Click Here
home features news forums classifieds faqs links search
6071 members 
Amiga Q&A /  Free for All /  Emulation /  Gaming / (Latest Posts)
Login

Nickname

Password

Lost Password?

Don't have an account yet?
Register now!

Support Amigaworld.net
Your support is needed and is appreciated as Amigaworld.net is primarily dependent upon the support of its users.
Donate

Menu
Main sections
» Home
» Features
» News
» Forums
» Classifieds
» Links
» Downloads
Extras
» OS4 Zone
» IRC Network
» AmigaWorld Radio
» Newsfeed
» Top Members
» Amiga Dealers
Information
» About Us
» FAQs
» Advertise
» Polls
» Terms of Service
» Search

IRC Channel
Server: irc.amigaworld.net
Ports: 1024,5555, 6665-6669
SSL port: 6697
Channel: #Amigaworld
Channel Policy and Guidelines

Who's Online
26 crawler(s) on-line.
 142 guest(s) on-line.
 0 member(s) on-line.



You are an anonymous user.
Register Now!
 Gunnar:  43 mins ago
 pixie:  1 hr 2 mins ago
 DiscreetFX:  1 hr 41 mins ago
 DWolfman:  1 hr 51 mins ago
 cncparts:  3 hrs 24 mins ago
 saipaman4366:  4 hrs 10 mins ago
 Beajar:  4 hrs 29 mins ago
 Rob:  4 hrs 32 mins ago
 agami:  5 hrs 35 mins ago
 RobertB:  5 hrs 55 mins ago

/  Forum Index
   /  Classic Amiga Hardware
      /  A2000 board revision
Register To Post

PosterThread
SydneyBloom 
A2000 board revision
Posted on 15-Nov-2015 17:55:14
#1 ]
Member
Joined: 23-Sep-2008
Posts: 64
From: Norway

The A2k was never a favourite of mine, but I have a couple lying around. So I started the process of collecting bits and pieces to get one up and running.
I have two mainboards, both revision 6. But one of them has this card soldered in place solder side up, while the other one has two IC's (and silkscreen for two additional IC's).



So just curious whats this is all about, since it's the same revision.

Last edited by SydneyBloom on 15-Nov-2015 at 05:55 PM.

_________________
Welcome to the game

 Status: Offline
Profile     Report this post  
QuikSanz 
Re: A2000 board revision
Posted on 15-Nov-2015 22:26:06
#2 ]
Super Member
Joined: 28-Mar-2003
Posts: 1236
From: Harbor Gateway, Gardena, Ca.

@SydneyBloom

BboAH shows nothing but, I seem to remember seeing this before.

Chris

 Status: Offline
Profile     Report this post  
Amiga_3k 
Re: A2000 board revision
Posted on 16-Nov-2015 5:58:07
#3 ]
Cult Member
Joined: 17-Jun-2006
Posts: 833
From: Ohrid, Macedonia

@SydneyBloom

It seems to be the Tokuda Tower. This tower allows the use of Static Column RAM whereas without this tower only Fast Page Mode RAM can be used. Don't ask for details, don't have them. Just found the board on Amigawiki. Article in German: www.amigawiki.de.

By the way, while Commodore had several main revisions of the mainboards, there were sub-revisions as well.

Last edited by Amiga_3k on 16-Nov-2015 at 05:59 AM.

_________________
Back home...

 Status: Offline
Profile     Report this post  
SydneyBloom 
Re: A2000 board revision
Posted on 16-Nov-2015 8:25:52
#4 ]
Member
Joined: 23-Sep-2008
Posts: 64
From: Norway

@Amiga_3k

Thank you for this.

Found some interresting stuff on Static Column ram vs Page Mode ram on google books.
In short the only difference in the two ram types are that the Static column is a bit more intelligent regarding addressing and might be slightly faster, consumes a little less power and it keeps it's information without beeing "refreshed" at regular intervals.

But if it makes any difference in the A2k I don't know, might just be that this chips was a good idea due to logistics etc.

But interresting to see this small HW differences.

_________________
Welcome to the game

 Status: Offline
Profile     Report this post  

[ home ][ about us ][ privacy ] [ forums ][ classifieds ] [ links ][ news archive ] [ link to us ][ user account ]
Copyright (C) 2000 - 2019 Amigaworld.net.
Amigaworld.net was originally founded by David Doyle