English Amiga Board


Go Back   English Amiga Board > Support > support.Hardware

 
 
Thread Tools
Old 06 September 2017, 19:06   #1
Sanxion
Registered User

 
Join Date: Jul 2017
Location: Burnley / England
Posts: 101
What is this expansion board?

Hi all

I have just taken delivery of my new Amiga 2000... but in the process of "cleaning" it, I have managed to disconnect the two wires for the on/off switch on this expansion board. The problem is that I have no idea where they are supposed to go or what this card does.

Any ideas?!
Attached Thumbnails
Click image for larger version

Name:	1504717504173436317860.jpg
Views:	72
Size:	506.2 KB
ID:	54496  
Sanxion is offline  
AdSense AdSense  
Old 06 September 2017, 19:12   #2
Akira
Registered User

Akira's Avatar
 
Join Date: May 2001
Location: New York
Posts: 19,265
Zorro II 8MB RAM:
http://www.bigbookofamigahardware.co...t.aspx?id=1032
Akira is offline  
Old 06 September 2017, 19:48   #3
Sanxion
Registered User

 
Join Date: Jul 2017
Location: Burnley / England
Posts: 101
Thanks...and this one?
Attached Thumbnails
Click image for larger version

Name:	15047196236161999327245.jpg
Views:	60
Size:	487.2 KB
ID:	54497  
Sanxion is offline  
Old 06 September 2017, 19:53   #4
th4t1guy
Registered User
th4t1guy's Avatar
 
Join Date: Mar 2002
Location: Kansas City, MO, USA
Posts: 591
That looks like a gvp scsi card.
th4t1guy is offline  
Old 06 September 2017, 20:09   #5
Sanxion
Registered User

 
Join Date: Jul 2017
Location: Burnley / England
Posts: 101
With more memory?
Sanxion is offline  
Old 06 September 2017, 20:37   #6
Daedalus
Registered User

Daedalus's Avatar
 
Join Date: Jun 2009
Location: Dublin, then Glasgow
Posts: 3,026
Yep, that can also be fitted with 8MB of RAM... But you can only have up to 8MB in total, so you can't use both at the same time unless the total adds up to 8MB or less. I can't tell how much is actually fitted, but those 30-pin SIMMs are typically either 256KB or 1MB each. Perhaps the jumper settings (up near the RAM at the top of the card) might help determine how much is installed.
Daedalus is offline  
Old 06 September 2017, 20:38   #7
Matt_H
Registered User
Matt_H's Avatar
 
Join Date: Jul 2008
Location: Boston, MA
Posts: 155
I have one of those 8-Up cards - there's no switch on mine. My guess is that a previous owner installed it to disable some of the RAM as needed.
Matt_H is offline  
Old 10 September 2017, 21:46   #8
thebajaguy
Registered User

 
Join Date: Mar 2017
Location: Philadelphia / United States
Posts: 38
Second pic is a GVP Series II HC8. Memory populates from the front edge of the card in pairs of 1MBx8 SIMMs. Jumper settings on all revision cards are identical, with 0/2/4/6/8MB settings (& all but earliest models have a 2x4MB SIMM setting for 8MB configuration, too) The memory in that second pic is in the slots, so maybe just a holding point. Benefit of using the GVP HC8 memory is DMA to onboard RAM is less intrusive to the CPU when the destination is that memory and the CPU needs to be busy elsewhere (OS housekeeping). If there was 8MB on the Supra card, then they probably disabled all the RAM on the GVP if they didn't have enough memory of that type.
thebajaguy is offline  
AdSense AdSense  
 


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Expansion board for the CD32 kipper2k Hardware mods 3394 06 July 2018 14:46
Please help identify this expansion board MrX_Cuci New to Emulation or Amiga scene 2 02 October 2015 16:52
What kind of expansion board is that ? salocinx Hardware pics 12 01 January 2015 09:29
Tell me about my expansion board. gazj82 support.Hardware 7 22 March 2014 23:25
an expansion board toolkit --might be useful to you giannis_vassili support.Hardware 1 14 June 2008 20:51

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +2. The time now is 08:36.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Page generated in 0.93521 seconds with 16 queries