Adventures of the Overclocked NES - Video #3

This time a game with no improvement. Mike Tyson's Punch-Out!!

MMC2 (the memory controller chip used by this game) is compatible with the overclock, and this video shows it. I state this for it's reliability on latching "FD" and "FE" on the bus (sneaky method used to bankswitch gfx), which still works, even though there is a potential for de-syncing...also why the cut scene is shown (idk if the latches are used there though)

Category:

Entertainment

Tags:

• overclock
• nes
• nintendo
• mike
• tyson
• punch
• out
• punch-out!!

[derkman127]

why u want to overclock? pointless

[AWalYT]

Some games that stress the NES's CPU can cause the console to slow down a tad. This resolves this in most games (Kirby's Adventure and SMB 3 are fairly good examples).

[bibinson]

@AWalYT isn't it the PPU, not the CPU, that usually is overclocked to fix the lag from having too many sprites on screen at once?

[AWalYT]

@bibinson The NES's PPU has a strict limitation of only displaying 8 simultaneous sprites on a single scanline (each sprite consisting of 8 pixels in width). Since the PPU takes no longer ammount of time to process any ammount of graphic data, there is no need to modify the clock rate of it. The reason the system tends to benefit when the the CPU is overclocked is because of the aditional information processed when aditional unanticipated sprites are onscreen (collision checks, motion, AI, etc.)

[bibinson]

@AWalYT I see, the confusion stemmed from the fact that I thought the PPU generated the audio. 

[AWalYT]

@bibinson Indeed, the NES uses circuity know as a pAPU or Pseudo-Audio Processing Unit. The sound is actually generated by r/c circuitry built into the CPU itself. AAMOF, the outputs of the pAPU can be tapped as well, With Pin 1 of the CPU providing the two square-wave generation channels, and Pin 2 supplying the latter (triangle-wave, noise, and DMC/PCM/pAPU bias).

[classicmacintosh]

@orgntr 1 month old comment but for the record, 'to overclock' usually means run something at a higher speed than it originally ran at. For example, I overclocked my desktop PC from 2.26GHz to 3GHz by increasing the multiplier (basically the multiplier "tells" the CPU how fast (or slow :D) it should consider 'normal', so the CPU will try to run at that speed. Have a look at Wikipedia to enlighten yourself further in the matter.

[orgntr]

wtf do you mean by overclock???

[sonicepochguy]

The sound generator on the NES is clocked with the CPU, actually making it sound higher in pitch.  As for whether it sounds "better" is sort of the ear of the beholder.

[jorgabmom]

how come the music's tune sounds better than usual?

[derkman127]

ow ok thx :D