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New all in one 6502 computer (Neo6502kbd)

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Re: New all in one 6502 computer (Neo6502kbd)

#5
> Neo6502 [...] consist of real W65C02S processor and RP2040 which emulates RAM memory, video, keyboard, SPI, I2C, UART, GPIOs, Sound

(via https://github.com/OLIMEX/Neo6502)

6502 is fun but coupling it to a RP2040 takes most of that fun away again, imho. Why not have the RP2040 emulate the 6502 too?

Re: New all in one 6502 computer (Neo6502kbd)

#6
post #3

Interesting, I wonder if those external 3.5" diskette drives will work with this ?

If they're USB, they should! At least the Apple/Oric software supports USB flash storage, and the USB floppies are the same protocol.

The problem is Apple II 3.5" disks are in GCR so you would need a custom controller (IMO certainly doable with an RP2040 let alone RP2350) that is not bound to just PC formats.

Re: New all in one 6502 computer (Neo6502kbd)

#8

According to https://neo6502.com/ the SOC has a 6.25 Mhz CPU and 64k of RAM. What's the utility of this in the modern world?

> Do you remember Karateka, Lode Runner, and Cross Fire on the Apple ][?

> Our Neo6502kbd brings it all back — an all-in-one retro computer with a real 6502 processor that can emulate the Apple ][ and Oric Atmos, letting you play all those classic games on your modern DVI/HDMI screen or TV.

It's for retrogaming apparently

Re: New all in one 6502 computer (Neo6502kbd)

#9
post #5

> Neo6502 [...] consist of real W65C02S processor and RP2040 which emulates RAM memory, video, keyboard, SPI, I2C, UART, GPIOs, Sound (via https://github.com/OLIMEX/Neo6502 ) 6502 is fun but coupling it to a RP2040 takes most of that fun away again, imho. Why not have the RP2040 emulate the 6502 too?

I think it works if you treat it as a black box - the RP2040 and 2350 are synchronous and can basically play the role of an FPGA here.

Although I could see a version of this with two RP2350's.

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