
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</P>
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<P><span style="font-weight: bold;">Note:</span> Wireless does not work
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with WinPcap (but see <A href="uthernet-wifi-workaround.html">WiFi Workaround</A>).
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</P>
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<P>In order to test the ethernet emulation out you should grab a copy of Contiki
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for the Apple II here - <A href="http://www.a2retrosystems.com/downloads.htm">http://www.a2retrosystems.com/downloads.htm</A>
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</P>
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<P>Grab the 80 Col. Primary Disk and Supplementary Disk images if using Apple //e
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emulation or the 40 Col versions if running Apple II+ emulation. You should
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also grab a copy of the Uthernet/Contiki getting started guide <A href="http://www.a2retrosystems.com/a2UtherManual.pdf">
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http://www.a2retrosystems.com/a2UtherManual.pdf</A>
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</P>
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<P>Select the contiki80pri.dsk image. Boot AppleWin.
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</P>
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<P>Once Contiki is loaded then press Enter to clear the welcome screen and press
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ESC for a menu.
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</P>
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<P>Choose Directory Application and then select configuration edit program. Tab
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down to the Slot param and change it to '3'. The emulation only works in slot
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3.
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</P>
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<P>If you do not have DHCP support in your local Lan then setup your static IP
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address information here as well. Save and exit. If you have DHCP support in
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your local lan then press ESC and choose Directory Application again, and then
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select DHCP client.
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</P>
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<P>Hit enter on request Address and you should see the IP information updated.
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Close the window and then press ESC again.
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</P>
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<P>Select the web browser and hit Enter a couple of times. Adam Dunkels web site
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should show up if things are working properly.
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</P>
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<P>Try a few other web sites if the first one isn't working in case it is
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temporarily down.
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</P>
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<P>You may also need to configure/disable your firewall if you are having problems.
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</P>
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<P style="FONT-WEIGHT: bold">Troubleshooting:
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</P>
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<P>If you have ZoneAlarm running then try disabling it inorder to access the web.
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if you are still having difficulty then you should refer to the VICE network
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support page for additional information - <A href="http://vicekb.trikaliotis.net/13-005.shtml">
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http://vicekb.trikaliotis.net/13-005.shtml</A></P>
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<P style="FONT-WEIGHT: bold">Uthernet II:
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</P>
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<P>Most features of the Uthernet II are emulated, with the following caveats:
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<ul>
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<li>PPPoE, interrupts and SPI are not implemented</li>
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<li>server side is not well tested</li>
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<li>after loading a save-state file, TCP and UDP sockets are closed</li>
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</ul>
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</P>
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<P>The card implements a <A href="https://github.com/a2retrosystems/uthernet2/wiki/Virtual-W5100-with-DNS">Virtual DNS</A>
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interface (not found on real hardware) for Apple II software to run without raw sockets: this allows operation on any type of network.
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</P>
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<P>Note that the Apple II application must be virtual W5100-aware (currently as of early 2024 the only application that supports this is <A href="https://github.com/oliverschmidt/A2Stream">A2Stream</A>). AppleWin will utilise DNS offloading when both AppleWin is configured to use "Virtual DNS" and the Apple II application enables the W5100 for the "Virtual DNS" mode.
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</P>
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<P>Enabling AppleWin for "Virtual DNS" and using with Apple II applications that don't support this is harmless (but you won't get any benefit).
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</P>
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<P>AppleWin's W5100 emulation returns the following depending on whether AppleWin's "Virtual DNS" is checked or not:
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<li>Checked (default): W5100 register 0x28 returns 0x00 (so Apple II applications can use this to detect the virtual W5100 has virtual DNS support).</li>
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<li>Unchecked: W5100 register 0x28 returns 0x28 (ie. the emulated W5100 behaves like a real W5100).</li>
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</P>
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</body>
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</html>
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