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AuthorTopic: How to know what revision motherboard?  (Read 1058 times)

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Offline tippieislief

How to know what revision motherboard?
« on: May 03, 2020, 04:08:20 PM »
Greetings earthling, I am from Mars and I come to takeover.
Recently I bought a 2MB expansion for AMIGA500. For a correct installation I need to know what revision motherboard I have. How do I know?
To enable the function of 1MB of CHIP RAM, the Agnus 8372 is required. What is "Agnus 8372" Is it something I need to purchase?
My next stop is Venus.
 

Offline TribbleSmasher

Re: How to know what revision motherboard?
« Reply #1 on: May 03, 2020, 04:23:18 PM »
There is no other way than open her up and have a look inside.
 
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Offline tippieislief

Re: How to know what revision motherboard?
« Reply #2 on: May 03, 2020, 04:47:56 PM »
 Thank you very much. Do you also know what an AGNUS 8372 is?
 

Offline TribbleSmasher

Re: How to know what revision motherboard?
« Reply #3 on: May 03, 2020, 04:58:18 PM »
Agnus is one of the chipsets most important one. the number tells you it is a revision from the Enhanced Chipset, so it is newer and better than the version from the Original Chipset.

https://en.wikipedia.org/wiki/Original_Chip_Set
https://en.wikipedia.org/wiki/Enhanced_Chip_Set
 
The following users thanked this post: tippieislief

Offline tippieislief

Re: How to know what revision motherboard?
« Reply #4 on: May 03, 2020, 05:04:18 PM »
I like you. Come visit my planet. I will search out the links you gave me.
 

Offline tippieislief

Re: How to know what revision motherboard?
« Reply #5 on: May 03, 2020, 05:17:27 PM »
Hello! See my former reactions. The installation guide says about "add 512KB of extra CHIP RAM", "Please, note to enable this function (1 MB of CHIP RAM), the Agnus 8372 is required,..."
What do I have to do?
 

Offline TribbleSmasher

Re: How to know what revision motherboard?
« Reply #6 on: May 03, 2020, 05:21:43 PM »
You have to look inside what number is printed on the big square chip to be sure.

https://lyonsden.net/upgrade-amiga-a500-1mb-chip-ram/
« Last Edit: May 03, 2020, 05:23:20 PM by TribbleSmasher »
 

Offline tippieislief

Re: How to know what revision motherboard?
« Reply #7 on: May 03, 2020, 05:36:42 PM »
Thanks again.  It is a very helpful video.
Now I know. Thanks. I have to open the machine and check out. So I need the named chip. I have to look to see what AGNUS I have. Is that correct?
I bring you with my UFO free to the moon.
 

Offline tippieislief

Is it compatible?
« Reply #8 on: May 05, 2020, 10:23:47 AM »
Hello! Is Kickstart ROM 3.1 compatible with the game Nighthawk 117a? I have an A500 also I have a not yet installed 2MB memory expansion from which 512 FAST RAM.