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Bundle of questions before starting

Posted: Tue Jan 02, 2018 10:32 am
by webshaker
Hi.

I'll have to start a new project and I like to have information about the RiscOS possibilty before choosing the OS.
I have had an Archimedes few years ago and I like this computer, so if I can use the BBC basic one time again it could be cool.

My main question are:

1 - Do the BBC basic still allow to switch to assembly. And if Yes, does the neon instructions are allowed ?
2 - Is it possible to draw on the DSI device AND hdmi device simultaneously
3 - How many second are needed to boot a Raspberry Pi with risc OS. I remember my Archimedes boots so fast.

Thank's
Etienne

Re: Bundle of questions before starting

Posted: Tue Jan 02, 2018 1:06 pm
by webshaker
In fact this in not a DSI device but a LCD 40 pins device.

thank's

Re: Bundle of questions before starting

Posted: Tue Jan 02, 2018 5:18 pm
by Burngate
webshaker wrote:
Tue Jan 02, 2018 10:32 am
1 - Do the BBC basic still allow to switch to assembly. And if Yes, does the neon instructions are allowed ?
Yes, you can still use assembler code. No idea about neon, as I've not needed it.
3 - How many second are needed to boot a Raspberry Pi with risc OS. I remember my Archimedes boots so fast.
Try it and see.

Go to https://www.riscosopen.org/content/ for more info, specifically https://www.riscosopen.org/wiki/documen ... 0Pi%20port.

Re: Bundle of questions before starting

Posted: Wed Jan 03, 2018 8:16 am
by dfeugey
BBC Basic's assembler is pretty complete. And there is now a version of BBC Basic with VFP support.
The system boots in around 20 seconds. Much less with a smaller Boot sequence. And in no time in command line mode.
Dual screen: not sure...

Re: Bundle of questions before starting

Posted: Sun Sep 09, 2018 6:39 pm
by DavidS
webshaker wrote:
Tue Jan 02, 2018 10:32 am

1 - Do the BBC basic still allow to switch to assembly. And if Yes, does the neon instructions are allowed ?
Yes it does. Same as always.
And the current version supports VFP and NEON instructions.
2 - Is it possible to draw on the DSI device AND hdmi device simultaneously
i do not know of anyone that has ever tried that. i am not even sure how one would go about it.
Is there a way to do so in other OS's on the RPi?
3 - How many second are needed to boot a Raspberry Pi with risc OS. I remember my Archimedes boots so fast.
Depends on what is in your boot sequence. Anywhere from 7 seconds (for how i have mine) to about 20 seconds (for how it is configured when you get it).
Thank's
Etienne
I just hope this helps.