English Amiga Board - View Single Post - Upgrading Apollo 1240 to 1260 a definitive How To Guide

Dimlow · 15 June 2008, 02:40

Today, i purchase two Apollo 1240 40Mhz cards for the Amiga 1200. One of them is busted and i will have a go at repairing it. But i got looking on the forums about converting these cards to 1260's, and could not find a complete and full description of how its done. Just lots of information spread all over the net. Not all if it useful and some of it misleading.

I'm pretty good with electronics and i spend a lot of time making my own PCBs, making things with pic chips and programming eproms, etc. I enjoy hacking hardware. My soldering skills are quite good, i have not managed to bugger anything up yet! I'm guessing that there are other people here that are also interested in this mod.

So , yes, i know that there are people that can do it for me (PG amiga.org) etc, but this task can't really be that difficult. A little scary maybe, but not difficult. So what I'm looking for is a "how to", complete with pictures and full descriptions, hex files for the eproms, even a PCB layout / circuit diagram for the voltage regulator board. How to de-solder and fit the CPU socket and so on

We could make this thread into the "how to". So what I'm not looking for is a list of links to other posts ( unless of course i have already missed the thread with the complete info. An please no do a search posts, i have done that already.

I do have an incentive in mind, for the person that commits the most to this thread, but at the moment, I'm not sure that i should go ahead with it.

Anyway lets get started......

EDIT

i have made a photo album with almost all the detail you need to upgrade the 1240 to a 1260 @80 MHz, it has comments detailing each step.

http://picasaweb.google.com/Dimlow/A...adeTo126080Mhz

15 June 2008, 02:40	#1
Dimlow Likes to be thought of as Join Date: May 2008 Location: Kent,UK Age: 55 Posts: 529	Upgrading Apollo 1240 to 1260 a definitive How To Guide Today, i purchase two Apollo 1240 40Mhz cards for the Amiga 1200. One of them is busted and i will have a go at repairing it. But i got looking on the forums about converting these cards to 1260's, and could not find a complete and full description of how its done. Just lots of information spread all over the net. Not all if it useful and some of it misleading. I'm pretty good with electronics and i spend a lot of time making my own PCBs, making things with pic chips and programming eproms, etc. I enjoy hacking hardware. My soldering skills are quite good, i have not managed to bugger anything up yet! I'm guessing that there are other people here that are also interested in this mod. So , yes, i know that there are people that can do it for me (PG amiga.org) etc, but this task can't really be that difficult. A little scary maybe, but not difficult. So what I'm looking for is a "how to", complete with pictures and full descriptions, hex files for the eproms, even a PCB layout / circuit diagram for the voltage regulator board. How to de-solder and fit the CPU socket and so on We could make this thread into the "how to". So what I'm not looking for is a list of links to other posts ( unless of course i have already missed the thread with the complete info. An please no do a search posts, i have done that already. I do have an incentive in mind, for the person that commits the most to this thread, but at the moment, I'm not sure that i should go ahead with it. Anyway lets get started...... EDIT i have made a photo album with almost all the detail you need to upgrade the 1240 to a 1260 @80 MHz, it has comments detailing each step. http://picasaweb.google.com/Dimlow/A...adeTo126080Mhz Last edited by Dimlow; 13 May 2009 at 08:56.