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RISCBoy is an open-source portable games console, designed from scratch

github.com

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Re: RISCBoy is an open-source portable games console, designed from scratch

#21

Post by ZiiS »

iFire wrote: post #2

Does RISCBoy run Godot Engine? How can I make RISCBoy run Godot Engine?

This is a much smaller device then anyone has ever exported Godot to.

More practical would be to port https://github.com/gbdk-2020/gbdk-2020 so that https://github.com/chrismaltby/gb-studio could support it.

Re: RISCBoy is an open-source portable games console, designed from scratch

#25

Post by makapuf »

iFire wrote: post #2

Does RISCBoy run Godot Engine? How can I make RISCBoy run Godot Engine?

Its not a computer, its a small device. You dont have many unknown peripheral you dont have other programs. The memory and peripherals are there, just use them. Heap is complicated ? Preallocate everything. A peripheral is not used ? Just leave it there. Security ? Of what ? Thats the appeal of those devices.

Re: RISCBoy is an open-source portable games console, designed from scratch

#27

Post by matheusmoreira »

wren6991 wrote: post #24
iFire wrote: post #2

Does RISCBoy run Godot Engine? How can I make RISCBoy run Godot Engine?

Why do you want an engine? Just write games

Your comment got downvoted but I think there's deep truth in it. I've been decompiling GBA games from my childhood and it's remarkable how engineless they seem to be.

Re: RISCBoy is an open-source portable games console, designed from scratch

#28

Post by Dwedit »

The GBA was designed around having no cache. With a few exceptions (such as Internal RAM, Video RAM, IO registers, BIOS, OAM, Palettes), everything goes out to an external bus. Going out to an external bus with no cache will basically slow you down to 80s computer speeds. Fetching instructions from the cartridge ends up being around twice as fast as a GBC.

The way around that is using a cache, and sequentially fetching multiple words. Sequential fetches can be made faster, increasing throughput, and that can hide the latency if enough instructions/data gets cached.

I wonder how this system is designed, is it going to the memory bus for all fetches, or does it use a cache?

Re: RISCBoy is an open-source portable games console, designed from scratch

#29

Post by dmitrygr »

The author of this is one of the greatest minds of our time. While doing this is cool, he also designed the Hazard3 core in the RP2350 as well as the QSPI unit in it -- the only memory-mapped QSPI unit I've encountered so far that I've not been able to crash or hang.

Re: RISCBoy is an open-source portable games console, designed from scratch

#30

Post by christophilus »

jstanley wrote: post #19
tough wrote: post #10

Earlier quoted context omitted.

on the other hand having emoji on the readme is a great signal of llm-slop on my radar

Isn't that the same hand?

On the other hand, it does appear to be the same hand.
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