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Undocumented instruction! From: Carl Tesky <carl@longteng-co-ltd.gd.cn> |
| So, I was chatting with a mate at the pub and it comes to light those Chengshang Micro microcontrollers we use everywhere have a secret instruction that isn’t in any of the documentation.
Takes the format of: gen P R/I R/I ...and it conveniently generates a pulse on any simple I/O pin! The signal switches on (100) then off (0) for however many time units you want using the last two operands. gen P X Y is equivalent to: mov 100 P slp X mov 0 P slp Y Bloody hell. I could have been using this all along and saved so many instructions! J, did you know about this? | |
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Re: Undocumented instruction! From: 张杰 <zhangjie@longteng-co-ltd.gd.cn> |
| Yes. Actually, it is in the documentation… the Chinese version. Just like the @ conditional.
Jie. | |
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Re: Undocumented instruction! From: Carl Tesky <carl@longteng-co-ltd.gd.cn> |
| THE WHAT> | |
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Re: Undocumented instruction! From: 张杰 <zhangjie@longteng-co-ltd.gd.cn> |
| Seems like many instructions are not translated yet.
Putting an @ symbol at the beginning of an instruction causes it to execute only once. How have you been initializing code? Jie. | |
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Re: Undocumented instruction! From: Carl Tesky <carl@longteng-co-ltd.gd.cn> |
| Yeah okay I see how it is. | |