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Tesla Challenge 20: Replica Portalgun

Subject: PORTAL 4 ANNIVERSARY!
From: Carl Tesky <carl@longteng-co-ltd.gd.cn>

Do you know what day it is? SEPTEMBER 19, 2027! The first anniversary of Valve's release of PORTAL 4! I thought it would be a great occasion to sell off millions of portal gun replicas. Anyone is with me?

Subject: Re: PORTAL 4 ANNIVERSARY!
From: Joe (周海涛) <joe@longteng-co-ltd.gd.cn>

I loved Portal 4! Back when Portal 1 was released I knew I was going to fall in love with the series!

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Small hint: Treat the light as a three-state RS latch, independent from the portal opening and closing sounds.

Big hint: Despite the friendly-looking specification, the PGA33X6 probably won't serve you here. Rely on the good old MC6000.

Optimization tip: Some logic gates here and there could be a good idea.