FreeCalypso > hg > freecalypso-tools
annotate doc/DSP-ROM-dump @ 995:74024eb17e04
fc-loadtool help: improve language regarding 16 MiB flash chips
In FC project history, 16 MiB flash originally meant Pirelli DP-L10.
Then we got FCDEV3B with the same flash (our own design), but now we are
discovering more Calypso devices that used such large flash, both late
Calypso era (Sony Ericsson K2x0) as well as much earlier ones (FIC FLUID
devices.txt file with 2004 dates, Leonardo+ rev 5). Hence we need to
migrate to more generic or neutral language in associated documentation,
without giving elevated status to specific examples that drove our
early project history.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 03 Dec 2023 21:11:12 +0000 |
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1 A pair of little ad hoc programs has been been added to FreeCalypso host tools |
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2 for the purpose of dumping the Calypso chip's internal DSP mask ROM. These two |
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3 programs are the dspdump target utility (see Target-utils) and the fc-dspromdump |
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4 front end host tool built in the loadtools suite. This addition is being |
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5 documented here for the sake of completeness, but it is not expected that anyone |
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6 will ever need to use these DSP ROM dump tools. Instead our fc-dspromdump tool |
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7 was written so it could be run exactly 3 times: |
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8 |
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9 * Our new tool was run once against a common DSP 3606 target to verify that it |
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10 produces exactly the same output as the old tool implemented a decade ago by |
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11 our political rivals over at OsmocomBB, the dsp-rom-3606-dump.txt output that |
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12 has been published on our FTP site since 2017. The test result is yes, our |
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13 new tool produces exactly the same dump output when run against the same DSP |
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14 ROM version. |
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15 |
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16 * Our fc-dspromdump tool was then run two more times against less common DSP ROM |
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17 versions: it was run on a D-Sample C05 board and an FCDEV3B-751774 board, |
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18 producing our newly published dumps of Calypso DSP ROM versions 3311 and 3416, |
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19 respectively. |
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20 |
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21 We have now collected and published all 3 DSP ROM versions that are known to |
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22 have been featured in the evolutionary history of our beloved Calypso chip: |
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23 3311, 3416 and 3606. Because our target-utils and loadtools frameworks are |
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24 quite specific to Calypso and there are no other Calypso DSP ROM versions |
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25 besides the 3 which we've already collected and published, it is unlikely that |
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26 anyone else will need to run our DSP ROM dump tools as they stand. But if |
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27 anyone is interested in exploring some other TI DBB chips that came before or |
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28 after Calypso and is prepared to do the necessary work, our DSP ROM dump tools |
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29 might have some use as a starting point. |