Yamaha Ym2149 sound chip created by MikeJ in VHDL, compatible with Xilinx and Altera.
MikeJ started by implementing the 555 chip in VHDL, used for sound effect (about five different sound) in original Space Invaders arcade game... and then realised this VHDL version of Yamaha Ym2149 sound chip compatible with Amstrad CPC. Not published, '''YM2149_linmix.vhd''' original version (coming from FPGAmstrad NEXYS4 v0 backup), just a very little patched to run in Amstrad [[FPGAmstrad]] (see "freemac" occurrence in code) :
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end architecture RTL;
This chip is used in [[FPGAmstrad]] project in order to implement Amstrad core in MiST-board (Altera final platform)
MikeJ is also author of :
* [http://www.fpgaarcade.com/platforms/ FPGAArcade] platform (Xilinx final platform running AGA Amiga)
* [[T80]] chip (VHDL) used also in [[FPGAmstrad ]] project [[Category:Hardware]]