Search found 64 matches

by gdridi
Tue Feb 13, 2024 11:58 pm
Forum: General Developer Support
Topic: What are the code running into the kernel on the AmigaOS
Replies: 2
Views: 88960

Re: What are the code running into the kernel on the AmigaOS

Some ad(d)s DoIO() on the same core is Ok But DoIO() on different cores must be ´degrade’ to SendIO() with true copy for message passing if possible and if not one’s can optimize this SendIO() without copy. Finally, all calls in Amiga programs using directly BeginIO[] raw vector library which is cal...
by gdridi
Fri Feb 09, 2024 8:50 pm
Forum: General Developer Support
Topic: What are the code running into the kernel on the AmigaOS
Replies: 2
Views: 88960

Re: What are the code running into the kernel on the AmigaOS

Some french interesting talk by Profesor at College-de-France ; premise to thread and scheduler : generator, coroutines as linguistic constructs in programming language. Note : Coroutines were added in BCPL programming language (compiler) an ancestor of C language… and C++ https://youtu.be/T_w3OlZ5ASc
by gdridi
Mon Nov 20, 2023 5:53 pm
Forum: General Developer Support
Topic: What are the code running into the kernel on the AmigaOS
Replies: 2
Views: 88960

What are the code running into the kernel on the AmigaOS

Hello! It is difficult to make boundaries on what’s running on kernel mode in the AmigaOS because of the type of kernel choose on AmigaOS: exo-kernel . That’s to postponed interrupt task or immediate task which normally runs the kernel(traps) to user mode. This is done, By the means of signal and me...
by gdridi
Sat Oct 21, 2023 1:09 pm
Forum: General Developer Support
Topic: Longs interrupts are bad for multitasking and high priority task too
Replies: 0
Views: 85198

Longs interrupts are bad for multitasking and high priority task too

Hello,

I learn from AmigaOS practice two things:
Longs interrupts are bad for multitasking and high priority task too

What’s new is spinlock for multicore, here a teasing:

linux - Interrupt and spinlock - Stack Overflow

https://stackoverflow.com/questions/271 ... d-spinlock

DG
by gdridi
Mon Oct 16, 2023 12:30 am
Forum: General Developer Support
Topic: Text datatype
Replies: 6
Views: 6498

Re: Text datatype

Hello !

Multicore at AmiWest23 (DevCon1)

Why running only with a primitive shell window before the launch of Workbench and run only commands in a multicore environment?

Perhaps the core dump (a crash) after 20 seconds is due to the launch of screen saver..

Bye, courage
by gdridi
Sat Sep 23, 2023 8:38 pm
Forum: AmigaOS Feature Requests
Topic: ExecTG
Replies: 1
Views: 12135

Re: ExecTG

Hello, Features I would like for ExecThirdGeneration : A Send() method which copies/duplicates the body of the message structure (64KB max actually) to support MultiCPU/multicore by using true message passing. A utility to launch two Workbenches, one on each core and a _toolbox_ for communicating b...
by gdridi
Sun Aug 06, 2023 2:12 pm
Forum: AmigaOS Feature Requests
Topic: Multicore
Replies: 1
Views: 25669

Re: Multicore

Hello!

Small is beautiful!

Using two threads with dual core rbp pico :

How to use Dual Core of Raspberry Pi Pico using MicroPython

https://microcontrollerslab.com/dual-co ... cropython/

Nice!

Regards,
DG
by gdridi
Wed Aug 02, 2023 4:07 pm
Forum: General Developer Support
Topic: Text datatype
Replies: 6
Views: 6498

Re: Text datatype

Hello!

Thank a lot, it will be useful.

I will test it - remove the datatype, chg the font of the window and Reload the datatype.

Regards
by gdridi
Fri Jul 21, 2023 12:45 pm
Forum: AmigaOS Feature Requests
Topic: Font with both negative value for kerning (-9) and spacing(-9) should be displayed with Multiview
Replies: 5
Views: 10405

Re: Font with both negative value for kerning (-9) and spacing(-9) should be displayed with Multiview

@tonyw I’m sorry if I wasted your time on graphics to treat RightToLeft text, because (on Amiga) it’s a topic on disk font library but a lack of documentation to know if it’s done the implementation complete. So I change my abstract on os4depot.net (18/12/2022) : " Set up an arabic console devi...
by gdridi
Wed Jul 19, 2023 2:28 pm
Forum: AmigaOS Feature Requests
Topic: Font with both negative value for kerning (-9) and spacing(-9) should be displayed with Multiview
Replies: 5
Views: 10405

Re: Font with both negative value for kerning (-9) and spacing(-9) should be displayed with Multiview

A more recent discussion is available at: gdridi wrote: ↑Sun Jul 16, 2023 12:32 pm Is my console/font/graphics library/Odyssey version just not able to display what might there...or is there nothing to display? Curious...and puzzled The font mungi-?-kufi.font won’t display in a font browser, in Mul...