ClintonGoodfellow
Active member
Hi,
I've always thought for some reason that my old LC was a III+ but it turns out its a standard 25mhz LC III.
Disappointed but I remembered about the resistor mod, so I thought I'd look into it.
Following this tutorial - http://www.applefool.com/clockchipping/lciii.html , the mod is very straight forward, but it does raise a couple questions.
From looking at the logic board I can see there is a MC68030FE16B installed (pic attached) instead of the -FE25B I expected to be there. The machine reports as a 25mhz machine even with this apparent 16mhz processor installed.
The question is, if I moved the jumper (0ohm resistor) on the board to enable 33mhz would this work with the installed processor? Also should I be looking to put a heatsink on some of the chips, will there be excess heat?
I'm also wondering why this processor is on the board as its clearly an LCIII logic board, maybe its been factory modified by Motorola due to a shortage of the 25mhz ones? Who knows?
Hope you folk can shed some light on this, as I'm not sure whether to test it or not.
Cheers.
I've always thought for some reason that my old LC was a III+ but it turns out its a standard 25mhz LC III.
Disappointed but I remembered about the resistor mod, so I thought I'd look into it.
Following this tutorial - http://www.applefool.com/clockchipping/lciii.html , the mod is very straight forward, but it does raise a couple questions.
From looking at the logic board I can see there is a MC68030FE16B installed (pic attached) instead of the -FE25B I expected to be there. The machine reports as a 25mhz machine even with this apparent 16mhz processor installed.
The question is, if I moved the jumper (0ohm resistor) on the board to enable 33mhz would this work with the installed processor? Also should I be looking to put a heatsink on some of the chips, will there be excess heat?
I'm also wondering why this processor is on the board as its clearly an LCIII logic board, maybe its been factory modified by Motorola due to a shortage of the 25mhz ones? Who knows?
Hope you folk can shed some light on this, as I'm not sure whether to test it or not.
Cheers.