> Hi everyone, my name is Dimitri, > this is a bit off-topic since it's not related to MAME, but I believe you can help me > here. > I'm trying to understand how a circuit I own works. It uses many 7400 and 4000 series > logic, and my aim is to emulate its functions using a microcontroller. I'm a > programmer but quite poor with digital electronic. > I was wondering if there were a simple way to simulate this circuit on my computer in > order to understand the logic involved. > Essentially it is an audio echo machine from '80s: the analog audio is converted to > digital (with a SAR + DAC), then stored into DRAM and converted back to digital after > some time. The part that I'm trying to simulate is the DRAM controller and the logic > needed to start-stop the conversion. > I tried LTSpice and Proteus ISIS but I wish there was a simpler and more friendly > software. > Thanks and sorry for my english. > Dimitri
Sounds interesting!
Could you post a circuit diagram?
Thanks, Phil
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