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annotate doc/DSP-ROM-dump @ 1012:11391cb6bdc0

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patch from fixeria: doc change from SE K2x0 to K2xx Since their discovery in late 2022, Sony Ericsson K200 and K220 phones were collectively referred to as SE K2x0 in FreeCalypso documentation. However, now that SE K205 has been discovered as yet another member of the same family (same PCBA in different case), it makes more sense to refer to the whole family as SE K2xx.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 23 Sep 2024 12:23:20 +0000
parents 9354a4f83fe8
children
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9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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1 A pair of little ad hoc programs has been been added to FreeCalypso host tools
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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2 for the purpose of dumping the Calypso chip's internal DSP mask ROM. These two
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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3 programs are the dspdump target utility (see Target-utils) and the fc-dspromdump
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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4 front end host tool built in the loadtools suite. This addition is being
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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5 documented here for the sake of completeness, but it is not expected that anyone
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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6 will ever need to use these DSP ROM dump tools. Instead our fc-dspromdump tool
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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7 was written so it could be run exactly 3 times:
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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8
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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9 * Our new tool was run once against a common DSP 3606 target to verify that it
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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10 produces exactly the same output as the old tool implemented a decade ago by
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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11 our political rivals over at OsmocomBB, the dsp-rom-3606-dump.txt output that
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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12 has been published on our FTP site since 2017. The test result is yes, our
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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13 new tool produces exactly the same dump output when run against the same DSP
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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14 ROM version.
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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15
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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16 * Our fc-dspromdump tool was then run two more times against less common DSP ROM
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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17 versions: it was run on a D-Sample C05 board and an FCDEV3B-751774 board,
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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18 producing our newly published dumps of Calypso DSP ROM versions 3311 and 3416,
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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19 respectively.
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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20
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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21 We have now collected and published all 3 DSP ROM versions that are known to
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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22 have been featured in the evolutionary history of our beloved Calypso chip:
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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23 3311, 3416 and 3606. Because our target-utils and loadtools frameworks are
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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24 quite specific to Calypso and there are no other Calypso DSP ROM versions
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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25 besides the 3 which we've already collected and published, it is unlikely that
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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26 anyone else will need to run our DSP ROM dump tools as they stand. But if
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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27 anyone is interested in exploring some other TI DBB chips that came before or
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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28 after Calypso and is prepared to do the necessary work, our DSP ROM dump tools
9354a4f83fe8 doc/DSP-ROM-dump article written
Mychaela Falconia <falcon@freecalypso.org>
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29 might have some use as a starting point.