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Raven. A homemade Atari-like computer

A homemade Atari-like computer based on 68060 and various Atari ST like peripherals
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agranlund
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Re: Raven. A homemade Atari-like computer

Post by agranlund »

I think I found a really good compliment to the GUS:

Some kind of el-cheapo soundblaster compatible but most importantly it has Yamaha OPL3, Wavetable header, internal headers for all audio in/outs, and shares the same color as the GUS. The size makes it possible to fit in a slot above the GUS too!
I may end up not having the gameport connected but for now I made the cable black at least. I'll replace those three white box headers next since this card is likely going to end up in the topmost slot.
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I may have gone a bit overboard..
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The other red one, a later revision "Expertcolor" is similar but the OPL3 implementation comes from an Opti chipset rather than Yamaha. It came for cheap together with the version I wanted.

The black card was the cheapest. It looks quite fancy but it was a budget card and probably not a very good one.
That AD chipset has an interestingly bad OPL3 implementation so for a tenner I couldn't resist.

And a real Soundblaster because why not. It's one of those unpopular models among retro connoisseurs.
Ie; it's plug-and-play, OPL3 provided by CQM instead of Yamaha, and to top it off one of the revisions that can suffer the "soundblaster hanging midi note" bug when playing PCM and Midi at the same time.
Oldskool
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Re: Raven. A homemade Atari-like computer

Post by Oldskool »

He that looks a bit like this one I have although its green.

Does yours also have an ymf719.
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peters
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Re: Raven. A homemade Atari-like computer

Post by peters »

You've got me interested in midi now. :D

I'm looking for Milan compatible midi software and at the serdaco x2se daughter board for the SB16
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agranlund
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Re: Raven. A homemade Atari-like computer

Post by agranlund »

Oldskool wrote: Wed Jul 17, 2024 9:12 pm He that looks a bit like this one I have although its green.

Does yours also have an ymf719.

IMG_1763.jpeg
Yep exactly that chipset!
Opl and midi works like a charm and unlike the GUS, its mixer starts unmuted and with sensible volumes so I didn’t even need to bother writing any kind of initialization program for it :)

With both it and gus being hungry for isa resources i had to manually configure their pnp settings in isa_bios.inf to avoid conflicts.
I should really write some documentation/tutorial on how to do that since it’s just the text file and no fancy UI.
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agranlund
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Re: Raven. A homemade Atari-like computer

Post by agranlund »

peters wrote: Wed Jul 17, 2024 10:27 pm You've got me interested in midi now. :D

I'm looking for Milan compatible midi software and at the serdaco x2se daughter board for the SB16
Nice! I have the x2se on order from Serdaco, looking forward to comparing it with the tiny S2.
I also couldn’t resist ordering the McFly daughterboard while at it.. from what I saw on youtube that one sounds really bad, in a good way :)
So much cool stuff being made nowadays!
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PhilC
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Re: Raven. A homemade Atari-like computer

Post by PhilC »

I must confess to being very slow with getting the bits together to build my board, what with the cancer treatment getting in the way :lol: but having a good read on here makes me look to forward to getting it done. I've already got an X2GS, S2 and an E-Wave but keep looking at the McFly too.

Where did you guys get your ISA slots from? New or scavenged off of an old motherboard?
If it ain't broke, test it to Destruction.
Steve
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Re: Raven. A homemade Atari-like computer

Post by Steve »

when I built up an ST-ATX board, I bought my ISA slots from Aliexpress.
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PhilC
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Re: Raven. A homemade Atari-like computer

Post by PhilC »

Steve wrote: Thu Jul 18, 2024 9:18 am when I built up an ST-ATX board, I bought my ISA slots from Aliexpress.
Thanks Steve, that was going to be my first stop.
If it ain't broke, test it to Destruction.
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Re: Raven. A homemade Atari-like computer

Post by Oldskool »

PhilC wrote: Thu Jul 18, 2024 9:21 am
Steve wrote: Thu Jul 18, 2024 9:18 am when I built up an ST-ATX board, I bought my ISA slots from Aliexpress.
Thanks Steve, that was going to be my first stop.
For example:

https://nl.aliexpress.com/item/10050014 ... pt=glo2nld
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Re: Raven. A homemade Atari-like computer

Post by PhilC »

Thanks @Oldskool
If it ain't broke, test it to Destruction.
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