![\"TC64](\"https:\/\/i0.wp.com\/lallafa.de\/blog\/wp-content\/uploads\/2013\/11\/mimippp02-300x200.jpg?resize=300%2C200\")
<\/a>TC64 with SilverSurfer attached to Raspi<\/p><\/div>\n
Read on to find out all the glory details, starting with a pure “virtual”\u00c2\u00a0simulation running on a Mac on to the real thing…<\/p>\n
[You can use this approach to bring other classic Amigas to the network, too.\u00c2\u00a0But for all machines with a parallel port available I’d suggest to use my\u00c2\u00a0plipbox project<\/a>: Its far easier to setup, a lot faster (4-5x ), and even cheaper :)]<\/p>\n The following ingredients are required for this little project:<\/p>\n Get your FS-UAE up and running first. There a lots of tutorials out there on\u00c2\u00a0this topic. We will use it to prepare the Minimig HDF file.<\/p>\n My HDF File from the Minimig is called minimig.hdf<\/strong>\u00c2\u00a0and as a first step I copy\u00c2\u00a0it to my Mac into the ~\/Documents\/FS-UAE\/Hard Drives\/<\/strong> folder.<\/p>\n Set up a FS-UAE configuration file to use this image with a compatible machine:<\/p>\n Note the second hard drive is a local directory I use to exchange data files\u00c2\u00a0with my Mac file system.<\/p>\n The last option is the most interesting: We connect Paula’s serial port to a\u00c2\u00a0file named \/tmp\/vser<\/strong>. What’s this you might ask?<\/p>\n This is where the magic begins: We want to simulate a PPP connection from the\u00c2\u00a0Amiga running inside FS-UAE and therefore we need to connect its serial port to\u00c2\u00a0a serial line with a pppd listening on the other side. We run pppd directly on\u00c2\u00a0the Mac but this tool also wants to connect to a serial port… So we have two\u00c2\u00a0applications on the Mac each wanting to reach a serial port device…<\/p>\n I use a wonderful tool called socat<\/a> (found e.g. on MacPorts on Macs) to create\u00c2\u00a0the “virtual serial line” between them: It allows me to create two PTYs\u00c2\u00a0(virtual terminals) and connects them. I created a small script called vser2pty<\/strong>\u00c2\u00a0to achieve this:<\/p>\n If you run this script in a terminal then a “virtual serial line” is created between the\u00c2\u00a0terminals named \/tmp\/vser<\/strong> and \/tmp\/hser<\/strong>. Those pseudo terminals are actually compatible to real serial ports as they used to connect terminals, too.<\/p>\n Now everything becomes clear: We let FS-UAE’s Paula emulation connect to\u00c2\u00a0\/tmp\/vser<\/strong> while the pppd process will use \/tmp\/hser<\/strong>…<\/p>\n Ok, enough magic for now… Start your virtual serial line and (after this)\u00c2\u00a0FS-UAE. Inside FS-UAE install Roadshow 1.11 (or the Update) if you haven’t\u00c2\u00a0already done so.<\/p>\n On the Amiga side we will need a network driver file for PPP first: Create a\u00c2\u00a0new file in DEVS:NetInterfaces\/PPP<\/strong>\u00c2\u00a0with the following contents:<\/p>\n Now on a CLI you could already add this interface with:<\/p>\n The driver needs a configuration file to find out what serial port or what\u00c2\u00a0options are requested: Create a new file called:\u00c2\u00a0S:PPP-Configurations\/ppp-serial<\/strong>:<\/p>\n This file is for testing only. Later on we will use\u00c2\u00a0S:PPP-Configurations\/ppp-silver<\/strong> which uses the SilverSurfer device:<\/p>\n Ok, now on the Amiga in FS-UAE we are set up! Before we can continue here, we’ll\u00c2\u00a0need to start the pppd on the host side…<\/p>\n pppd expects that the serial device it connects to has to start with \/dev\/<\/strong>…\u00c2\u00a0Therefore, we can’t directly use the link that our virtual serial port script\u00c2\u00a0has created. But a cheesy ls discovers the real PTY and this a \/dev<\/strong> device \ud83d\ude42<\/p>\n Note: that the name of the PTY might change every time you restart the vser2pty<\/strong>\u00c2\u00a0script.<\/p>\n Now we can launch pppd as root (we need these priviledges to allow pppd to setup\u00c2\u00a0the required net interfaces):<\/p>\n The mentioned IP adresses give the point-to-point link used for ppp: the first is the host address the second the Amiga’s address. To make proxyarp<\/strong> work, you\u00c2\u00a0have to make sure that these addresses are on the same subnet as your main\u00c2\u00a0network link on your machine. E.g. my Mac sits on the 192.168.2.x subnet of my\u00c2\u00a0home router and therefore 192.168.2.250 is a valid point-to-point address that\u00c2\u00a0can use proxyarp.<\/p>\n The only thing missing is enabled IP forwarding on your machine. On Macs you do:<\/p>\n Ok, pppd is up and running… Now we can connect from the Amiga side…<\/p>\n Use the ppp_dialer<\/strong>\u00c2\u00a0script installed with Roadshow and the script for the\u00c2\u00a0serial.device we already set up:<\/p>\n If everything works fine then you see the connect in both pppd and CLI output.<\/p>\n Open a new CLI and keep the PPP link up. Now you can use the network on your\u00c2\u00a0Amiga:<\/p>\n So far, so good… PPP, Networking does fine in the Amiga setup. Now lets head\u00c2\u00a0over to the real Hardware (TM).<\/p>\n First transfer the altered minimig.hdf<\/strong> disk image back to your SD card you’ll\u00c2\u00a0use with the Minimig. I prefer the rsync<\/strong>\u00c2\u00a0command here as it is faster of only\u00c2\u00a0slight changes were applied to the image.<\/p>\n The Minimig PPP setup<\/p><\/div>\n I assume you have a configured an up to date Raspbian Linux distribution\u00c2\u00a0already running on your system.<\/p>\n First make sure to have pppd installed:<\/p>\n Now attach your serial-to-USB adapter. Most adapters are recognized out of the\u00c2\u00a0box by Linux and registered as a tty device in \/dev\/ttyUSBx<\/strong>. In dmesg<\/strong> you’ll\u00c2\u00a0see something like this:<\/p>\n As you can see I use a FT232-based device that is well supported on Linux (and OS X) and also available almost everywhere at decent prices.<\/p>\n And the device itself is here:<\/p>\n Ok, serial port is up.<\/p>\n Most modern serial ports have a DB 9 connector while the SilverSurfer has an\u00c2\u00a0Amiga compatible DB 25 serial port. Therefore, an 9-to-25 adapter is required\u00c2\u00a0to connect both. I soldered mine with the instructions found at Cloanto’s site<\/a>:<\/p>\n USB-to-Serial adapter with self-made 9-to-25 pin adapter<\/p><\/div>\n To finish the SW setup, we need to enable IP forwarding on Linux otherwise the\u00c2\u00a0Amiga connected via PPP can’t reach the rest of the world.<\/p>\n You can do this for this session with:<\/p>\n Or permanently by adding the following line to \/etc\/sysctl.conf<\/strong>:<\/p>\n Now its time to fire up the pppd server itself:<\/p>\n It now waits for the connection setup from the Minimig. Therefore ‘dial’ there with the SilverSurfer config:<\/p>\n Ok, we are on the Net!<\/p>\n Minimig running Roadshow PPP and pinging the net<\/p><\/div>\n You can play around with your full featured link now:<\/p>\n Ah, before I forget: the last call needs DNS<\/strong> to resolve the symbolic name. To make\u00c2\u00a0this work on Roadshow you have to edit the file DEVS:Internet\/name_resolution<\/strong>:<\/p>\n After a restart of Roadshow networking everything should work:<\/p>\n That’s it… all you need to get your ‘mig on the net! \ud83d\ude42<\/p>\n If you want to make the pppd setup persistent and run it automatically on Pi\u00c2\u00a0startup then you can add the call to \/etc\/rc.local<\/strong>:<\/p>\n Now debugging is disabled, daemon mode enabled and automatic retries activated.\u00c2\u00a0(see ‘man pppd’ for more details…)<\/p>\n If you want to play with some performance options you might want to try the ‘novj’ option\u00c2\u00a0to disable header compression…<\/p>\n Serial PPP with 115200 Baud gives you an avg. of 6 to 8 KiB\/s data transfer rate… Not fast as hell, but all in all much more comfortable than ejecting your SD Card and booting the system each time you need small file \ud83d\ude42<\/p>\n Have Fun!<\/p>\n My comfy desktop with Minimig PPP setup<\/p><\/div>\n","protected":false},"excerpt":{"rendered":" When working with an Amiga running on a Minimig platform then data transfer is\u00c2\u00a0not as convenient as one might think: You have an SD Card connected and copying\u00c2\u00a0files around with SD Card is not the biggest deal, but unfortunately your … Continue reading 1. Ingredients<\/h3>\n
\n
\n
\n
\nI use a BetterWB<\/a> installed on vanilla OS 3.1<\/li>\n
\nI chose this one, because its actively supported, has a nice CLI interface\u00c2\u00a0and ships PPP support out of the box. And not to forget: it has pure 68000 support (not only 020er or better)!
\nNote:<\/strong> use the most recent version 1.11 as it fixes some PPP Bugs!<\/li>\n<\/ul>\n<\/li>\n\n
\n
2. Prepraring and Testing the Amiga HDF<\/h3>\n
FS-UAE Config<\/h4>\n
[config]\r\namiga_model = A1200\r\nfast_memory = 8192\r\nhard_drive_0 = minimig.hdf\r\nhard_drive_1 = \/Users\/chris\/amiga\/shared\r\nwindow_width = 640\r\nwindow_height = 512\r\nwindow_resizable = false\r\nserial_port = \/tmp\/vser<\/pre>\n
Virtual Serial Line<\/h4>\n
#!\/bin\/sh\r\nOPTS=raw,echo=0,onlcr=0,echoctl=0,echoke=0,echoe=0,iexten=0\r\nexec socat \"$@\" pty,$OPTS,link=\/tmp\/vser pty,$OPTS,link=\/tmp\/hser<\/pre>\n
Roadshow Config<\/h4>\n
device=ppp-serial.device\r\nrequiresinitdelay=no<\/pre>\n
CLI> addnetinterface ppp\r\nInterface \"ppp\" added.<\/pre>\n
interface=ppp\r\ndevice=serial.device\r\nbaud=38400\r\nrtscts=no\r\ncheckcarrier=no\r\nnullmodem=yes<\/pre>\n
interface=ppp\r\ndevice=silversurfer.device\r\nbaud=115200\r\nrtscts=yes\r\ncheckcarrier=no\r\nnullmodem=yes<\/pre>\n
pppd Config on Host<\/h4>\n
> ls -l \/tmp\/hpar\r\n\/dev\/ttys002<\/pre>\n
> sudo pppd debug -detach proxyarp 192.168.2.250:192.168.2.251 ttys002 115200<\/pre>\n
> sudo sysctl -w net.inet.ip.forwarding=1<\/pre>\n
Roadshow Connect<\/h4>\n
CLI> ppp_dialer s:PPP-Configurations\/ppp-serial\r\n...\r\nPPP has connected<\/pre>\n
...\r\n Sat Nov 16 19:59:09 2013 : found interface en3 for proxy arp\r\n Sat Nov 16 19:59:09 2013 : local IP address 192.168.2.250\r\n Sat Nov 16 19:59:09 2013 : remote IP address 192.168.2.251\r\n Sat Nov 16 19:59:09 2013 : Received protocol dictionaries\r\n Sat Nov 16 19:59:09 2013 : Received acsp\/dhcp dictionaries\r\n Sat Nov 16 19:59:09 2013 : Committed PPP store\r\n Sat Nov 16 19:59:09 2013 : Received acsp\/dhcp dictionaries\r\n Sat Nov 16 19:59:09 2013 : Committed PPP store<\/pre>\n
CLI2> ping 192.168.2.250 # ping Mac pppd (basic test)\r\nCLI2> ping 192.168.2.1 # ping my router (check ip forwarding)\r\nCLI2> ftp 192.168.2.1 # ftp my router (test non-ping apps)<\/pre>\n
3. Raspi Setup<\/h3>\n
![\"The](\"https:\/\/i0.wp.com\/lallafa.de\/blog\/wp-content\/uploads\/2013\/11\/minippp01-300x190.jpg?resize=300%2C190\")
<\/a># apt-get install ppp<\/pre>\n
Setting up the Serial Link<\/h4>\n
[ 27.625546] ftdi_sio 1-1.3:1.0: FTDI USB Serial Device converter detected\r\n[ 27.626059] usb 1-1.3: Detected FT232BM\r\n[ 27.626085] usb 1-1.3: Number of endpoints 2\r\n[ 27.626100] usb 1-1.3: Endpoint 1 MaxPacketSize 64\r\n[ 27.626114] usb 1-1.3: Endpoint 2 MaxPacketSize 64\r\n[ 27.626126] usb 1-1.3: Setting MaxPacketSize 64\r\n[ 27.628597] usb 1-1.3: FTDI USB Serial Device converter now attached to ttyUSB0\r\n[ 27.628659] ftdi_sio: v1.6.0:USB FTDI Serial Converters Driver<\/pre>\n
> ls -la \/dev\/ttyUSB0\r\nrw-rw---T 1 root dialout 188, 0 Nov 17 10:17 \/dev\/ttyUSB0<\/pre>\n
Adding the Serial Adapter<\/h4>\n
![\"USB-to-Serial](\"https:\/\/i0.wp.com\/lallafa.de\/blog\/wp-content\/uploads\/2013\/11\/minippp03-300x207.jpg?resize=300%2C207\")
<\/a>IP Forwarding<\/h4>\n
> sudo sysctl net.ipv4.ip_forward=1<\/pre>\n
net.ipv4.ip_forward=1<\/pre>\n
Starting PPPD<\/h4>\n
> sudo \/usr\/sbin\/pppd noauth nodetach debug proxyarp \\\r\n 192.168.2.250:192.168.2.251 \/dev\/ttyUSB0 115200<\/pre>\n
CLI> addnetinterface ppp\r\nCLI> ppp_dialer S:PPP-Configurations\/ppp-silver\r\n...\r\nPPP has connected<\/pre>\n
![\"Minimig](\"https:\/\/i0.wp.com\/lallafa.de\/blog\/wp-content\/uploads\/2013\/11\/mimippp04-300x227.jpg?resize=300%2C227\")
<\/a>CLI> ping 192.168.2.250 # ping Raspi-side of point-to-point link\r\nCLI> ping 192.168.2.1 # ping my router (see if ip forwarding work)\r\nCLI> ping www.lallafa.de # reach the world (test DNS)<\/pre>\n
nameserver 192.168.2.1 # add my router as name server<\/pre>\n
CLI> netshutdown\r\nCLI> addnetinterface ppp\r\nCLI> ppp_dialer S:PPP-Configurations\/ppp-silver<\/pre>\n
Make it persistent<\/h4>\n
# \/etc\/rc.local\r\n# auto ppp startup\r\n\/usr\/sbin\/pppd noauth persist proxyarp \\\r\n 192.168.2.250:192.168.2.251 \/dev\/ttyUSB0 115200<\/pre>\n
![\"My](\"https:\/\/i0.wp.com\/lallafa.de\/blog\/wp-content\/uploads\/2013\/11\/mimippp05-200x300.jpg?resize=200%2C300\")
<\/a>