This ECU has been in the bottom of a box for a very long time. There are a few people playing with the H-series engines at present so I'm going to try and get this one running on the bench.
The image below shows the ECU placed on top of a Canadian GV ECU, also from a H25 engined model. The two are very similar despite the EU model being SDL and the Canadian model being OBD2. The wallpaper was there when I moved in!
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1984 Suzuki SJ413K pick up, 1.6 16V Baleno engine 2000 Suzuki Vitara 1.6 8V, many mods 2004 Suzuki Ignis 1.5VVT 4Grip 2006 Suzuki Jimny 1.3VVT JLX+ and many more.