Readme GX 8 button 
The original 6 ROMS are included

These OS chip files will upgrade the GX to operate with the full MIDI specifications, adding the most frustrating deficiency the ability to PAN over MIDI.  This is the only modification that can be done to a Kurzweil GX1000 module.  

No 23 button GX modules were manufactured.  

Tested and it works. 

Chip type 27C512-2JL
Read with EPROM+ using 27C512 setting.

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GX8 Hi   V5.10
U22
OC37
YoungChang
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GX8 Lo   V5.10
U33
7B68
YoungChang
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Engine Hi 1000GX V.xx
U21                           hand written sticker
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Engine Lo 1000GX V.xx  
U32                           hand written sticker
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U51, 55, 59 are contemporary chips
U54, 58, 50 are the base GX chips
