[comp.protocols.appletalk] MacTCP and alternet .ENET drivers

chuck@brain.UUCP (Chuck Shotton) (06/23/91)

After poking through all of Inside Mac and some of Inside AppleTalk, it seems
possible to write a ".ENET0" driver (adev?) that would allow MacTCP to talk over normal
serial connections.

Does anyone have any thoughts on how hard this might be, or if it's the right
approach at all? Has anyone done it yet? Where are the docs on writing ENET
type driver? (Inside Ethertalk?)

Chuck

-----------------------------------------------------------------------
Chuck Shotton                 Internet:  cshotton@girch1.med.uth.tmc.edu
                              UUCP:      ...!buster!brain!chuck
"Your silly quote here."      AppleLink: D1683       MacNet: shotton

brad@stjohn.cayman.com (06/24/91)

>> 
>> After poking through all of Inside Mac and some of Inside
>> AppleTalk, it seems possible to write a ".ENET0" driver (adev?)
>> that would allow MacTCP to talk over normal serial connections.
>> 
>> Does anyone have any thoughts on how hard this might be, or if it's
>> the right approach at all? Has anyone done it yet? Where are the
>> docs on writing ENET type driver? (Inside Ethertalk?)
>> 
>> Chuck Shotton                 Internet:  cshotton@girch1.med.uth.tmc.edu

It's certainly been theorized. However, there is no way to tell MacTCP
that your link is slow and it should adjust it's timeouts.

A better solution would be to interface with MacTCP directly. I suspect
Apple has thought of this and probably has plans to address this in
the future. Bottom line: I would not recommend spoofing with a fake
.ENET driver unless the resulting network connection is ethernet speed or
close (withing a order of magnitude)

-brad

shoemake@Apple.COM (Mike Shoemaker) (06/24/91)

chuck@brain.UUCP (Chuck Shotton) writes:

>After poking through all of Inside Mac and some of Inside AppleTalk, it seems
>possible to write a ".ENET0" driver (adev?) that ...

>... Where are the docs on writing ENET
>type driver? (Inside Ethertalk?)

>Chuck

>-----------------------------------------------------------------------
>Chuck Shotton                 Internet:  cshotton@girch1.med.uth.tmc.edu
>                              UUCP:      ...!buster!brain!chuck
>"Your silly quote here."      AppleLink: D1683       MacNet: shotton

See Inside Macintosh Volume VI.  It is in the AppleTalk chapter -- there
is a whole section on the .ENET driver.

Mike Shoemaker