<html><head/><body><html><head>
<meta name="viewport" content="width=device-width" /><meta http-equiv="Content-Type" content="text/vnd.ui.secure+html;charset=utf-8" /></head><body bgcolor="#FFFFFF" text="#000000" style="overflow-wrap:break-word; word-break: break-word;"><div class="mail_android_message" style="line-height: 1; padding: 0.5em">No idea how to check the integrity of the flash, if its a cheap part...just change it, or maybe someone has another idea...<br>
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Diese Nachricht wurde von meinem Android Mobiltelefon mit GMX Mail gesendet.</div><div class="mail_android_quote" style="line-height: 1; padding: 0.3em">Am 23.02.2017, 16:42, Julian Schmidt <elfenjunge@gmx.net> schrieb:<blockquote class="gmail_quote" style="margin: 0.8ex 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
yeah but these are ROM not RAM.<br />
The datasheet says "These ROMs may be factory programmed with data or programs provided by the application developer."<br />
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No idea if waldorf went all the way to burn a custom loader into these ROMs at the chip factory.<br />
At least the normal firmware should be located on the flash, otherwise you could not update it.<br />
<br />
julian<br />
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Am 23.02.2017 um 16:39 schrieb Terry Shultz:<br />
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Hello All,
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The DSP56362 Motorola DSP does have P, X, and Y memory
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<span class="" style="font-size: 12.0pt;font-family: TimesNewRomanPSMT;">On-Chip Memories<br class="" />
— Modified Harvard architecture allows simultaneous access to program and data memories — 30720 x 24-bit on-chip program ROM</span><span class="" style="font-size: 10.0pt;font-family: TimesNewRomanPSMT;vertical-align: 5.0pt;">1</span><span class="" style="font-size: 12.0pt;font-family: TimesNewRomanPSMT;"> (disabled in 16-bit compatibility mode)<br class="" />
— 6144 x 24-bit on-chip X-data ROM</span><span class="" style="font-size: 10.0pt;font-family: TimesNewRomanPSMT;vertical-align: 5.0pt;">1<br class="" />
</span><span class="" style="font-size: 12.0pt;font-family: TimesNewRomanPSMT;">— 6144 x 24-bit on-chip Y-data ROM</span><span class="" style="font-size: 10.0pt;font-family: TimesNewRomanPSMT;vertical-align: 5.0pt;">1<br class="" />
</span><span class="" style="font-size: 12.0pt;font-family: TimesNewRomanPSMT;">— Program RAM, instruction cache, X data RAM, and Y data RAM sizes are programmable</span>
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<span class="" style="font-size: 9.0pt;font-weight: 700;">Instruction Cache</span>
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<span class="" style="font-size: 9.0pt;">Disabled Enabled Disabled Enabled</span>
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<span class="" style="font-size: 9.0pt;font-weight: 700;">Switch Mode</span>
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<span class="" style="font-size: 9.0pt;">Disabled Disabled Enabled Enabled</span>
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<span class="" style="font-size: 9.0pt;font-weight: 700;">Program RAM Size</span>
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<span class="" style="font-size: 9.0pt;">3072</span><span class="" style="font-size: 9.0pt;font-family: SymbolMT;"> ×</span><span class="" style="font-size: 9.0pt;"> 24-bit 2048</span><span class="" style="font-size: 9.0pt;font-family: SymbolMT;"> ×</span><span class="" style="font-size: 9.0pt;"> 24-bit 5120</span><span class="" style="font-size: 9.0pt;font-family: SymbolMT;"> ×</span><span class="" style="font-size: 9.0pt;"> 24-bit 4096</span><span class="" style="font-size: 9.0pt;font-family: SymbolMT;"> ×</span><span class="" style="font-size: 9.0pt;"> 24-bit</span>
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<span class="" style="font-size: 9.0pt;font-weight: 700;">Instruction Cache Size</span>
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<span class="" style="font-size: 9.0pt;">0<br class="" />
1024</span><span class="" style="font-size: 9.0pt;font-family: SymbolMT;"> ×</span><span class="" style="font-size: 9.0pt;"> 24-bit 0<br class="" />
1024</span><span class="" style="font-size: 9.0pt;font-family: SymbolMT;"> ×</span><span class="" style="font-size: 9.0pt;"> 24-bit</span>
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<span class="" style="font-size: 9.0pt;font-weight: 700;">X Data RAM Size</span>
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<span class="" style="font-size: 9.0pt;">5632</span><span class="" style="font-size: 9.0pt;font-family: SymbolMT;"> ×</span><span class="" style="font-size: 9.0pt;"> 24-bit 5632</span><span class="" style="font-size: 9.0pt;font-family: SymbolMT;"> ×</span><span class="" style="font-size: 9.0pt;"> 24-bit 5632</span><span class="" style="font-size: 9.0pt;font-family: SymbolMT;"> ×</span><span class="" style="font-size: 9.0pt;"> 24-bit 5632</span><span class="" style="font-size: 9.0pt;font-family: SymbolMT;"> ×</span><span class="" style="font-size: 9.0pt;"> 24-bit</span>
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<span class="" style="font-size: 9.0pt;font-weight: 700;">Y Data RAM Size</span>
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<span class="" style="font-size: 9.0pt;">5632</span><span class="" style="font-size: 9.0pt;font-family: SymbolMT;"> ×</span><span class="" style="font-size: 9.0pt;"> 24-bit 5632</span><span class="" style="font-size: 9.0pt;font-family: SymbolMT;"> ×</span><span class="" style="font-size: 9.0pt;"> 24-bit 3584</span><span class="" style="font-size: 9.0pt;font-family: SymbolMT;"> ×</span><span class="" style="font-size: 9.0pt;"> 24-bit 3584</span><span class="" style="font-size: 9.0pt;font-family: SymbolMT;"> ×</span><span class="" style="font-size: 9.0pt;"> 24-bit</span>
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<img alt="page4image15160" class="" id="9EE12412-1A94-4351-94CB-9E17DC715F7E" src="Attachment/Y2lkOnBhcnQxLjA1MDQ0OTZDLkU0OUNGNjMxQGdteC5uZXQ" /><img alt="page4image15320" class="" id="99CD177E-AFCB-4939-B45D-3CCB4B503B76" src="Attachment/Y2lkOnBhcnQyLjAxMzQ0ODM2LjE3NjI5RUU3QGdteC5uZXQ" />
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<span class="" style="font-size: 9.0pt;">1.</span>
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<span class="" style="font-size: 12.0pt;font-family: TimesNewRomanPSMT;">— 192 x 24-bit bootstrap ROM (disabled in sixteen-bit compatibility mode)</span>
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<span class="" style="font-size: 12.0pt;">Off-Chip Memory Expansion</span>
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<span class="" style="font-size: 12.0pt;">— Datamemoryexpansionto256Kx24-bitwordmemoryforP,X,andYmemoryusingSRAM.</span>
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<span class="" style="font-size: 12.0pt;">— Datamemoryexpansionto16Mx24-bitwordmemoryforP,X,andYmemoryusingDRAM.</span>
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<span class="" style="font-size: 12.0pt;">— Externalmemoryexpansionport(twenty-fourdatapinsforhighspeedexternalmemoryaccessallowing for a large number of external accesses per sample)</span>
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<span class="" style="font-size: 12.0pt;">— Chip select logic for glueless interface to SRAMs</span>
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<span class="" style="font-size: 12.0pt;">— On-chip DRAM controller for glueless interface to DRAMs</span>
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<span class="" style="font-size: 12.0pt;"><br class="" />
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<span class="" style="font-size: 12.0pt;">regards,</span>
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<span class="" style="font-size: 12.0pt;"><br class="" />
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<span class="" style="font-size: 12.0pt;">Terry </span>
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On Feb 23, 2017, at 7:17 AM, Julian Schmidt <<a class="" href="mailto:elfenjunge@gmx.net" target="_blank">elfenjunge@gmx.net</a>> wrote:
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I checked the 3.3V supply and it delivers stable 3.3V<br class="" />
Xtal is running at 14.3MHz and the Clock IC is forwarding the clock to the DSP<br class="" />
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I only worked with SHARC DSPs so far, but I guess the motorola DSP has no internal program memory and is bootet by the uC from flash and has its OS stored in the attached SRAM?<br class="" />
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The rest of the PCB, especially around the DSPs looks pretty good. All sketchy looking parts where located to the left of the uC and the DSP is on its right side. Caps look good, too.<br class="" />
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Here is a pic of the board.<br class="" />
<a class="moz-txt-link-freetext" href="http://chipmusik.de/dump/uQ.jpg" target="_blank">http://chipmusik.de/dump/uQ.jpg</a><br class="" />
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I'm a bit concerned that the firmware update does not seem to work, as I guess the DSP should not be involved with that.<br class="" />
Maybe an indication that it could be the flash indeed?<br class="" />
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Any idea how to check the flash?<br class="" />
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Julian<br class="" />
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Am 23.02.2017 um 15:56 schrieb Christian Tecl:<br class="" />
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Hello list - hello Julian....<br class="" />
I guess you already checked everything round that flip flop, resistors, diodes etc... To me there are also reasons to suggest a problem with power supply, maybe you check that also before soldering that dsp... And think about the possibility that it could be the flash, also. Like to hear what you are discovering. Greets Christian<br class="" />
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Diese Nachricht wurde von meinem Android Mobiltelefon mit GMX Mail gesendet.
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Am 23.02.2017, 15:24, Julian Schmidt<a class="moz-txt-link-rfc2396E" href="mailto:elfenjunge@gmx.net" target="_blank"> <elfenjunge@gmx.net></a> schrieb:
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I have a broken microQ in the workshop right now.<br class="" />
It arrived with a scrambled LCD that only showed garbage.<br class="" />
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after opening it up I saw someone butcher the D-Flipflop (bend and<br class="" />
shorted pins)<br class="" />
after replacing it the unit boots again, waldorf welcome screen, os2.2,<br class="" />
then preset name.<br class="" />
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yay!<br class="" />
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bad news is the unit immediately freezes. No buttons and encoders do<br class="" />
something. :(<br class="" />
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I tried the firmware update but on reveiving the sysex data the power<br class="" />
button makes a quick flash, 4 or 5 vertical bars appear in the LCD and<br class="" />
then nothing happens. Pingpong chaselight on the Inst. 1-4 LEDs and the<br class="" />
message "please play back dump" or something like that in the screen.<br class="" />
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In factory test mode all buttons, LEDs and encoders work.<br class="" />
Audio out test does not work (silence on all outs)<br class="" />
and the DSP test fails.<br class="" />
it only shows:<br class="" />
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1:----- 2:----- 3:sig!<br class="" />
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and repeatedly flashes "DSP REBOOT" every second.<br class="" />
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So my guess is that I have a broken DSP.<br class="" />
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Is it worth it to try and replace the DSP? they are still in stock at<br class="" />
digikey.<br class="" />
But I am open for other ideas since I'm not keen on desoldering the LQFP144.<br class="" />
<br class="" />
Best,<br class="" />
Julian<br class="" />
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