English Amiga Board

Go Back   English Amiga Board > Support > support.Hardware > Hardware pics

Thread Tools
Old 09 February 2008, 20:47   #1
Registered User
Join Date: Aug 2007
Location: USA
Posts: 285
Modified A2386SX for Zetr0

I'm new here, but I thought I would throw this up for Zetr0. He seems to like hardware as much as I do. It's an A2386SX-20 with the Cyrix 486 upgrade, socketed clock oscillator, and coin cell/diode hack.


Perhaps someone can help me with the Bios modifications for 16MB. See the thread at Amiga.org for details.


Attached Thumbnails
Click image for larger version

Name:	A2386SX.jpg
Views:	1261
Size:	270.0 KB
ID:	15873  
Magic is offline  
Old 10 February 2008, 00:36   #2
Ya' like it Retr0?
Zetr0's Avatar
Join Date: Jul 2005
Location: United Kingdom
Age: 45
Posts: 9,768


see my reputation proceeds me!!!!

thats a fine hack indeed!

hmmm insofar as upgrading to 16MB.... perhaps using a bios boot rom a latent 486slc card ???

this linkie might help



Welcome to the EAB
Zetr0 is offline  
Old 10 February 2008, 00:52   #3
Join Date: Oct 2004
Location: Ioannina/Greece
Posts: 5,040
BBOAH says this:

RAM: 1MB (Expandable to 8MB with ZIPs, 16MB with a ZIP to SIMM converter)

seems like a very difficult task... I doubt that by taking a "bios" from a GG card this will work... even if u could, it would not work either...
and if you think of it, nothing that runs on a 386sx/486slc/486slc2 would require more than 8MB RAM... even DOOM that is it's high-end game IMHO is happy with 8MB , plus it is crappy on even a 486slc2/50mhz bridgeboard.... I have one , I know!

you get the following speed, that it's just not enough....

keropi is offline  
Old 10 February 2008, 03:57   #4
hastala vista winny vista
coze's Avatar
Join Date: Feb 2006
Location: mt fuji
Age: 42
Posts: 1,335
Send a message via ICQ to coze Send a message via Yahoo to coze
There was a hack at aminet about this ... hmm can't remember right now, but you had to dump the rom, change some bits and write it back I guess ... Hope you have a rom burner handy.
coze is offline  
Old 22 August 2008, 21:35   #5
Registered User
aperez's Avatar
Join Date: Aug 2008
Location: San Francisco Bay Area
Posts: 92
I have a firmware programmer

If either of you would like to pursue this, I have a firmware programmer available which can definitely read/write to the EPROMS. I can also source some EPROMS if the C= ROMS are true ROMS.

Let me know, zetro et al.
aperez is offline  
Old 22 August 2008, 23:31   #6
Ya' like it Retr0?
Zetr0's Avatar
Join Date: Jul 2005
Location: United Kingdom
Age: 45
Posts: 9,768

Hello there, Welcome to the EAB

theres plenty of retr0licious mischief to get up to

Alas I don't have an Golden Gate SBC although any help you can offer those that do I am sure they would really appreciate it
Zetr0 is offline  
Old 23 August 2008, 14:17   #7
Join Date: Oct 2004
Location: Ioannina/Greece
Posts: 5,040
386sx class cpu's (including the 486slc ones) cannot address more than 16MB of RAM.
keropi is offline  

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
A2000 A2386SX BridgeBoard & ATX-PSU Adapter amigoun support.Hardware 9 08 April 2013 23:16
FS: A2386SX BridgeBoard, Picasso2+, DCTV NTSC coze MarketPlace 3 19 July 2007 19:58
A2386SX bridgeboard software request coze request.Apps 1 16 July 2007 21:04
Terrorliner (Modified) aubergine request.Old Rare Games 3 30 January 2006 14:26
Terrorpods (not modified) sborat request.Old Rare Games 6 25 July 2001 11:06

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 11:46.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Page generated in 0.07222 seconds with 14 queries