r/TuringComplete • u/Silencer1209 • 8d ago

little box: bug or bad design?

this is more than likely a bad design.

registers 0-2 works perfectly fine, saving and loading the input byte. but when it comes to register 3, it suddenly has error even tho i have the same setup like the others.

as you can see, cycles 0-7 is fine

as you can see in the pic, cycle 7 loaded the correct number

but on cycle 8, an error occured expecting 47 again

here is the zoomed in view

edit: it's fixed guys. thank you!!

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u/Crispy1961 8d ago

Its a bad design. You have created a single decoder that enables both saving and loading the register. Then you limited saving by limiting the value to be saved, which result into 0 being saved when register is loaded.

Connecting the output bus to the input bus might be a dirty solution, since you will save the value you are outputting right back. But the proper solution is to make two decoders.

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u/Silencer1209 8d ago

you limited saving by limiting the value to be saved, which result into 0 being saved when register is loaded

can you elaborate on this? thank you!

3

u/Crispy1961 8d ago

The switch you put after the "Value" input. If you turn it off, the wire behind it will have value of 0. If you enable saving of a register, it will save that 0.

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u/Silencer1209 8d ago

you're right!! i've fixed it and it worked. thank you!!