Been following your videos and music. Really looking forward to your upcoming releases. Would be nice to see a live streaming performance of your works sometime.
hi Scott, really like your site and content and your videos and posts led to an obsession for early WERSI keyboards and helped me understand them better. keep up the good work. looking forward to hear more of your music. best regards from denmark, Mike
The Second is if it is easy for someone to design new ROM or RAM cartridge-boards for the MK-1 in order to burn your rom dumps and others if exist (I have found only yours) and use them.
You mostly just have to use the right size EPROM. A 27256 EPROM is 32Ki x 8. And use a CMOS version (27C256) if that’s what the original part is, and with the same access time or better (27256-15 is 150 ns, 27256-10 is 100 ns, etc.). According to the schematic, IC3 is 27256 and IC5 is 27128. But this doesn’t specify the speed or anything, so you should probably check the part numbers on the ICs to be on the safe side. Likely anything would work if it’s the right size, but being careful can save you some frustration if the specific characteristics are important.
It wouldn’t be that difficult to make a new cartridge if you have one to analyze. I think a new PCB layout could be made fairly quickly, and a larger ROM or RAM could be used for 16 or more banks (selected with DIP switches). But I don’t have the inclination to do it.
Hi, thank you for your valuable info. If we had all the rom dumps available, as you did, then someone could make a ram cartridge with 16 banks (with DIP switches selection) as you say, especially now which there is an available editor and we could share everything from the factory cartridges and our patches.
hey scott — I found your music trying to understand puredata. I have been trying to reverse engineer and understand your algorithmic acid pd patch your released but Im too dumb 😦 could I email you with questions?
Hello acreil ! =)
I saw you made a dump from Yamaha RX5 WRC04 cartridge, can I ask you for one-shots samples from this extension, if it doesn’t bother you, of course
(I tried extract sounds from dumps with RX5 usb tool software, but it seems to correct samples playback original drummachine is nedeed)
I haven’t recorded the samples from mine. You should be able to use RX7 samples. I’m not sure if it has all the same sounds, but it should at least cover most of them.
Question for you – stumbled onto your blog here. I am a drummer and audio engineer and have some yamaha ptx8 units. I was wondering if you think the RX5USB from Pharmasonic would work with my PTX8 units? They were able to use the same cartridges and PCM sounds as the RX5’s — i believe built with the same engine/specs just tailored to being triggered from pads or midi. I left a note for Pharmasonics on Gearslutz but i don’t know if they engage in email too much (cant find a good contact email /method of asking them). What’s your expert opinion (you seem to know a lot about synths and specifically these to my amazement) – thanks – Dan
I expect it’s the same hardware as the RX5, but I don’t know for sure, and I don’t think anyone’s tested it. If you could open up the PTX8 and confirm that it contains the YM3907 and YM3908 ICs, then very likely it would work. But I expect it would still work anyway if it uses different hardware.
I have a CTS-2000. Is there any way you could send me your details on the filter modification you did? I corresponded with you about 10 years ago talking about buying your synths. Anyway. I’m at rfrayo@gmail.com
I added it to descriptions of my relevant youtube uploads:
The CTS-2000 has a very steep lowpass filter (about 7.3 kHz) on both output channels. This is located on the front panel PCB, near where the pitch and mod wheels connect. Removing 5 capacitors per channel (5.6 nF, 10 nF, 820 pF, 15 nF, 330 pF) and retuning the VCF trimpots for a higher cutoff frequency improves the sound considerably.
Hey if I send you a Yamaha PLG100-XG board could you dump the waverom to make it work in the Yamaha YXG-50 Vst DLL file? There a current project on here https://veg.by/en/projects/syxg50/ about it. It seems you can attach other waveroms to work in it. It appears the waverom they used for the vst was dumped from the Yamaha MU50.
I don’t have a hot air rework station, so it might be difficult to remove the ROM chip without damaging the board. Also, I don’t know if the software would work with just the .bin ROM dump file and nothing else. You might have to ask the author to make sure that’s sufficient.
Came across you on Gearspace. You have a new fan, I’m loving Panchromatic Window. You should develop more work in this rich harmonic style, it’s really good! I really like how you spotlight the gear. Thanks for the tunes!
acreil 
Hey I like your track for beautiful human life. Takes me back to the good old days of gaming.
Been following your videos and music. Really looking forward to your upcoming releases. Would be nice to see a live streaming performance of your works sometime.
I really like your music. Quite different from the stuff I normally hear, and I usually hear some pretty underground stuff. Keep it up!
hi Scott, really like your site and content and your videos and posts led to an obsession for early WERSI keyboards and helped me understand them better. keep up the good work. looking forward to hear more of your music. best regards from denmark, Mike
Scott, What are you up to? What’s going on?
Working on new stuff in a very disorganized manner.
Looking forward to your new stuff.
Hi Acreil.
Congratulations for your many articles in various synths, I mostly liked the Kawai K3 and your Wersi works..
I have two questions for you as I am a newbie Wersi MK-1 owner just in case you can answer.
The first is what type of Eproms can I use to burn the latest firmware from here (https://github.com/ijsf/wersi-mk1-ex20-re/tree/master/firmwares/MK1_EX20) – IC3 & IC5.
The Second is if it is easy for someone to design new ROM or RAM cartridge-boards for the MK-1 in order to burn your rom dumps and others if exist (I have found only yours) and use them.
Thank you very much
You mostly just have to use the right size EPROM. A 27256 EPROM is 32Ki x 8. And use a CMOS version (27C256) if that’s what the original part is, and with the same access time or better (27256-15 is 150 ns, 27256-10 is 100 ns, etc.). According to the schematic, IC3 is 27256 and IC5 is 27128. But this doesn’t specify the speed or anything, so you should probably check the part numbers on the ICs to be on the safe side. Likely anything would work if it’s the right size, but being careful can save you some frustration if the specific characteristics are important.
It wouldn’t be that difficult to make a new cartridge if you have one to analyze. I think a new PCB layout could be made fairly quickly, and a larger ROM or RAM could be used for 16 or more banks (selected with DIP switches). But I don’t have the inclination to do it.
Hi, thank you for your valuable info. If we had all the rom dumps available, as you did, then someone could make a ram cartridge with 16 banks (with DIP switches selection) as you say, especially now which there is an available editor and we could share everything from the factory cartridges and our patches.
hey scott — I found your music trying to understand puredata. I have been trying to reverse engineer and understand your algorithmic acid pd patch your released but Im too dumb 😦 could I email you with questions?
You can email me about it if you want (there’s a contact form on my bandcamp page), but I probably don’t remember much about it at this point.
Hello acreil ! =)
I saw you made a dump from Yamaha RX5 WRC04 cartridge, can I ask you for one-shots samples from this extension, if it doesn’t bother you, of course
(I tried extract sounds from dumps with RX5 usb tool software, but it seems to correct samples playback original drummachine is nedeed)
I haven’t recorded the samples from mine. You should be able to use RX7 samples. I’m not sure if it has all the same sounds, but it should at least cover most of them.
thank you for the advice, there are really a lot of similar samples in RX7 ! =)
Question for you – stumbled onto your blog here. I am a drummer and audio engineer and have some yamaha ptx8 units. I was wondering if you think the RX5USB from Pharmasonic would work with my PTX8 units? They were able to use the same cartridges and PCM sounds as the RX5’s — i believe built with the same engine/specs just tailored to being triggered from pads or midi. I left a note for Pharmasonics on Gearslutz but i don’t know if they engage in email too much (cant find a good contact email /method of asking them). What’s your expert opinion (you seem to know a lot about synths and specifically these to my amazement) – thanks – Dan
I expect it’s the same hardware as the RX5, but I don’t know for sure, and I don’t think anyone’s tested it. If you could open up the PTX8 and confirm that it contains the YM3907 and YM3908 ICs, then very likely it would work. But I expect it would still work anyway if it uses different hardware.
I have a CTS-2000. Is there any way you could send me your details on the filter modification you did? I corresponded with you about 10 years ago talking about buying your synths. Anyway. I’m at rfrayo@gmail.com
I added it to descriptions of my relevant youtube uploads:
The CTS-2000 has a very steep lowpass filter (about 7.3 kHz) on both output channels. This is located on the front panel PCB, near where the pitch and mod wheels connect. Removing 5 capacitors per channel (5.6 nF, 10 nF, 820 pF, 15 nF, 330 pF) and retuning the VCF trimpots for a higher cutoff frequency improves the sound considerably.
Hey if I send you a Yamaha PLG100-XG board could you dump the waverom to make it work in the Yamaha YXG-50 Vst DLL file? There a current project on here https://veg.by/en/projects/syxg50/ about it. It seems you can attach other waveroms to work in it. It appears the waverom they used for the vst was dumped from the Yamaha MU50.
I don’t have a hot air rework station, so it might be difficult to remove the ROM chip without damaging the board. Also, I don’t know if the software would work with just the .bin ROM dump file and nothing else. You might have to ask the author to make sure that’s sufficient.
yo hit me up nitrouso
soundcloud.com/nitrouso
molecular NMR data -> music
mathematics -> music
irrational relationships and shite.
Came across you on Gearspace. You have a new fan, I’m loving Panchromatic Window. You should develop more work in this rich harmonic style, it’s really good! I really like how you spotlight the gear. Thanks for the tunes!
I have a lot more stuff composed, but it takes too damn long to record this way.
it’s been a while 🙂 looking forward to anything new!