[Vm-dev] re: Simulating the Cog V3 VM

[David T. Lewis]

Thank you for these updates! It's very helpful to know what you are
working on.

Dave

>
> I thought I'd share how things are coming along since the other day,
> since you've all been so welcoming :) First of all, thanks for that!
> As a newbie VM developer you've been of so much help.
>
> After loading the fix Elliot uploaded earlier, everything seems to be
> working as expected. A debbuger pops up whenever a redraw is issued
> (from my understanding), displaying the message "Error: inconsistent
> values: 2047 vs 0", which is triggered by calling BalloonArray>>at:.
> However, I've noticed that there's a comment in that message stating
> "Debug only..." on top of the error block, so I guess everything's
> working fine. Proceeding performs the redraw accordingly. So, besides
> this minor annoyance, the simulator seems to be working ok.
>
> I've also tried generating the source for JPEGReadWriter2 only using
> the snippet provided in one of the workspaces and compiling the
> resulting sources; which also seems to be working accordingly.
>
> I've noticed that building the Spur VMMaker image by means of the
> scripts provided now fails when trying to automatically load all the
> necessary packages to have a working VM simulation environment: when
> initializing the last version of OSProcess, a debugger pops up
> alerting that primitiveChangeClassTo: failed. Proceeding seems to
> continue the package loading without further issues. On first starting
> the image, the same debugger pops up. Proceeding then again seems to
> have no effect in the things I've tried so far.
>
> I'll now work on trying to debug my modifications to the plugin from
> the VM simulator.
>
> I also thought I'd share a bit more about the project I'm working on.
> I'm working with Juan at Satellogic on satellite imagery processing.
> As we mostly work with 8-bit deep images and currently the plugin only
> supports writing 32-bit deep images to disk, we found adding support
> for such a feature would come handy in time.
>
> My apologies if my messages seem odd; I'm not used to participating in
> mailing lists. I hope I can contribute something more valuable in the
> future :)
> -Laura Perez Cerrato
>
>
> On 12 May 2016 at 12:23, Laura Perez Cerrato
> <lauraperezcerrato at gmail.com> wrote:
>> Craig,
>> Thanks for the offering! If you could point me in the right direction
>> in order to take this approach I'd greatly appreciate it. Is there any
>> documentation available on the subject?
>>
>> -Laura Perez Cerrato
>>
>>
>> On 12 May 2016 at 10:23, Craig Latta <craig at blackpagedigital.com> wrote:
>>>
>>>
>>> Hi--
>>>
>>>      Eliot writes:
>>>
>>>> The system is designed for one to be able to Instantiate a plugin and
>>>> use it in objects in the current image by using an InterpreterProxy
>>>> instance to interface the plugin code with ordinary Smalltalk
>>>> objects.  But I've never done this so I can't help.  Perhaps
>>>> someone with experience of dong this can provide help.
>>>
>>>      I've done this, for network access used by remote messaging
>>> between
>>> two simulators on different machines (or a simulator and a normal
>>> system). I originally took the LargeIntegerPlugin simulator support as
>>> my example, but have worked with this technique extensively since then.
>>> Laura, I'd be happy to help if you'd like.
>>>
>>>
>>>      thanks,
>>>
>>> -C
>>>
>>> --
>>> Craig Latta
>>> Black Page Digital
>>> Amsterdam
>>> craig at blackpagedigital.com
>>> +31   6 2757 7177 (SMS ok)
>>> + 1 415  287 3547 (no SMS)
>>>
>