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  Topic: My Key
dmichel

Replies: 2
Views: 7586

PostForum: Information/Support   Posted: Sat Aug 28, 2010 10:30 am   Subject: My Key
I replied to the message you sent to support. Smile
  Topic: PC_FX pio support?
dmichel

Replies: 6
Views: 11993

PostForum: General   Posted: Fri Jul 30, 2010 5:48 pm   Subject: PC_FX pio support?
Yes, it's a compile-time option. I will prepare you a special version.
  Topic: PC-FX interrupts and VSync?
dmichel

Replies: 7
Views: 13890

PostForum: General   Posted: Thu Jul 29, 2010 5:51 pm   Subject: PC-FX interrupts and VSync?
Great!

What is the IRQ level set to in IRQ_Enable()?

IRQ_Enable() just clears the interrupt disable flag in the status register of the V810. IRQ_Init() had set it.

It looks like I have the IR ...
  Topic: PC-FX interrupts and VSync?
dmichel

Replies: 7
Views: 13890

PostForum: General   Posted: Thu Jul 29, 2010 11:26 am   Subject: PC-FX interrupts and VSync?
Sure, here it is :

void InitInterrupt()
{
IRQ_Init();
IRQ_SetVector(IRQ_LEVEL_7UPA, Intr7up);
IRQ_ResetMask(IRQ_LEVEL_7UPA);
IRQ_Enable();
 ...
  Topic: PC-FX interrupts and VSync?
dmichel

Replies: 7
Views: 13890

PostForum: General   Posted: Wed Jul 28, 2010 10:11 am   Subject: PC-FX interrupts and VSync?
Hmm, I'm not aware of any interrupt problem, but may be the library you use expect some initialization to be done by the BIOS, and since MEFX doesn't have one this could be a problem.

What SDK do y ...
  Topic: PC_FX pio support?
dmichel

Replies: 6
Views: 11993

PostForum: General   Posted: Wed Jul 28, 2010 9:45 am   Subject: PC_FX pio support?
Yes, they point to a directory you define in the pcfx.ini, and access is restricted too so that a program can't go outside this defined directory.
  Topic: PC_FX pio support?
dmichel

Replies: 6
Views: 11993

PostForum: General   Posted: Tue Jul 27, 2010 10:40 pm   Subject: PC_FX pio support?
Oh yes I can enable some pio calls, the version I use to debug MagicEngine-FX already support putstr, fopen, fseek, fread, and fclose. Smile
  Topic: PC-FX RGB to YUV conversion?
dmichel

Replies: 1
Views: 7607

PostForum: General   Posted: Mon Jul 26, 2010 1:17 pm   Subject: PC-FX RGB to YUV conversion?
Good question!

For patching some images of Pia Carrot I needed a RGB to YUV converter too, I tried many formulas but none of them was exact, there was always a little glitch, so in the end I used a ...
  Topic: [2010-05-13] I'm back!
dmichel

Replies: 13
Views: 46828

PostForum: Development blog   Posted: Wed Jul 07, 2010 8:13 pm   Subject: [2010-05-13] I'm back!
Yup, this is already implemented in the new version. Smile
  Topic: [2010-06-06] optimized hybrid cpu core
dmichel

Replies: 6
Views: 13998

PostForum: Development blog   Posted: Wed Jun 23, 2010 9:35 pm   Subject: [2010-06-06] optimized hybrid cpu core
It's easy too, at the beginning of each scanline you know what sprites will be displayed and where, check if they collide, calculate at what pixel and you got the interrupt time.
  Topic: [2010-06-23] hybrid vdc core & backup ram manager
dmichel

Replies: 3
Views: 12007

PostForum: Development blog   Posted: Wed Jun 23, 2010 9:28 pm   Subject: [2010-06-23] hybrid vdc core & backup ram manager
A lot of things going on, the hybrid VDC core is half finished, I got the timing and I/O part working, only the rendering part is missing, I'm trying to separate the two parts so that the rendering ca ...
  Topic: [2010-06-06] optimized hybrid cpu core
dmichel

Replies: 6
Views: 13998

PostForum: Development blog   Posted: Mon Jun 14, 2010 9:53 am   Subject: [2010-06-06] optimized hybrid cpu core
Not anymore, that was what I was doing in the new core, something like that :

cpu_cycle();
vdc_cycle();
cpu_cycle();
vdc_cycle();
...

The hybrid core is a classic core with the CPU instructi ...
  Topic: [2010-06-06] optimized hybrid cpu core
dmichel

Replies: 6
Views: 13998

PostForum: Development blog   Posted: Sun Jun 06, 2010 1:16 pm   Subject: [2010-06-06] optimized hybrid cpu core
I'm starting to see the first result of the hybrid CPU core in action, it looks great! It's 3 to 4 times faster than the new core, and it's even faster than the old core by about 25%. Dancing

I rewrot ...
  Topic: [2010-05-28] cpu optimization continued
dmichel

Replies: 0
Views: 7031

PostForum: Development blog   Posted: Fri May 28, 2010 10:48 pm   Subject: [2010-05-28] cpu optimization continued
The hybrid concept seems to work fine, I have taken the old CPU core and I modified it to support cycle by cycle accuracy, and to test it I'm running it side by side with the new core, so far I get th ...
  Topic: [2010-05-20] cpu optimization
dmichel

Replies: 0
Views: 6111

PostForum: Development blog   Posted: Thu May 20, 2010 10:29 pm   Subject: [2010-05-20] cpu optimization
The new CPU core is harder to optimize than I thought, I optimized the code as much as I could but this gave me only a 20% speed increase.

The problem is that the new core emulate the instructions ...
 
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