This is a known error. It is clipping. I think it was designed for new version of MT-32

Tempus wrote on 2024-03-12, 17:13:

This is a known error. It is clipping. I think it was designed for new version of MT-32

It's not a clipping sound, it's the wrong instrument playing for some reason.

I've installed an Orpheus I and the issue is gone. The problem seems to be the Hard MPU. I wonder if there is a Firmware update available to fix it.

Which instrument is replacing the explosion?

Also might want to read this: HardMPU + SoftMPU !?! + Wing Commander II + MT-32

Tempus wrote on 2024-03-12, 17:47:

Which instrument is replacing the explosion?

Here is what the intro sounds like.

I tried the other thread's trick running SoftMPU with my HardMPU and it does not work with my card. I get errors on the MT32.

what about trying a different serial cable? Is the baud fixed on these hardmpu cards?
how are you slowing down the system, like disable L2 cache?
your sound sample does sound like the custom samples are not working. The usual signs are the fireworks, dinging bell when the ships shoot, and a horn when the water drop drips in the barracks.
maybe try monkey island on the hard mpu card and see if it sounds right.

How do you switch delaysysex on and off on the hardmpu?

Pickle wrote on 2024-03-13, 01:13:

what about trying a different serial cable? Is the baud fixed on these hardmpu cards? how are you slowing down the system, lik […]
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what about trying a different serial cable? Is the baud fixed on these hardmpu cards?
how are you slowing down the system, like disable L2 cache?
your sound sample does sound like the custom samples are not working. The usual signs are the fireworks, dinging bell when the ships shoot, and a horn when the water drop drips in the barracks.
maybe try monkey island on the hard mpu card and see if it sounds right.

what about trying a different serial cable? It's a custom cable, I don't have another
Is the baud fixed on these hardmpu cards? I don't know. There is no software for it. It's all hardware.
how are you slowing down the system, like disable L2 cache? Yes, disabled L1, L2, L1 and L2, Turbo on and Off. I tried all combinations.

Does your MT-32 display any errors when sending sysex?

Tempus wrote on 2024-03-13, 10:41:

Does your MT-32 display any errors when sending sysex?

Not that I can see. You check the video I have attached.

Tempus wrote on 2024-03-13, 08:30:

How do you switch delaysysex on and off on the hardmpu?

I think it's Hardcoded.

This is the GitHub for v2. I have 1.1, but it's basically the same.

https://github.com/ab0tj/HardMPU

dfaber1 wrote on 2024-03-13, 10:58:

Tempus wrote on 2024-03-13, 10:41:

Does your MT-32 display any errors when sending sysex?

Not that I can see. You check the video I have attached.

I thought the game would pre-load sysex before it starts to play music.

Tempus wrote on 2024-03-14, 06:56:

dfaber1 wrote on 2024-03-13, 10:58:

Tempus wrote on 2024-03-13, 10:41:

Does your MT-32 display any errors when sending sysex?

Not that I can see. You check the video I have attached.

I thought the game would pre-load sysex before it starts to play music.

I think the system is just too fast for the HardMPU or the the card as an issue. I tried in another 486 DX2/66 and it's even worst. I think tha t I'll just go with the SoftMPU using the game port on the AWE32.

Thanks.

dfaber1 wrote on 2024-03-14, 11:02:

Tempus wrote on 2024-03-14, 06:56:

dfaber1 wrote on 2024-03-13, 10:58:

Not that I can see. You check the video I have attached.

I thought the game would pre-load sysex before it starts to play music.

I think the system is just too fast for the HardMPU or the the card as an issue. I tried in another 486 DX2/66 and it's even worst. I think tha t I'll just go with the SoftMPU using the game port on the AWE32.

Thanks.

You could try switching turbo off to see if it works. My i486DX2 works with old MT-32 if I slow it down with the turbo button. Also make sure you check for errors when it’s programming the MT-32 before music starts. A lot if games do that. Also make sure you use delaysysex with softMPU

Maybe the Isa bus is overclocked?

Pickle wrote on 2024-03-14, 12:25:

Maybe the Isa bus is overclocked?

The system uses a very rudimentary AMI BIOS. There is no options for ISA clock rate.

Pickle wrote on 2024-03-14, 12:25:

Maybe the Isa bus is overclocked?

Ok, I'm going nuts with this issue. I found out that the Bios has a "Engineer Mode" where you can change the AT Clock. It was set at 7.159Mhz. I changed it to CLK/4 and it seems to be working.

But now, My AWE32 CT2760 which has jumpers to specify the MPU401 address keeps showing a MPU401 on port 330 when it's physically configured to 300.

I use Unisound to initialize the card and my SET BLASTER is correctly configured to 300 but Unisound keeps showing that the card's MPU401 is initialized at 330 !? If I remove the HardMPU, it's shows correctly. It's like Unisound see's the HardMPU address for it's MPU041 and assign's it to the AWE32 for some reason.

I will try Creative's drivers to see if I have the same issue. I am starting to wonder if the BIOS is corrupted or something. I get inconsistent results at evey try...

dfaber1 wrote on 2024-03-14, 17:15:

Pickle wrote on 2024-03-14, 12:25:

Maybe the Isa bus is overclocked?

But now, My AWE32 CT2760 which has jumpers to specify the MPU401 address keeps showing a MPU401 on port 330 when it's physically configured to 300.

The jumper is open?

Tempus wrote on 2024-03-14, 17:47:

dfaber1 wrote on 2024-03-14, 17:15:

Pickle wrote on 2024-03-14, 12:25:

Maybe the Isa bus is overclocked?

But now, My AWE32 CT2760 which has jumpers to specify the MPU401 address keeps showing a MPU401 on port 330 when it's physically configured to 300.

The jumper is open?

yes