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Commit | Line | Data |
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1 | ------------------------------------------------------------------------------- | |
2 | Signature from Hewlett-Packard Instrument | |
3 | ------------------------------------------------------------------------------- | |
4 | ||
5 | These captures contain the valid signature, confirmed with HP's service manual. | |
6 | ||
7 | Details: | |
8 | http://hpmemoryproject.org/an/pdf/an_222.pdf | |
9 | https://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1977-05.pdf | |
10 | ||
11 | ||
12 | Logic analyzer setup | |
13 | -------------------- | |
14 | ||
15 | The logic analyzer used was a Saleae Logic (at 6-24MHz): | |
16 | ||
17 | Probe Pin | |
18 | --------------- | |
19 | 0 START | |
20 | 1 STOP | |
21 | 5 DATA | |
22 | 7 CLOCK | |
23 | ||
24 | The sigrok command line used was: | |
25 | ||
26 | sigrok-cli -d fx2lafw -c samplerate=24MHz -o <filename> --time 1s | |
27 | ||
28 | Time, samplerate and <filename> parameters vary depending on the file. | |
29 | ||
30 | ||
31 | unstable1.sr | |
32 | ------------ | |
33 | ||
34 | This is not valid signature, but useful for regression tests. |