VOGONS


First post, by matze79

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MUS-2020 Prototype - Creative Game Blaster Clone

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This is Gameblaster Clone derived from MUS-1099 Design.

Anyone who knows the MUS-1099 knows what problems it has.
In particular its amplifier has an immense power and there is a lot of background noise.

The MUS2020 design lacks the finishing touches, but is promising.

My first test was to build the part with SMD components and to change the noise level, which was successful.
Unfortunately the PCB has a few careless mistakes.

-> PCB is too thin (0.2mm) (In the XT the slots are relatively wide, I just tinned the ISA contacts of the card .., it's just HASL anyway)
-> PCB is too short
-> Conductor tracks could be thicker

The missing capacitors in the picture are filters 😉

As promised, the first audio recordings:

https://youtu.be/5joxSDhRhFE

https://dosreloaded.de - The German Retro DOS PC Community
https://www.retroianer.de - under constructing since ever

Co2 - for a endless Summer

Reply 1 of 6, by keropi

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great to see an update on this, I also built the original card and it had severe noise issues...

🎵 PCMIDI mpu site buy+info
🎧 WIP Orpheus soundcard site
💻 WTB Amstrad PC7486SLC-33 system

Reply 3 of 6, by Benedikt

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While we're at it, you could also add a few keep-out areas for the copper pours and try to keep the different parts of the ground plane connected in as many places as possible to avoid unwanted antennas.

Reply 4 of 6, by matze79

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Thanks for suggestions!

https://dosreloaded.de - The German Retro DOS PC Community
https://www.retroianer.de - under constructing since ever

Co2 - for a endless Summer

Reply 5 of 6, by matze79

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https://github.com/matze79/MUS-2020

uploaded Files, as original project is also GPL and this is based on it.

Note that the Card needs some small Changes to fit perfect, but Hardware is working very well.

All 74 Chips should LS Types.

https://dosreloaded.de - The German Retro DOS PC Community
https://www.retroianer.de - under constructing since ever

Co2 - for a endless Summer