Search found 35 matches

by gkmaia
Tue Feb 25, 2020 8:33 pm
Forum: Samplers
Topic: Ensoniq EPS system disk needed.
Replies: 8
Views: 836

Re: Ensoniq EPS system disk needed.

I agree with Raputin. His approach makes more sense.
by gkmaia
Fri Feb 21, 2020 7:39 pm
Forum: Samplers
Topic: Ensoniq EPS system disk needed.
Replies: 8
Views: 836

Re: Ensoniq EPS system disk needed.

I would not blame the PSU. Basically because if the voltage changes to a point where it affects the RAM threshold it would affect all other TTL devices, such as CPU and CPU rom, you would experience a system crash. one good thing you could do is to recap the PSU. That is always a good thing. Just a ...
by gkmaia
Wed Feb 19, 2020 9:32 pm
Forum: Samplers
Topic: Ensoniq EPS system disk needed.
Replies: 8
Views: 836

Re: Ensoniq EPS system disk needed.

Hey, based in the EU and currently rehabilitating an EPS from an estate sale that lay in storage for some time here. I've got an extra disk, but due to location might that not be so convenient. There is an eBay seller based in the UK whose disks work for me, if that's of any help. Also curious to a...
by gkmaia
Tue Feb 04, 2020 9:24 am
Forum: Samplers
Topic: Ensoniq EPS system disk needed.
Replies: 8
Views: 836

Ensoniq EPS system disk needed.

I just finally managed to fix my EPS after months onto it. Ended up replacing some faulty RAM ICs and a faulty disk drive. I managed to get it going with a Gotek-HxC but still curious to see if there is a way to save the original drive. To do that I will need a 100% proven working OS disk. Any good ...
by gkmaia
Tue Feb 04, 2020 9:17 am
Forum: Samplers
Topic: What software is used to write the EPS249OS.hfe image to a floppy?
Replies: 13
Views: 1263

Re: What software is used to write the EPS249OS.hfe image to a floppy?

It was the drive that was faulty. I got a gotek and installed a HxC and it now works fine.

It is sad the old drive does not work anymore.
by gkmaia
Tue Feb 04, 2020 6:45 am
Forum: Samplers
Topic: Ensoniq EPS .HFE file needed
Replies: 0
Views: 359

Ensoniq EPS .HFE file needed

I just fixed my old EPS and added a HxC floppy emulator and need an .HFE image file with a sample in it to test loading a sample and playing it. Could be any sound, it is just for testing and make sure it can load a sample and play it. I tried to use the ones provided by HxC (QuickInstall_FloppyDisk...
by gkmaia
Wed Jan 08, 2020 7:56 pm
Forum: Samplers
Topic: What software is used to write the EPS249OS.hfe image to a floppy?
Replies: 13
Views: 1263

Re: What software is used to write the EPS249OS.hfe image to a floppy?

It is a long story with this EPS and I was trying to restore it to factory. Will be wiser to follow your advice and try the GOTEK drive. I found this one on aliexpres. Says it is a GOTEK so I assume that is the right one. I notice there are 720kb and 1.44Mb Gotek drives. Does it make a difference co...
by gkmaia
Tue Jan 07, 2020 10:59 pm
Forum: Samplers
Topic: What software is used to write the EPS249OS.hfe image to a floppy?
Replies: 13
Views: 1263

Re: What software is used to write the EPS249OS.hfe image to a floppy?

If you really want to stay with diskettes then you have to verify that your PC drive is in proper alignment or otherwise in proper working order. Easiest way would be to get another similar PC or install another floppy drive into the same PC and do the same test. If both PC drives cannot easily rea...
by gkmaia
Mon Jan 06, 2020 9:12 pm
Forum: Samplers
Topic: What software is used to write the EPS249OS.hfe image to a floppy?
Replies: 13
Views: 1263

Re: What software is used to write the EPS249OS.hfe image to a floppy?

I went through several DD disks yesterday and got mixed results. Some disks would crash at 0% others at 70%. Pretty clear some of the 80 sectors were not functional anymore. I could manage to get ONE disk to format 100%, Write 100% and read 100%. Put both original.img and the image retrieved from th...
by gkmaia
Sun Jan 05, 2020 7:04 pm
Forum: Samplers
Topic: What software is used to write the EPS249OS.hfe image to a floppy?
Replies: 13
Views: 1263

Re: What software is used to write the EPS249OS.hfe image to a floppy?

You mean the replace the original windows FDC and Floppy drivers with the ones that comes in the package with Omniflop?

If that is it I've done that.
by gkmaia
Sun Jan 05, 2020 5:26 am
Forum: Samplers
Topic: What software is used to write the EPS249OS.hfe image to a floppy?
Replies: 13
Views: 1263

Re: What software is used to write the EPS249OS.hfe image to a floppy?

Thanks for the help. I did manage to get omni flop, install & license it. Test installation returns the drive supports the Ensoniq 800k formats plus auto sense. Test BIOS drive type returns 3.5" 1.44MB Formatted MF2-DD disks in a few different formats but when using the diagnostic diagnostic tool it...
by gkmaia
Sat Jan 04, 2020 10:14 pm
Forum: Samplers
Topic: What software is used to write the EPS249OS.hfe image to a floppy?
Replies: 13
Views: 1263

What software is used to write the EPS249OS.hfe image to a floppy?

I got a desktop with windows XP and an internal floppy drive. I could try to write the EPS system floppy myself as I have the OS image file already.

Would you be able to let me know what windows software is used to write the EPS249OS.hfe image to the floppy?
by gkmaia
Sat Jan 04, 2020 10:12 pm
Forum: General Synthesizers
Topic: Ensoniq EPS - disk not formated issue
Replies: 5
Views: 740

Re: Ensoniq EPS - disk not formated issue

I did a few more tests and hooked my logic analyser to the buffer that drives the data flow from the drive to the FDC and communication is happening as expected. If there is no disk in the drive the EPS prints "no disk". If there is a FAT16 disk the EPS disk prints "disk not EPS type". This means th...
by gkmaia
Fri Jan 03, 2020 7:47 am
Forum: General Synthesizers
Topic: Ensoniq EPS - disk not formated issue
Replies: 5
Views: 740

Ensoniq EPS - disk not formated issue

I am trying to bring an old Ensoniq EPS to life. Initially it was not even starting up. Then found it had 4 of DRAM ICs faulty. Replaced them now it loads the initial software present on the EPROMS and ask for a system disk. Then I got a newly recorded EPS v2.49 floppy from Ebay. Tried it, drive spu...
by gkmaia
Sun Nov 17, 2019 3:47 am
Forum: HELP!
Topic: Korg 35 filter testing circuit
Replies: 0
Views: 574

Korg 35 filter testing circuit

I am trying to build a testing circuit for a Korg35 as per bellow. Has anyone here attempted to build this this circuit? If so... what would be VI (has not description on the schematics, is it input or output?) and what would be the expected Vout peak-peak voltage? Thanks in advance. http://www.anal...