Leaderboard

There's very little info on this tech, certainly no diagrams but there was a test rig although I've never seen it. I was going to draw out the diagram as a winter project but it's a time consuming process and I haven't managed to get round to it as yet. You've probably seen this already but .....https://www.fruitemu.co.uk/ib/topic/24456-barcrest-lsi-tech/

This should be the rotary hold timer, I say should as sometimes units were converted to another use on machine rebuilds.. There should be a wired switch that a red notched cam (wheel) operates as the timer turns, it's that switch that flashes the hold lamps.

Hi chaps, Here's a bit of a blinder, a really good nick LSI chassis. Rarer than hens teeth! Now you maybe thinking where's the RAM, where does the ROM cart go and where's all the support chips? It must all be done with the ZNA129 chip. I can't find any information on this one and even the stuff that RIche has posted doesn't have a schematic which is a shame. You have assume that it would only ever play the one game without re-soldering the chip as it must be programmed at the factory. I'm sure the smarter folks out there will correct me if that's not the case. The beauty with these old boards is there's no battery so no corrosion. I might have a go at drawing out the schematic if I get the time (and enthusiasm). It's certainly a fascinating tech probably one of the first to go digital.