So you've made an adapter, inserted the SFG-05 the wrong way, blew the YM2148 and need to program an new EPROM? No? well I did once. Fortunately I was able to get the ROM from another CX5M, but you might not be that fortunate.

Until now: I've saved the SFG-05 ROM and some cartridges in case you have similar problems. All ROM images start at 4000h exept for the SFG-05 cartridge (which starts at 0000h) Please contact me if you have any additions.

SFG-05 ROM Image (32KB)*
YRM-101 FM Music Composer (16KB)
YRM-101 Manual (PDF, 1.2MB)
YRM-102 FM Voicing Program (16KB)
YRM-103 DX7 Voicing Program (16KB)
YRM-104 FM Music Macro (32KB) **
YRM-301 MIDI Recorder (32KB)
YRM-303 MIDI Macro & Monitor (32KB)
YRM-501 FM Music Composer II (32KB)
YRM-502 FM Voicing Program II (16KB)
YRM-506 FB-01 Voicing Program (32KB)

* To upgrade the SFG-01 cartridge to a SFG-05 you have to connect address line A14 from the EPROM (IC104, replace with type 27C256). Solder a wire between pin 27 of the new EPROM to pin 35 of the side slot connector.

** Henk Koekoek has sent me scanned articles from MSX Club Be/Nl Magazine which describes how to use the built-in speech synthesis on the Music Macro cartridge. Click here to read it.