Programmed EPROM OS and Mask Roms
If you need anything at all not listed here, please contact. I can provide you any EPROM for most synths immediately. I can also customize some aspects of the software of many synths like changing the factory presets to your own sounds. Just contact.
!

D8048C-xxx Mask ROM

-D8048C-012 - Main CPU, used in Roland Jupiter 4, MRS-2 Promars
-D8048C-067 - Main CPU, used in Roland PG-200
-D8048C-077 - Main CPU, used in Roland CSQ-100, CSQ-600 (Can replace D8048C-028)
-D8048C-191 - Main CPU, used in Roland PG-800
-D8048C-345 - Main CPU, used in Korg Polysix and Trident

D8049C-xxx Mask ROM

-D8049C-217 - Keyboard processor, used in Korg MonoPoly, Polysix, and Poly-61 first series
-D8049C-337 - Main CPU, used in Korg Poly-61 later versions
-D8049C-380 - Panel board A, newer version of Roland Juno 60
-D8049C-384 - Keyboard processor, used in Korg Poly-61 later versions

Drumtraks OS 0.5

Including a copy of the document MIDIGUIDE

Ensoniq ESQ-1 OS 3.5

U17 and U18 OS EPROMs
I can provide the original OS or the patched OS that can use the extra "hidden waves".

Ensoniq VFX OS 2.30

Kawai

Kawai R-100 OS EPROMs

Kawai

Kawai R-100, R-50, R-50e sound roms

Kawai R100/R50/R50e 8 bank switch

This small module takes little more space than the original EPROM and can transform your Kawai drum machine in eight different machines.

Kawai R100
Kawai R50
Kawai R50e
Linndrum
Roland TR808
Roland TR909
EMU SP12
and a special sound bank designed by Portuguese film composer Pedro Janela

Korg 01/W OS #62 EPROM Kit

The kit contains two EPROMs, IC25 and IC26 with the last OS (#62) for the entire 01/W family. I will send a CR2032 lithium battery too.

Korg part numbers are 912162 and 912262.

Korg DW8000 OS V13

Korg Wavestation and Wavestation EX OS 3.19

Kurzweil

Kurzweil K2000 OS 3.87J (Janis) and 3.87C (Calvin)

Low profile ZIP socket

Novation Supernova II Keyboard OS 2.0 EPROM

Updating the OS via MIDI is an unnecessary complicated job. Just use a EPROM with the last OS and it will update automatically at first boot.

Oberheim Matrix 1000 OS 1.13, 1.16, 1.20

Yamaha FS1R OS1.20 EPROM

Yamaha TX-802 OS 1.5 EPROM

Cheetah MS6 OS V9