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Author Topic: Amiga 4000 ROM replacement question  (Read 1790 times)

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Offline TheretrogamingroomTopic starter

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Amiga 4000 ROM replacement question
« on: March 08, 2013, 03:00:26 AM »
I am upgrading my A4000D ROMs from 3.0 to 3.1. So far, I have taken the old ROM out and I am ready to install the new ROM, but I am not sure which Chips go where. One says "A4000 V175" and the other says "A4000 V176".

These were the ones that were already installed:

In D16-D31: 9246 23C2100-1041 319513-02
In D0-D15: 9242 23C2100-1042 319514-02

Any ideas?

Thanks

EDIT: Just found the text printed on the board. Amazing what you can find by removing 20 years of dust!
« Last Edit: March 08, 2013, 03:06:24 AM by Theretrogamingroom »
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Commodore 8-Bit: Vic-20, Plus/4, C16, C64, C128
Amiga: 500, 2000HD, 2500, 4000D+VT4K+Flyer
 

Offline danbeaver

Re: Amiga 4000 ROM replacement question
« Reply #1 on: March 08, 2013, 07:41:25 PM »
I think that it says "U175 & U176" and if the notch is oriented correctly, then you have a 50% chance of getting right the first time and a 100% chance on the second try.
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Offline AmigaClassicRule

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Re: Amiga 4000 ROM replacement question
« Reply #2 on: March 08, 2013, 07:57:16 PM »
Quote from: danbeaver;728601
I think that it says "U175 & U176" and if the notch is oriented correctly, then you have a 50% chance of getting right the first time and a 100% chance on the second try.

:roflmao::roflmao::roflmao::roflmao::roflmao: :roflmao:   :lol:

Literally the best answer I have ever seeing in any post!!!
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