Re-programming IC for Aune mini cd-pro2 transport - diyAudio
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Old 24th April 2012, 09:56 AM   #1
Corpius is offline Corpius  Netherlands
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Default Re-programming IC for Aune mini cd-pro2 transport

Hi,

I own the Mini cd-pro2 transport from Aune.

With some modifications this transport is absolutely a great piece of equipment. The only things I am not satisfied with is the text that is shown on the display when it starts and when the lid is open. Therefore I would like to re-program the IC a bit to adjust this to my own text and perhaps some other parts to. I have quite a lot programming experience with C#, C++ and VB, but I have never programmed an IC, so i might need a little help here.
  1. Which hardware/software IC programmer do I need for this IC?
  2. What is the programming language of this IC?

I found lots of IC programmer's, but can't find anything about the IC itself.
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Old 24th April 2012, 10:07 AM   #2
oshifis is offline oshifis  Hungary
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Any photo from the top with the paper label removed?
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Old 24th April 2012, 10:15 AM   #3
Corpius is offline Corpius  Netherlands
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How stupid of me. Never thought of removing the label

here it is.

AT89S52
24PU
1024A
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Old 24th April 2012, 10:23 AM   #4
oshifis is offline oshifis  Hungary
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I suppose you have the answer since then

Here I found a relevant link:

Part 1: Introduction to 8051 microcontrollers | IKALOGIC
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Old 24th April 2012, 11:46 AM   #5
Corpius is offline Corpius  Netherlands
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Yes I have and thanks for the link.

I bought a Willem EPROM Programmer PCB50B. This should be very suitable for this IC and many others.
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Old 24th April 2012, 12:09 PM   #6
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Quote:
Originally Posted by Corpius View Post
The only things I am not satisfied with is the text that is shown on the display when it starts and when the lid is open.
Not sure if you realise this but this endeavour is either very difficult or impossible. The program memory is most likely protected and you will not be able to simply read and modify the contents. There is of course the option to rewrite everything from scratch, including remote control routines and god knows what else. Not a weekend project.
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Old 24th April 2012, 12:28 PM   #7
oshifis is offline oshifis  Hungary
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I have done "localization" of EPROM a while ago. The primitive method I used was to look for a specific string by using a hex editor, and simply overwrite the string with the same number of characters (padded with spaces if necessary). So the string lengths were not changed, and no rewriting of the pointers was necessary.
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Old 24th April 2012, 12:35 PM   #8
Corpius is offline Corpius  Netherlands
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Didn't know that it could be protected. I'll find out soon enough when I try to read it. But good to know.
The control section is very basic. Just play, stop, forwards, backwards. That's all. But looking at arduino similar code it does indeed involve a lot of programming.

Alway look on the bright side: At least I will have something to do this summer
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Old 24th April 2012, 12:37 PM   #9
Corpius is offline Corpius  Netherlands
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Quote:
Originally Posted by oshifis View Post
I have done "localization" of EPROM a while ago. The primitive method I used was to look for a specific string by using a hex editor, and simply overwrite the string with the same number of characters (padded with spaces if necessary). So the string lengths were not changed, and no rewriting of the pointers was necessary.
Did you do it like this because it was protected?
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Old 26th April 2012, 01:03 PM   #10
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Default AUNE BIG CD PRO

Anyone has built this AUNE transport?

Big CD pro assembly instructions

Andrea
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