OS3.9 -> 4.0

[Tafka]

I was just wondering as the code of 4.0 is not just a natural progression of 3.9 (it is from 3.1 I think ??) are there going to be some things that work on 3.9 that do not work on 4.0?

Apart from the obvious CPU issues.  I mean things like are there OS functions in 3.9 that won't be in 4.0?

[JurassicCamper]

Tafka wrote:
I was just wondering as the code of 4.0 is not just a natural progression of 3.9 (it is from 3.1 I think ??) are there going to be some things that work on 3.9 that do not work on 4.0?

Apart from the obvious CPU issues.  I mean things like are there OS functions in 3.9 that won't be in 4.0?

Not at all..

A thing a lot of people forget is all H&P did was project manage OS3.5 / 3.9. The developers who coded modules for those are also coding 4.0 modules so they have the source code in a round about sort of way.

[Rogue]

All of 3.9's exec functions will also be in ExecSG.

There is a backwards compatibility mode for compiling source code from 3.9 that will mostly be preprocessor based. That means that some things that work differently on ExecSG (libraries for example) are encapsulated into preprocessor macros so that most source code can be recompiled on 4.0 without too many changes.

Changes mostly affect startup (Libraries need a slightly different opening sequence), and of course some things like Interrupt handling are different.

Also, PCI support is unified under a common API now.

More work will be required for devices and libraries, since the model is significantly different from the old exec. However, it isn't too difficult, I managed to convert the ramdev device in a two or three hours.

[jaokim]

Also, PCI support is unified under a common API now

Will the Mediator-drivers (and Prometheus & GRex, I guess) be available through this API? Maybe a question for elbox, but is it possible in an "easy" way, ie have you thought of it?
 
I guess that would increase the initial hardware support. Which is nice  :-)

[lempkee]

i doubt u will ever see an GreXx version...

anyway all i have in mind now is that the ARExX wont be in os4 or something like that, but i am not sure and i dont want to spread fud, but i belive that was mentioned by some in the hyperion team...or was that just a further version ?...

anyone remeber? , would be happy to see this cleared up...


also, i know that os4 for a1200 will be a hard task, hopefully it will work, but i have my doubts in the same way as i have about the so called sHaRK PPC.... if the sharkppc is working as they claim and bla bla bla...then elbox would have released that ages ago, by that i mean just the shark....and not the shark+ cards..

anyway i hope that all this will be cleared up pretty soon , also that we get some info on how it will react with all of the old modules in os3.x ->4.0 ,  ie just a clean install and everything will work? ...or will it be like when os3.5 came....that i couldnt install it at all unless i formatted everything and started from scratch.... and then moved back to 3.1 again....

but when 3.9 came i jumped onto that and i have cheerished that since day1... 3.5 was a piece of crap imho!!...3.9 roxx.


hmm i sidetracked again........

[carls]

For all I know, ARexx will be a part of OS4, although still as a 68k version, handled by the emulation.

[iamaboringperson]

if you read the FAQ's from amiga inc & hyperion, you should find that 4.0 is indeed based on 3.9

[Zorro]

@ Rogue

What is the next show that you plan to assist ?

I am waiting the OS4 boot demo...

 :-P

[EntilZha]

@ lempkee

Regarding AREXX: The version included with OS4 is the 68k version. We don't have source code. We're still looking at alternatives that might be available in an update.

[EntilZha]

@ jaokim

Yes, you would have to ask Elbox :-)

[Rogue]

Zorro wrote:
@ Rogue

What is the next show that you plan to assist ?

I am waiting the OS4 boot demo...

 :-P

No idea to be honest. This depends on some factors, like being able to show up and so on. Also, we would like to prepare some nice demo for it and not just boot it up. As has been said before, you only get once chance to make a first impression ;-)

[Zorro]

Rogue wrote:

Zorro wrote:
@ Rogue

What is the next show that you plan to assist ?

I am waiting the OS4 boot demo...

 :-P

No idea to be honest. This depends on some factors, like being able to show up and so on. Also, we would like to prepare some nice demo for it and not just boot it up. As has been said before, you only get once chance to make a first impression ;-)

 :-)

This is true....

... but if we wait for too long and loose interest, you (and our beloved AmigaOS) can have the chance anymore ?  ;-)

I am joking obviously, I will wait forever if it is needed !

But who know how many will do the same... ?