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ZX-MultiSound
Sound card for ZX Spectrum (NemoBus).
Tech specs
- TurboSound FM (2xYM2203)
- General Sound (16MHz, 1024Kb of RAM)
- SAA1099 (use port #FF/#1FF to access SAA chip, write #F7/#FF to #FFFD port to enable/disable SAA)
- SounDrive (ports #0F, #1F, #4F, #5F)
- MIDI synthesizer (controlled via YM(AY) chip - compatible with ZX Spectrum 128K / ZXUNO)
- Low profile PCB: 170x64mm
- 5V and 12V power required
- 4x 1-bit digital DACs for GS and SounDrive
Changelog & current status
- Rev.A - first release. Please note the errata;
- Rev.A1 - fixed known rev.A issues. Please note the errata.
- Rev.A2:
- Fixed Z80 clocking - added buffer;
- Fixed 3.5mm jack footprint swapped left-right channels;
- Fixed misplaced R20 and R34 labels on silkscreen;
- 74LVC1G125DB replaced by 74AHCT1G125DB;
- C3,C5,C17,C18 slightly moved left;
- Added ledge on edge connector;
- Improved SAM2695 footprint for hand soldering. Sound card has been tested only with ZX Evolution. You can use it with another computer at your own risk.
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