Inside the Super Nintendo cartridges • Hacker News Board

Re: Inside the Super Nintendo cartridges

#171

Post by SEXMCNIGGA28119 » Mon, Apr 22, 2024, 9:17 PM UTC

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Re: Inside the Super Nintendo cartridges

#172

Post by nicole_express » Mon, Apr 22, 2024, 9:21 PM UTC

xcv123 wrote: post #159

nicole_express wrote: post #103

Earlier quoted context omitted.

The thing that blows my mind about the SNES is that even its onboard RAM can't be accessed at the nominal 3.58MHz clock; the system slows down for that. Always confused me why the SNES was so paltry with its speed when the competitor TurboGrafx-16 usually ran at 7MHz, and also had a 6502-family CPU that required similar memory timing. But the TurboGrafx flopped (in the west) and the SNES was a hit world-wide, so I gu…

The SNES has a 65C816. That's a 16 bit CPU, not a 6502. It can process more data per clock cycle than the 8-bit 65C02 in the TurboGrafx.

This is irrelevant for external memory, however, because it only has an 8-bit data bus.

Re: Inside the Super Nintendo cartridges

#173

Post by wolrah » Mon, Apr 22, 2024, 9:24 PM UTC

dmitrygr wrote: post #104

tetha wrote: post #45

Earlier quoted context omitted.

There is also this entirely crazy "NES reverse emulation"[1] Here someone replaces the cartridge with a modern computer and then... weird things start happening. Such as using a NES to present effectively a powerpoint presentation about humor. 1: https://www.youtube.com/watch?v=ar9WRwCiSr0

I did that with PalmOS - a card that you insert into the original Pilot (16MHz 68k) and it takes over, runs PalmOS5 on a 200MHz ARM chip, using the pilot as a display and touch panel. Also did it using memory stick IO protocol too (Ctrl+F for "MSIO") https://dmitry.gr/?r=05.Projects&proj=27.%20rePalm

As someone who got in to the PalmOS world just before OS 5 was shown off and then spent years waiting to upgrade for the OS 6 device that never came I've been fascinated by your project since I first came across it. Amazing work!

Amusingly the device that replaced my classic Palm was an Axim X3, which if I hadn't sold it to buy a server in 2005 would probably have already had your rePalm build installed on it.