Welcome, Guest. Please login or register.

Author Topic: A3000/4000 1MB ROM Mod  (Read 1519 times)

Description:

0 Members and 1 Guest are viewing this topic.

Offline SpeedGeekTopic starter

A3000/4000 1MB ROM Mod
« on: November 02, 2011, 11:31:39 PM »
« Last Edit: October 27, 2020, 01:36:02 PM by SpeedGeek »
 

Offline bbond007

  • Hero Member
  • *****
  • Join Date: Mar 2009
  • Posts: 1517
    • Show only replies by bbond007
Re: A3000/4000 1MB ROM Mod
« Reply #1 on: November 03, 2011, 12:05:06 AM »
Quote from: SpeedGeek;666309
Here is link to this thread:
http://www.amibay.com/showthread.php?p=229959#post229959

Very cool!

I think the CD32 already has a 1MB rom and I think I read the 1200 can take one without any mods.

http://www.amibay.com/showthread.php?t=11935

A600, A1200 and CD32 definitely can without mods.
« Last Edit: November 07, 2014, 02:12:59 PM by F0LLETT »
 

Offline SpeedGeekTopic starter

Re: A3000/4000 1MB ROM Mod
« Reply #2 on: November 05, 2014, 03:27:27 PM »
** NEWS UPDATE **

Romy Rev. 10 has been released!

Here is some revision update info:

- New state machine logic replaces counter + flip-flop logic
- REG2 was eliminated and is now a free I/O pin
- STERM and DSTERM outputs are asserted for 2 clocks to provide more reliable operation on timing modified systems
- 4MB version address range moved to $01000000-$013FFFFF (should work with exec v45.20 without any patching!) ;)