29 September 2007, 12:16 | #1 |
Registered User
Join Date: Aug 2007
Location: Kirkcaldy, Scotland
Posts: 15
|
Amiga 1200 Kickstart Upgrade - Problem
Got some Kickstart3.1 chips from eBay. Am trying to install them in the A1200. Can not seem to remove the old chips. I *thought* they were easily removable but they seem to be glued in with superglue
Do I need special tools or is there something obvious I am missing ? Motherboard Revision 10.4. Thanks for any help. Douglas |
29 September 2007, 12:50 | #2 |
Targ Explorer
|
They are tough wee buggers!
I used a flat head screwdriver and levered them from alternate ends. It is a terrifying experience! Be aware that the sockets are Bigger than the ROM chips (1 extra pair of holes) Be sure that the new ROMS go back in the exact same sockets as the Old ones. |
29 September 2007, 13:42 | #3 |
Still an Amiga user
Join Date: Nov 2006
Location: Kent
Age: 55
Posts: 2,715
|
Some are very tight indeed... DDNI is dead right when he says lever them very gently from either end with something very flat - so as you can get under them... eventually they will give and come out... cross fingers.
Take your time - this can be a one way ticket job. |
29 September 2007, 13:46 | #4 |
Registered User
Join Date: Aug 2007
Location: Kirkcaldy, Scotland
Posts: 15
|
Thanks for the quick reply Any way to tell which goes top and which goes bottom? Or does it not matter ?
|
29 September 2007, 14:59 | #5 |
Blessed A1200 Of TeH Rat
Join Date: Aug 2007
Location: Bham, UK
Age: 42
Posts: 496
|
Theres a small half circle at one end of the chip, that goes to where the white arrow is on the motherboard, BEHOLD my bad art work :
Next to the crystal furthest away from the expanstion slot, hope the pic gives you some idea. |
29 September 2007, 15:18 | #6 |
Targ Explorer
|
Make sure you put the correct ROM in the correct socket! They arent interchangable!!!
|
29 September 2007, 17:20 | #7 |
Registered User
Join Date: Aug 2007
Location: Kirkcaldy, Scotland
Posts: 15
|
Well I got the old ones out. They are now sadly useless as a fair amount of brute force was required.
I need to make sure the chips go in the right sockets. They have numbers J9543 / 391774-01 on one and J9542 / 391773-01 on the other. Any ideas ? Tried zooming in to your pic but sadly too blurred |
29 September 2007, 18:28 | #8 |
Registered User
Join Date: Aug 2004
Location: www.amigakit.com
Posts: 2,039
|
391774-01 goes on the top in U6B
391773-01 goes on the bottom in U6A Be careful - the Kickstart 3.1 ROMs are shorter than the kickstart 3.1 ROM sockets so they should be offset to the right of the socket. |
29 September 2007, 19:50 | #9 |
Registered User
Join Date: Aug 2007
Location: Kirkcaldy, Scotland
Posts: 15
|
I found a picture on Amiga Hardware where I could just make out the numbers. Is now working very well thank you very much. Thanks to everyone I was expecting to find a plethora of guides on the upgrade via Google, but there do not seem to be many with much detail beyond pop out the old pop in the new.
Douglas |
29 September 2007, 21:08 | #10 |
Registered User
Join Date: Mar 2007
Location: UK
Posts: 181
|
BTW anyone want any 3.0 Roms, I've got a couple spare, couple of 1200 and 1 set of 4000s
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
dbk 1240 amiga 1200 (Kickstart Remaping) | sebmacfly | support.Hardware | 11 | 08 March 2023 18:22 |
Amiga 1200 motherboard FPU upgrade? | Steve T | Hardware mods | 23 | 19 April 2022 20:46 |
Amiga 1200 kickstart 3.1 | beanz | Amiga scene | 2 | 27 March 2012 18:32 |
F/S - 8mb Trapdoor Ram Upgrade - Amiga 1200 | fitzsteve | MarketPlace | 3 | 05 April 2011 21:58 |
3.1 Kickstart AMIGA 1200 | sebmacfly | MarketPlace | 0 | 17 February 2009 16:25 |
|
|