Welcome, Guest. Please login or register.

Author Topic: A4000 system soon on eBay!  (Read 3279 times)

Description:

0 Members and 1 Guest are viewing this topic.

Offline da9000

  • Hero Member
  • *****
  • Join Date: Mar 2005
  • Posts: 922
    • Show all replies
Re: A4000 system soon on eBay!
« on: August 01, 2007, 08:06:35 AM »
 :roflmao:

I think DoomMaster/Doomy had intersex with Mil. Spec. condoms and a _fill_in_your_favorite_animal_ and now he's spawned (notice the Doom terminology) little Doomies all over the world.

Now Canada has their own Doomy! Canadians, rejoice! :-D


On another note, I've just installed a QuadCore UltraSparc in my Amiga500. It took a lot of vaseline, but it fitted perfectly - finally. Anyone want to compare benchmarks? :roflmao:

Oh, did I mention that I'm now using RDRAM instead of DRAMs in it? Yeah, RCS did the hack for me. Mil. Spec. screws - I'm positive! Sorry no photos - my camera only has Gigabit ethernet, and right now my Amiga500 Gigabit clockport card (it's a Quiznos, not a Subway...) is burnt, so I can't upload...
 

Offline da9000

  • Hero Member
  • *****
  • Join Date: Mar 2005
  • Posts: 922
    • Show all replies
Re: A4000 system soon on eBay!
« Reply #1 on: August 01, 2007, 09:26:49 PM »
Quote

countzero wrote:
oops. what's the 64mb hack for the A4000 ?


It is as Crumb says, and best described by *the man* himself, David Haynie:

http://groups.google.com/group/comp.sys.amiga.hardware/browse_thread/thread/3726897a6bf1e89a/f180904dfc7d79e8?lnk=gst&q=4000+64mb+haynie&rnum=1#f180904dfc7d79e8

It is possible. While on the other hand, the 8MB ChipRAM jumper does nothing:

http://groups.google.com/group/comp.sys.amiga.hardware/browse_thread/thread/ab575681a29073df/ef9edd7721db27c3?lnk=gst&q=david+haynie+sex+and+free+beer&rnum=1#ef9edd7721db27c3


And one last thing: putting 60ns or 70ns RAM in the Chip RAM slot of an A4000 won't make things faster without a hardware hack to speed up the chipset. Supposedly the A4000 to be sold has this, but I wouldn't be so sure without photos and documentation, as it's a hack that is not common (I've personally not seen a reference to it while reading all the Haynie newgroups mails).
 

Offline da9000

  • Hero Member
  • *****
  • Join Date: Mar 2005
  • Posts: 922
    • Show all replies
Re: A4000 system soon on eBay!
« Reply #2 on: August 02, 2007, 09:38:55 PM »
Quote

eslapion wrote:
Here's a reply from Brian Guralnick:
I did this originally to get access to faster ram modules & lower capicitance loads & shorter RAS-CAS cycle time to allow overclocking of the AGA chipset up to an almost double 50 MHz.


I'd be curious of the method used to do this overclocking. Anyone have any pointers or sites referencing this?

Also, he said the computer has not been on for 9 years - I think it might be necessary before the sale to check the battery for any leaks...
 

Offline da9000

  • Hero Member
  • *****
  • Join Date: Mar 2005
  • Posts: 922
    • Show all replies
Re: A4000 system soon on eBay!
« Reply #3 on: August 02, 2007, 09:53:50 PM »
Quote

Here's a reply from Brian Guralnick:
  I personally verified.  When using a single side 4mb SIMM in the chipram module location, moving both jumpers (J213 & J214) to the 8mb position allows you to see 2mb chipram.


I verified it and it works. Never saw it mentioned anywhere. I wonder if there are any side-effects.