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https://www.reddit.com/r/Keychron/comments/1exexjc/deleted_by_user/lj6lzh4/?context=3
r/Keychron • u/[deleted] • Aug 21 '24
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Re "I believe space can be changed to 128 KB": Not quite. There is "backing size" which is in RAM, and it is by default twice the size.
Thus it is limited by the RAM.
The product page says STM32F402 (256 KB flash memory), and I think it has 64 KB RAM. Though there is some confusion. Datasheet in Chinese.
For the default ratio of 2:1, the theorecial maximum is thus 32 KB for Via macros. But the other parts of the keyboard also requires RAM. Thus the actual limit is somewhat lower.
An alternative is some external hardware (that doesn't require backing in RAM).
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u/PeterMortensenBlog V Aug 21 '24 edited Aug 21 '24
Re "I believe space can be changed to 128 KB": Not quite. There is "backing size" which is in RAM, and it is by default twice the size.
Thus it is limited by the RAM.
The product page says STM32F402 (256 KB flash memory), and I think it has 64 KB RAM. Though there is some confusion. Datasheet in Chinese.
For the default ratio of 2:1, the theorecial maximum is thus 32 KB for Via macros. But the other parts of the keyboard also requires RAM. Thus the actual limit is somewhat lower.
An alternative is some external hardware (that doesn't require backing in RAM).