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36 lines
1.5 KiB
Markdown
36 lines
1.5 KiB
Markdown
## ZX-MultiSound
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Sound card for ZX Spectrum (NemoBus).
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[](images/revA.webp?raw=true)
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[](images/revA-side.webp?raw=true)
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### Tech specs
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* TurboSound FM (2xYM2203)
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* General Sound (16MHz, 1024Kb of RAM)
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* SAA1099 (use port #FF/#1FF to access SAA chip, write #F7/#FF to #FFFD port to enable/disable SAA)
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* SounDrive (ports #0F, #1F, #4F, #5F)
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* MIDI synthesizer (controlled via YM(AY) chip - compatible with ZX Spectrum 128K / ZXUNO)
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* Low profile PCB: 170x64mm
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* 5V and 12V power required
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* 4x 1-bit digital DACs for GS and SounDrive
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### Changelog & current status
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* Rev.A - first release. Please note the [errata](pcb/rev.A/ERRATA.txt);
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* Rev.A1 - fixed known rev.A issues. Please note the [errata](pcb/rev.A1/ERRATA.txt).
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* Rev.A2:
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* Fixed Z80 clocking - added buffer;
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* Fixed 3.5mm jack footprint swapped left-right channels;
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* Fixed misplaced R20 and R34 labels on silkscreen;
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* 74LVC1G125DB replaced by 74AHCT1G125DB;
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* C3,C5,C17,C18 slightly moved left;
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* Added ledge on edge connector;
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* Improved SAM2695 footprint for hand soldering.
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Sound card has been tested only with ZX Evolution. You can use it with another computer at your own risk.
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### Related projects
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* Turbo Sound FM - [link](http://www.nedopc.com/TURBOSOUND/ts-fm.php)
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* ZXM-SoundCard - [link](http://micklab.ru/My%20Soundcard/ZXMSoundCard.htm)
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* ZXM-GeneralSound - [link](http://micklab.ru/My%20Soundcard/ZXMGeneralSound.htm)
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* NeoGS - [link](http://www.nedopc.com/gs/ngs.php)
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