Welcome, Guest. Please login or register.

Author Topic: Excitement about NatAmi  (Read 99315 times)

Description:

0 Members and 14 Guests are viewing this topic.

Offline bloodline

  • Master Sock Abuser
  • Hero Member
  • *****
  • Join Date: Mar 2002
  • Posts: 12113
    • Show all replies
    • http://www.troubled-mind.com
Re: Excitement about NatAmi
« on: November 30, 2010, 01:55:38 PM »
Quote from: asymetrix;595535
@thread

What is this cycle exact rubbish I keep reading. There IS NO SUCH THING.

All Commodore Amigas A1000, A1200, A600, A4000 etc are never cycle exact to each other - they technically cannot be because they all run at different speeds !

The are compatible but never CYCLE EXACT - ask any engineer.
You're weird...

Buy a hobby microcontroller kit, have a play... Lean how digital electronics works ;)

Offline bloodline

  • Master Sock Abuser
  • Hero Member
  • *****
  • Join Date: Mar 2002
  • Posts: 12113
    • Show all replies
    • http://www.troubled-mind.com
Re: Excitement about NatAmi
« Reply #1 on: November 30, 2010, 03:59:43 PM »
Quote from: Cosmos;595548
>The PPC on average has a slightly lower code density

It's a joke from you ??

Watch this : http://library.morphzone.org/An_Introduction_to_MorphOS_PPC_Assembly


And the first example shows PPC's lower code density:

Offline bloodline

  • Master Sock Abuser
  • Hero Member
  • *****
  • Join Date: Mar 2002
  • Posts: 12113
    • Show all replies
    • http://www.troubled-mind.com
Re: Excitement about NatAmi
« Reply #2 on: November 30, 2010, 04:07:40 PM »
Quote from: Karlos;595568
Unless he meant "slightly" was a joke.

In reality, most object code I've compiled for ppc and 68K shows between a 30-70% size increase in the PPC version. It varies a great deal. In some extreme cases, I've seen object code that's more than twice the size.
Very good point, he is probably unaware of our British sense of understatement :)

Offline bloodline

  • Master Sock Abuser
  • Hero Member
  • *****
  • Join Date: Mar 2002
  • Posts: 12113
    • Show all replies
    • http://www.troubled-mind.com
Re: Excitement about NatAmi
« Reply #3 on: November 30, 2010, 10:40:13 PM »
Quote from: Paulie85;595689
Thanks, I want an updated amiga and I don't know much about the FPGA boards but I was under the impression they were "programmed" to behave like other hardware. That's why I thought it was basically emulation, which made me think I might be better saving some money and getting an Imica from Clusteruk. Many have said this is where the future of the Amiga lies.
It is a bit harsh for people to shoot you down about this! An FPGA Amiga is still an emulation of the original hardware, even though it is not the step by step processor based emulation of something like UAE.

The FPGA I programmed using a language not unlike a normal computer pogramming language, the real difference is that the language is used by the FPGA software to build a logic map of the operation which is then "executed" by small programmable units in the hardware (often little more than logic units, but can have advanced features like adders and memory). The FPGA must be programmed every power on.

I wouldn't mind playing with an FPGA board (like mikej's Replay) to build my own CPU... :)

Offline bloodline

  • Master Sock Abuser
  • Hero Member
  • *****
  • Join Date: Mar 2002
  • Posts: 12113
    • Show all replies
    • http://www.troubled-mind.com
Re: Excitement about NatAmi
« Reply #4 on: December 02, 2010, 02:38:01 PM »
Quote from: JJ;596380
Ahhh the good ol asphyo w**k :)
Did you know I am indirectly responsible for Michael Hutchence takin his own life... True story!

Even weirder is that it is indirectly Amiga related!

Offline bloodline

  • Master Sock Abuser
  • Hero Member
  • *****
  • Join Date: Mar 2002
  • Posts: 12113
    • Show all replies
    • http://www.troubled-mind.com
Re: Excitement about NatAmi
« Reply #5 on: December 03, 2010, 10:28:41 PM »
Quote from: kedawa;596841
This is not specifically a Natami question, but something I've wondered about FPGA clones in general.
How practical would it be to use any leftover space on the FPGA to create a secondary core that mimics a simpler computer, like say a VIC-20, that could run in tandem with the main Amiga core?
That doesn't really make any sense :)