Need instructions for Toshiba HX-MU900 sample ram and bios upgrade

Par dhau

Paragon (1570)

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27-04-2021, 05:57

Hi folks, like many of you, I recently purchased a cheap new old stock Toshiba HX-MU900 MSX audio cartridge with HX-MU901 piano keyboard. I now want to upgrade it with 256KB of sample ram and a new MSX audio bios. There is an old news update about it, but I can't find the information anywhere. Not on Hans Otten site and not on MSXPro.

Does anyone have the instruction please? Thank you in advance!

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Par mars2000you

Enlighted (6229)

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27-04-2021, 09:04

Check the links in the wiki: https://www.msx.org/wiki/Toshiba_HX-MU900

Par Repair-Bas

Paragon (1154)

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27-04-2021, 11:42