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Author Topic: fusion forty problems  (Read 6386 times)

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Offline ShK

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Re: fusion forty problems
« Reply #44 from previous page: May 16, 2017, 10:05:49 AM »
Does anyone know why these mods are done? One of the U4 pins is bent up and U53 is removed.

https://postimg.org/image/9a446cv73/
https://postimg.org/image/h44prr2zz/

Fusion Forty does not boot at all if the fastkick is disabled (because of this modification?). Otherwise it seems to work normally.
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Offline utri007

Re: fusion forty problems
« Reply #45 on: May 16, 2017, 09:18:03 PM »
Quote from: ShK;825821
Does anyone know why these mods are done? One of the U4 pins is bent up and U53 is removed.

https://postimg.org/image/9a446cv73/
https://postimg.org/image/h44prr2zz/

Fusion Forty does not boot at all if the fastkick is disabled (because of this modification?). Otherwise it seems to work normally.


Maybe these are helpfull?
http://www.lundblad.com/mattias/f40.html
http://www.lundblad.com/mattias/F40-FAQ.txt
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Offline ShK

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Re: fusion forty problems
« Reply #46 on: May 17, 2017, 05:38:45 AM »
Tnx. I could not find from links what the benefits U4 and U53 modification brings.
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Offline mechy

Re: fusion forty problems
« Reply #47 on: May 18, 2017, 04:28:40 AM »
Quote from: pyrre;809671
An aged old thread...
But i have found a probable reason to why the fusion forthy does not work in my amiga 2000.
My amiga 2000 is a rev. 4.0 motherboard. And most likely not compatible with any accelerator made for the cpu fast slot.

Anyone got any A2K motherboard for sale?

Commodore modded many boards up to 6x.. you can prob. mod your board to at least 4.5 and all should work.
rev4.0 was pretty bad compatibility wise.

Not sure if it applies, but there were 2k refresh(common mac simms) and 4k refresh simms and the FF may be picky about this.

The early A2000's had a buster chip made by toshiba, some of these were problematic, replace with the CSG version may help
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Offline pyrreTopic starter

Re: fusion forty problems
« Reply #48 on: May 18, 2017, 08:22:37 AM »
Quote from: mechy;825899
Commodore modded many boards up to 6x.. you can prob. mod your board to at least 4.5 and all should work.
rev4.0 was pretty bad compatibility wise.

Not sure if it applies, but there were 2k refresh(common mac simms) and 4k refresh simms and the FF may be picky about this.

The early A2000's had a buster chip made by toshiba, some of these were problematic, replace with the CSG version may help
Not sure how you would attack the rev 4.0 MB for upgrading it. It lacks some of the more modern logics. as far as i can tell, there is no buster chip on them at all...
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