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run atari games in gba?


hal2k1

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The emulator is written in pure assembly language, the main emulator core is completely coded in Thumb and runs from ROM. The CPU emulation is a combination static recompiler & interpretive core -- for those pesky VCS games that run parts of their code out of RAM -- and is coded in ARM assembly running from the internal WRAM of the GBA.

 

Frame rate is a respectable 39fps, and a little more optimisation will get that to a nice 60fps. There is no sound emulation yet

 

800/XL/XE/5200 are much more complicated than 2600 and you can't reliably use

static recompiler since code is usually in RAM (unlike on 2600).

Coding full 800/XL/XE/5200 in Thumb asm is tedious and I doubt we can reach

100% real speed even at 10fps.

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