CRG | Amiga 1200 adding an FPU to the TF1230 *sort of* @CRG | Uploaded July 2022 | Updated October 2024, 7 hours ago.
Back under the hood of the Amiga 1200 this week as I try to add an FPU to my TF1230 build. As you know there's no FPU socket on that accelerator but Commodore left a blank spot on the motherboard (U0) for that very thing so lets see if we can get it working.

The idea for this came from discussion on GadgetUKs discord (channel link below) which in turn came from discussion over on the EXXOS forums.

Amiga Schematics - amigawiki.org/doku.php?id=en:service:schematics
Amiga PCB Explorer - amigapcb.org
ChaosPro fractal generator - aminet.net/package/gfx/fract/ChaosPro
JCM Demo - ada.untergrund.net/?p=demo&i=691
Ikanim Demo - ada.untergrund.net/?p=demo&i=358
Impossible Demo - ada.untergrund.net/?p=demo&i=62
GadgetUKs channel - youtube.com/c/GadgetUK164

end theme - A Prehistoric Tale (1990) main theme by Jochen Hippel
CRG twitter - twitter.com/YT_CRG
CRG patreon - patreon.com/user?u=13919007&fan_landing=true

Chapters
00:00 Intro
02:14 Installing the socket and FPU
08:11 Is it another refinished chip?
09:14 First test
11:33 Lets double the speed
17:16 Testing at 28mhz
18:57 Pushing the clock and our luck
20:21 Testing at 60mhz
24:58 OK, what about 54mhz?
26:43 JCM Demo
28:45 Drawing a fractal
29:41 Conclusion and credits