RAM tester for Moonsound/Wozblaster

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By Wolverine_nl

Paragon (1159)

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01-11-2018, 10:27

thanks for this Alexey Big smile

By storhemulen

Supporter (8)

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01-11-2018, 10:40

Alexey: The board with 2 SRAMs checks OK with the test utility. The other board with the crackling sound have no SRAM yet. I just tested it with Sonyc and there is sound, but with noise.

By Wierzbowsky

Guardian (3492)

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01-11-2018, 12:37

I am not an expert, but if you have no SRAM and the game/demo uses samples, then your sound should be somewhat distorted. Please do me a favor - run the test utility on a cartridge that doesn't have SRAM and share the screenshot, thanks. You should have all 'X' in the test...

By Wierzbowsky

Guardian (3492)

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01-11-2018, 17:22

Thanks. Detection seems to work fine. Smile

By storhemulen

Supporter (8)

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01-11-2018, 19:17

I just built a third board from my third and last YMF278 chip. No crackling sound with this board when running Sonyc, without any SRAM chips installed.

Conclusion: There must be something wrong with board #2, perhaps opamps or YMF278 or some bad soldering.

By hardwaremaker

Master (245)

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02-11-2018, 00:44

I have the Tecnobytes OPL4 ShockWave 2, with 2MB of ram, but the utility detects only 1MB.

By Pablibiris

Paragon (1812)

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02-11-2018, 20:41

hardwaremaker wrote:

I have the Tecnobytes OPL4 ShockWave 2, with 2MB of ram, but the utility detects only 1MB.

Here the same problem. The utility only shows 1MB instead 2MB in my OPL4 clone

By Wierzbowsky

Guardian (3492)

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02-11-2018, 22:13

According to the source code the program should be able to detect 2MB. I can share the source code in Z80 Assembler if someone wants to take a look. But be warned - the comments are in Russian. Wink

By Pencioner

Scribe (1508)

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03-11-2018, 00:08

It shows also 1Mb RAM with DalSoRI r2 which has 2Mb RAM, just checked

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