Author Topic: Digitech WH-1 - Anyone know the eprom chip models? + ROMs?  (Read 7839 times)

mitchschaft

Re: Digitech WH-1 - Anyone know the eprom chip models? + ROMs?
« Reply #20 on: April 03, 2018, 03:51:32 AM »
I ordered that rotary after you posted this in January. It still hasn't arrived. He keeps saying wait two weeks. Lol

MüThing

Re: Digitech WH-1 - Anyone know the eprom chip models? + ROMs?
« Reply #21 on: November 10, 2018, 04:25:38 PM »
It's been just a little while, things have come and gone that have made doing any more on this project not any easier, but I'm back on top of it now and I hope I'm on the home straight.

Mitch, I'm awfully sorry to hear the encoder didn't arrive in such a timely fashion, I hope you either got a refund from them without much trouble or they eventually got it to you and reimbursed you in some way or another.

As for dumping the PROMs, I've taken the time to build a proper 82S147 -> 2716 adapter board (as proper as my skills will allow) and take some new dumps of both 82S147 chips.




They show up just fine in my programmers software and are different from the dumps that I took back in 2017. I have all of the resources to build another pair of 2716 -> 82s147 boards, and am waiting to receive some more 2716 EPROMs as the ones that I tried months back seemed to be corrupted and wouldn't erase (their contents would change with every read I took, even when done seconds apart).

mitchschaft

Re: Digitech WH-1 - Anyone know the eprom chip models? + ROMs?
« Reply #22 on: November 10, 2018, 11:57:04 PM »
I ended up reordering abd it showed up. Apparently the first order didn't go through and I wasn't even charged.

Prehistoricman

Re: Digitech WH-1 - Anyone know the eprom chip models? + ROMs?
« Reply #23 on: November 14, 2018, 04:05:16 PM »
Would you upload your new ROM dumps? Thanks

MüThing

Re: Digitech WH-1 - Anyone know the eprom chip models? + ROMs?
« Reply #24 on: November 16, 2018, 06:08:34 PM »
Would you upload your new ROM dumps? Thanks

Sure, I'd honestly forgotten to do this sooner: HERE!

Bear in mind they're still in the raw 2kb dump format due to being read as a 2716, but I imagine it'd be easy to trim the excess.

AdrianM55

Re: Digitech WH-1 - Anyone know the eprom chip models? + ROMs?
« Reply #25 on: July 05, 2020, 04:23:07 AM »
Hi,
Any updates on your project? I'm having slight problems with my Whammy in terms of Bypass signal being mixed with original signal on Whammy mode. I don't know how to address it hence I found this thread being very informative.

Adrian

mitchschaft

Re: Digitech WH-1 - Anyone know the eprom chip models? + ROMs?
« Reply #26 on: July 05, 2020, 05:04:32 PM »
I think the point was to dump the roms. Which he already did. That's as far as the project was supposed to go.

Re: Digitech WH-1 - Anyone know the eprom chip models? + ROMs?
« Reply #27 on: September 08, 2020, 03:24:25 PM »
Do you know the firmware version of the eprom  for the .bin files you uploaded? I'm assuming it's V2, but I think I need V3.

Thanks,
Sam

Would you upload your new ROM dumps? Thanks

Sure, I'd honestly forgotten to do this sooner: HERE!

Bear in mind they're still in the raw 2kb dump format due to being read as a 2716, but I imagine it'd be easy to trim the excess.