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== Tricks == | == Tricks == | ||
| + | === Memory Chip === | ||
* Multiple digits can be saved in the same memory cell; each cell can contain 2 or 3 digits. | * Multiple digits can be saved in the same memory cell; each cell can contain 2 or 3 digits. | ||
Set a digit with `dst`; get a digit with `dgt`. | Set a digit with `dst`; get a digit with `dgt`. | ||
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So you don't need to say `tgt acc 13; +sub 13` | So you don't need to say `tgt acc 13; +sub 13` | ||
| + | === Processor Chip === | ||
* If the range of *acc* is limited, then the extra range can be used to store a bit. | * If the range of *acc* is limited, then the extra range can be used to store a bit. | ||
Say if the value is 0 ~ 200, then we can `sub 400` from it to use -400 ~ -200 to represent the bit = 1, and the original range to represent bit = 0. | Say if the value is 0 ~ 200, then we can `sub 400` from it to use -400 ~ -200 to represent the bit = 1, and the original range to represent bit = 0. | ||
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| + | * An Xbus can be shared by multiple writer; however you should only have 1 reader. | ||
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| + | * Sometimes `jmp L` can be omitted by carefully placing +/- on the statements below. | ||
| + | If you have another test statement, though, this becomes harder. | ||
2023年6月19日 (一) 02:21的版本
Tricks
Memory Chip
- Multiple digits can be saved in the same memory cell; each cell can contain 2 or 3 digits.
Set a digit with `dst`; get a digit with `dgt`. To effectively extract the digits, ideally this should be done in a big chip, by putting the data into *dat* and repeatedly move it into *acc*.
- Memory chip is also a great accumulator
- Memory chip's address port can handle values which are bigger than the max address - it'll wrap around.
So you don't need to say `tgt acc 13; +sub 13`
Processor Chip
- If the range of *acc* is limited, then the extra range can be used to store a bit.
Say if the value is 0 ~ 200, then we can `sub 400` from it to use -400 ~ -200 to represent the bit = 1, and the original range to represent bit = 0.
- An Xbus can be shared by multiple writer; however you should only have 1 reader.
- Sometimes `jmp L` can be omitted by carefully placing +/- on the statements below.
If you have another test statement, though, this becomes harder.
