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Old 24 May 2020, 07:03   #141
torsti76
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Quote:
Originally Posted by JimDrew View Post
Can you explain what you mean by this? Does FUSION give you an error message or something? FUSION just does a standard device driver Open() with the unit passed in. If the device driver fails to open then it would report an error (fail to start the emulation).
No, Fusion doesn't give me an error message. The problem only manifests itself "inside" the emulation:

When I set up Fusion with the enc624j6net.device unit 0, it successfully starts and boots into my generic MacOS 8.1 installation. But in MacOS, it fails to recognize the card as an 'Ethernet' device. Any previous TCP/IP settings are ignored and if I dare to open the TCP/IP control panel in MacOS, it tells me that the previously chosen 'Ethernet' is no longer available and that it's falling back to 'MacIP'. This isn't particularly useful if the main goal is to get the virtual Mac to connect to the internet.

The described behaviour can be seen with other network devices I tried as well, e.g. x-surf100.device (for the X-Surf 100 card by Individual Computers) or mediatornet.device (for Realtek 8029 10 Mbit cards in a Mediator).

BUT, there are also devices that behave as I would have expected. With those devices, the MacOS TCP/IP control panel shows 'Ethernet' as a choice in the top toggle field where one can select between 'PPP', 'MacIP' and so on. If I chose 'Ethernet' there, I can set up IP address, netmask, gateway, etc. and the emulated Mac is able to connect to the internet as well as to my local Linux boxes, etc.
Examples for such working drivers are fastethernet.device (for Realtek 8039 cards in a Mediator) or nullsana.device (a kind of virtual bridge device that can be found on aminet).

What puzzles me is the question what the difference between those device drivers might be that for some drivers 'Ethernet' in MacOS is possible and for some it isn't. I hope, you can shed some light on this...
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Old 24 May 2020, 20:28   #142
JimDrew
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Whatever device is used MUST be fully SanaII compliant. It sounds like these devices (their device drivers) are missing some of the functionality that is required for the Mac to see them as Ethernet devices.
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Old 24 May 2020, 20:54   #143
torsti76
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Originally Posted by JimDrew View Post
Whatever device is used MUST be fully SanaII compliant. It sounds like these devices (their device drivers) are missing some of the functionality that is required for the Mac to see them as Ethernet devices.
I've got a debug version of the enc624j6net.device from its developer and will try to find out what's missing there.

I'm positive we'll figure it out.
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Old 01 June 2020, 02:18   #144
JimDrew
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Yeah, just log the device driver function calls that are attempted. The device driver is suppose to return -1 (not supported) when there is call that is not supported.
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