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Dragon's Lair strange sound coming of game speakers on start https://www.daphne-emu.com:9443/phpBB3/viewtopic.php?f=29&t=3053 |
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Author: | Crocodilian [ Sat May 21, 2016 7:59 pm ] |
Post subject: | Dragon's Lair strange sound coming of game speakers on start |
I received Dexter a couple of weeks ago and have been busy, but finally got around to installing it yesterday. I think I was an early order and also told you about Shaun Wood's Merlin project back in the day... Good news is that it worked right out of the game (granted, I only tested it for a couple of minutes, but it emulated the LD-V1000 no problem). Background: Installed into standard machine (no Merlin board, had reverted back to original ROMs) with original LD-V1000 (bought a new one off ebay awhile back) - so original, standard DL machine. I bought Dexter w/DL, SA, and Thayer's Quest images. Questions: 1. When I powered up DL it made a rising pitch (do-do-do-do) sound out of game speakers. Clearly generated by GI sound chip. Sounded like a board error message (altering me). Never heard it before. It went away after sounding for a bit and machine booted up and worked. But this worried/worries me? Insights into what error it is flagging and whether this is normal would be appreciated. 2. I own a Merlin 8000 board and saw you a video on your FB page showing DL and SA running from same cabinet. I own both (as well as Thayer's Quest) and would like to do instant switching without having to go through Dexter Manager to manually do so. Do I just need to get a ROM update from Shaun for Merlin or is there more to it than that? 3. Is the DL image the one from the remanufactured disc with the added scenes? I also own that disc as well. |
Author: | Matt Ownby [ Sat May 21, 2016 8:01 pm ] |
Post subject: | Re: Dragon's Lair strange sound coming of game speakers on s |
Crocodilian wrote: 1. When I powered up DL it made a rising pitch (do-do-do-do) sound out of game speakers. Clearly generated by GI sound chip. Sounded like a board error message (altering me). Never heard it before. It went away after sounding for a bit and machine booted up and worked. But this worried/worries me? Insights into what error it is flagging and whether this is normal would be appreciated. Does it sound like a loud buzzing? I am getting that on my cab too with Dexter. It buzzes after the first beep but goes away after the second beep. I think it's harmless. I don't yet know what causes it. Quote: 2. I own a Merlin 8000 board and saw you a video on your FB page showing DL and SA running from same cabinet. I own both (as well as Thayer's Quest) and would like to do instant switching without having to go through Dexter Manager to manually do so. Do I just need to get a ROM update from Shaun for Merlin or is there more to it than that? Unfortunately, this feature isn't yet available to the public. It will require a Merlin and Dexter update when it's finished. Quote: 3. Is the DL image the one from the remanufactured disc with the added scenes? I also own that disc as well. yes, it is the 2002 limited edition disc. |
Author: | Crocodilian [ Sun May 22, 2016 3:42 pm ] |
Post subject: | Re: Dragon's Lair strange sound coming of game speakers on s |
No, the sound is not a buzzing. It is generated by the motherboard as it happens without audio Jack's plugged into Merlin. It is a tonal - tones of ascending pitches - repeated multiple times. The LED score panel does seem to work properly - counting down. The standard beeps also work. I'm wondering what the error tone is caused by and if it signifies a larger issue that needs correcting? Thanks |
Author: | Shaun Wood [ Sun May 22, 2016 5:15 pm ] |
Post subject: | Re: Dragon's Lair strange sound coming of game speakers on s |
What you describe sounds like the diagnostics test for the sound chip. But if you're using Merlin as your ROM board, that code has been removed, unless you actually have a LaserCon MultiROM board. You should check the label on the EPROM. If you do have a Merlin, and it can't be diagnostics, then the sound may be due to a failing GI Sound chip. I recommend that you remove and re-set your sound chip (U19), and then toggle all of your dip-switches. A7, which controls diagnostics may not be making good contact. If it is an issue with the ROM, just wait until Merlin-Dx is ready. You will be getting a new ROM when we do the upgrade. Be sure to remind me of this issue when you order the Dx upgrade. |
Author: | Crocodilian [ Tue May 24, 2016 1:20 pm ] |
Post subject: | Re: Dragon's Lair strange sound coming of game speakers on s |
Thanks, Shaun. I bet you are right on the dip switches as mine are a bit loose. When I get some time, I will try that before unseating the GI chip - and let you both know. Thanks |
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