/vr/ - Retro Games

>>3951206
They probably realized their PCB design suffered from noisy lines after production and had to add a capacitor (to A12 or A13?) to smooth things out over those tiny inductive traces, and a pull up(?) resistor on the Inverted Chip Enable line to keep their ROM off the bus when it wasn't supposed to be on it (ie when something else is on the bus). In a naive design, these elements look redundant, so amateurs would only realize there is a problem once they have a physical implementation in hand.

It looks cheap, but you'd be surprised at how much retro hardware had small hacks like this after production.

Btw, how would you guys like to see a music tracker program on an NES or SNES to make chiptunes. Sorta like a roided out Mario Paint?