Uploaded SC-55 emulator code to github:
github.com/nukeykt/Nuked-…

PCM chip emulation is complete now (chorus/reverb/filter)
#sc55

youtube.com/watch?v=u4Z5y2…

fixed envelopes, sounds much better now
#sc55

very rudimentary PCM chip emulation

coming along nicely

Roland SC-55 pcm chip tracing WIP

dumped SC-55mkII's secondary MCU (Mitsubishi m37409m2) firmware using voltage glitching. Injecting trojan to its ram and using glitch to corrupt PC counter to execute it did the trick

YM2608Bのリズム部の回路図を公開します。シリコンそのままの回路図です。自分のために作成したので、あまり親切ではありません。

言った通り、リズムサンプルROMのデータはICの脚を経由して吸出し可能です。そのタイミングをまだ分からないので、今から調査します。

github.com/ika-musume/IKA…

Sound Blaster over LPC bus experiments, this also includes OPL3 verilog code
github.com/nukeykt/LPC-So…

Hardware sound blaster emulation on 2014 mobo using TPM header, fpga devboard and minor soldering

fpga OPL3 over TPM header of motherboard. DOS games see it as real adlib sound card

soundcloud.app.goo.gl/KYHrt

OPL3 & OPL2

Sega Master System core (FPGA & soft) using decapped VDP, Z80 and IO chips
github.com/nukeykt/Nuked-…
github.com/nukeykt/Nuked-…

Released initial version of Nuked-MD-FPGA, cycle-accurate mega drive/genesis core based on reverse-engineering photos decapped MD chipset

github.com/nukeykt/Nuked-…

ironed out majority of bugs in my verilog mega drive emulation
github.com/nukeykt/Nuked-…

Verilog port of Nuked-MD is mostly functional now

mega drive ym7101 vdp verilog wip