RAM tester for Moonsound/Wozblaster

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Van Meits

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06-11-2015, 19:33

I fould three of which Manuel is one. Two of them haven't got it around/want to bother, so let's look at Manuel Smile

Van Manuel

Ascended (17870)

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06-11-2015, 23:01

Remind me later...

Van Alexey

Guardian (3092)

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27-12-2015, 01:04

Manuel wrote:

Remind me later...

Reminding... Smile

Van Manuel

Ascended (17870)

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27-12-2015, 22:14

EDIT: please ignore the text below. I was trying to run it at R800 speed, and that doesn't work well...
At Z80 speed it detects 1024kB RAM and all tests pass like in openMSX.

ORIGINAL POST:

Well OK... it's odd
It either says:
RAM size: None
or
RAM size: 512kB, but all segments fail
or
RAM size: 1024kB, but all segments fail.

I tried with Bombaman and the Moonsound is still working quite OK... MBWave also still detects 640kB.

So I don't know what it is, but something is different between real and emulated MoonSound regarding SampleRAM detection.

Can you explain (or paste the code) how the sample RAM is detected in your test program?

Van Alexey

Guardian (3092)

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01-01-2016, 21:19

Thanks for testing, Manuel. The program does not detect 640kb of RAM, it only can detect 512 or 1024kb. As I don't have the original Moonsound, I can't adjust the program easily. But as long as it works fine on Moonblaster, let it be. If someone finds a Moonblaster with broken RAM, please post the image of the test screen.

Van Pencioner

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24-02-2016, 20:38

Thank you very much! It helped me to investigate bad-soldered pins on one of the RAM chip of the freshly-brewed Wozblaster Smile

Van storhemulen

Supporter (8)

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31-10-2018, 16:01

Will a Wozblaster work without any SRAM? I just built two, one works perfectly (2 SRAMS) but the other has distorted sound (no SRAM). I would think that the absence of RAMs have no impact on the sound, or would it?

Van Meits

Scribe (6372)

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31-10-2018, 18:12

Logically it would not matter if there's no sram for external samples. As long as they're not used by the track you play. If samples are used but they're absent, the track will miss quite something.

Van storhemulen

Supporter (8)

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31-10-2018, 18:55

Thanks for the reply Meits. I will have to check my soldering a little closer then. Smile

Van Alexey

Guardian (3092)

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01-11-2018, 00:55

Does the test utility show any problems with the on-board SRAM? Usually a partially broken or improperly soldered SRAM chip(s) results in distorted sample sounds (crackling, etc.) so please use the utility to test it.

http://podrezov.com/moontest/moontest.zip

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