/Nuked-SC55

Roland SC-55 series emulation

Primary LanguageC++OtherNOASSERTION

Nuked SC-55

Roland SC-55 emulator, by nukeykt.

Supported models:

  • SC-55mk2/SC-155mk2 (v1.01 firmware is confirmed to work)
  • SC-55mk1 (v1.0/v1.21/v2.0 firmwares are confirmed to work)
  • CM-300/SCC-1 (v1.10/v1.20 firmwares are confirmed to work)
  • SCC-1A
  • SC-55st (v1.01)
  • JV-880 (v1.0.0/v1.0.1)
  • SCB-55/RLP-3194
  • RLP-3237
  • SC-155

Special thanks:

  • John McMaster: SC-55 PCM chip decap.
  • org/ogamespec: deroute tool.
  • SDL team.
  • Wohlstand: linux/macos port.
  • mattw.
  • HardWareMan.
  • giulioz: JV-880 support
  • Cloudschatze.
  • NikitaLita.
  • Karmeck.

License

Nuked SC-55 can be distributed and used under the original MAME license (see LICENSE file). Non-commercial license was chosen to prevent making and selling SC-55 emulation boxes using (or around) this code, as well as preventing from using it in the commercial music production.

Status

3 ICs are needed to be emulated:

  • Roland PCM chip
  • Hitachi H8/532 MCU
  • Mitsubishi M37450M2 MCU

MCUs are emulated using info from their datasheets. PCM chip info is derived from analyzing decapped chip.

PCM chip tracing progress

pcm_tracing.jpg

MCU emulation progress

mcu1.png

mcu2.png

Install

Put firmware image into the same folder as Nuked SC-55. Files should be names as such:

SC-55mk2/SC-155mk2 (v1.01):
R15199858 (H8/532 mcu) -> rom1.bin
R00233567 (H8/532 extra code) -> rom2.bin
R15199880 (M37450M2 mcu) -> rom_sm.bin
R15209359 (WAVE 16M) -> waverom1.bin
R15279813 (WAVE 8M) -> waverom2.bin

SC-55st (v1.01):
R15199858 (H8/532 mcu) -> rom1.bin
R00561413 (H8/532 extra code) -> rom2_st.bin
R15199880 (M37450M2 mcu) -> rom_sm.bin
R15209359 (WAVE 16M) -> waverom1.bin
R15279813 (WAVE 8M) -> waverom2.bin

SC-55 (v1.00):
R15199748 (H8/532 mcu) -> sc55_rom1.bin
R1544925800 (H8/532 extra code) -> sc55_rom2.bin
R15209276 (WAVE A) -> sc55_waverom1.bin
R15209277 (WAVE B) -> sc55_waverom2.bin
R15209281 (WAVE C) -> sc55_waverom3.bin

SC-55 (v1.21):
R15199778 (H8/532 mcu) -> sc55_rom1.bin
R15209363 (H8/532 extra code) -> sc55_rom2.bin
R15209276 (WAVE A) -> sc55_waverom1.bin
R15209277 (WAVE B) -> sc55_waverom2.bin
R15209281 (WAVE C) -> sc55_waverom3.bin

SC-55 (v2.0):
R15199799 (H8/532 mcu) -> sc55_rom1.bin
R15209387 (H8/532 extra code) -> sc55_rom2.bin
R15209276 (WAVE A) -> sc55_waverom1.bin
R15209277 (WAVE B) -> sc55_waverom2.bin
R15209281 (WAVE C) -> sc55_waverom3.bin

CM-300/SCC-1 (v1.10):
R15199774 (H8/532 mcu) -> cm300_rom1.bin
R15279809 (H8/532 extra code) -> cm300_rom2.bin
R15279806 (WAVE A) -> cm300_waverom1.bin
R15279807 (WAVE B) -> cm300_waverom2.bin
R15279808 (WAVE C) -> cm300_waverom3.bin

CM-300/SCC-1 (v1.20):
R15199774 (H8/532 mcu) -> cm300_rom1.bin
R15279812 (H8/532 extra code) -> cm300_rom2.bin
R15279806 (WAVE A) -> cm300_waverom1.bin
R15279807 (WAVE B) -> cm300_waverom2.bin
R15279808 (WAVE C) -> cm300_waverom3.bin

SCC-1A:
R00128523 (H8/532 mcu) -> cm300_rom1.bin
R00128567 (H8/532 extra code) -> cm300_rom2.bin
R15279806 (WAVE A) -> cm300_waverom1.bin
R15279807 (WAVE B) -> cm300_waverom2.bin
R15279808 (WAVE C) -> cm300_waverom3.bin

JV-880 (v1.0.0):
R15199810 (H8/532 mcu) -> jv880_rom1.bin
R15209386 (H8/532 extra code) -> jv880_rom2.bin
R15209312 (WAVE A) -> jv880_waverom1.bin
R15209313 (WAVE B) -> jv880_waverom2.bin
PCM Cards -> jv880_waverom_pcmcard.bin (optional)
Expansion PCBs -> jv880_waverom_expansion.bin (optional)

SCB-55/RLP-3194:
R15199827 (H8/532 mcu) -> scb55_rom1.bin
R15279828 (H8/532 extra code) -> scb55_rom2.bin
R15209359 (WAVE 16M) -> scb55_waverom1.bin
R15279813 (WAVE 8M) -> scb55_waverom2.bin

RLP-3237:
R15199827 (H8/532 mcu) -> rlp3237_rom1.bin
R15209486 (H8/532 extra code) -> rlp3237_rom2.bin
R15279824 (WAVE 16M) -> rlp3237_waverom1.bin

SC-155 (rev 1):
R15199799 (H8/532 mcu) -> sc155_rom1.bin
R15209361 (H8/532 extra code) -> sc155_rom2.bin
R15209276 (WAVE A) -> sc155_waverom1.bin
R15209277 (WAVE B) -> sc155_waverom2.bin
R15209281 (WAVE C) -> sc155_waverom3.bin

SC-155 (rev 2):
R15199799 (H8/532 mcu) -> sc155_rom1.bin
R15209400 (H8/532 extra code) -> sc155_rom2.bin
R15209276 (WAVE A) -> sc155_waverom1.bin
R15209277 (WAVE B) -> sc155_waverom2.bin
R15209281 (WAVE C) -> sc155_waverom3.bin

Additional info

  • Nuked SC-55 will listen to the specified MIDI IN port (default is port 0). Use -p:<port_number> command line argument to specify port number. To use it with the other applications use external MIDI pipe software (e.g. loopMIDI).

  • SC-55mk2/SC-55mk1 buttons are mapped as such (currently hardcoded):

Q -> POWER
W -> INST ALL
E -> INST MUTE
R -> PART L
T -> PART R
Y -> INST L
U -> INST R
I -> KEY SHIFT L
O -> KEY SHIFT R
P -> LEVEL L
LEFTBRACKET  -> LEVEL R
A -> MIDI CH L
S -> MIDI CH R
D -> PAN L
F -> PAN R
G -> REVERB L
H -> REVERB R
J -> CHORUS L
K -> CHORUS R
LEFT -> PART L
RIGHT -> PART R
  • JV-880 buttons are mapped as such (currently hardcoded):
P -> PREVIEW
LEFT -> CURSOR L
RIGHT -> CURSOR R
TAB -> DATA
Q -> TONE_SELECT
A -> PATCH_PERFORM
W -> EDIT
E -> SYSTEM
R -> RHYTHM
T -> UTILITY
S -> MUTE
D -> MONITOR
F -> COMPARE
G -> ENTER
COMMA -> ENCODER L
PERIOD -> ENCODER R

  • -mk2, -st, -mk1, -cm300, -jv880, -scb55, -rlp3237, -sc155 and -sc155mk2 command line arguments can be used to specify rom set. If no model is specified emulator will try to autodetect rom set (based on file names).

  • Due to a bug in the SC-55mk2's firmware, some parameters don't reset properly on startup. Do GM, GS or MT-32 reset using buttons to fix this issue.

  • SC-155 doesn't reset properly on startup (firmware bug?), use Init All option to workaround this issue.

  • SC-155's additional buttons/sliders are not emulated at the moment. They will be emulated in the future after proper GUI is implemented.