VOGONS


Reply 1480 of 3172, by Batyra

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Mine (08) has just arrived! Waiting for parts from Digi-Key now 😁

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Visit my website: http://www.collection.batyra.pl

Reply 1481 of 3172, by Mischa

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Just registered to join the fun. I want to start a retro/demo/chiptune live project, and of course I shall be using GUS cards. I used to have an original GUS and a GUS PnP, and in fact they might be in a box... Somewhere...

Awesome project! I will be building two of these when the next production run comes up! 😀

Reply 1483 of 3172, by matze79

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Waiting for money to buy parts 😳

https://www.retrokits.de - blog, retro projects, hdd clicker, diy soundcards etc
https://www.retroianer.de - german retro computer board

Reply 1484 of 3172, by d0pefish

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Received mine last week but only picked it up from the post office today as I was out of the house.

Board looks fantastic, excellent work __shock and everyone involved!

I'll be ordering the components for this when my student loan comes in at the end of the month as I too am a bit short on cash 😉
Really looking forward to building it!

US1wUaR.pngg
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Reply 1485 of 3172, by hard1k

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Quite lame question (sorry if it has been already answered): IIRC the stereo jacks should have been arranged in the order of the cheap and common Vibra cards (CT4170?), but if this is correct, then a mounting hole on the PCB is missing. So the question is - what is the intended donor card for the bracket?

Fortex, the A3D & XG/OPL3 accelerator (Vortex 2 + YMF744 combo sound card)
AWE64 Legacy
Please have a look at my wishlist (hosted on Amibay)

Reply 1486 of 3172, by d0pefish

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It looks like the standoffs/screw posts of the joystick port would keep the bracket attached. Some of the smaller versions of the ESS AudioDrive based cards seem to have this layout and not have the additional mounting screw through the PCB.

US1wUaR.pngg
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Reply 1487 of 3172, by hard1k

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That's true, but there are lots of them, and neither can be identified clearly beforehand. An identifiable model would be much more convenient. And if the Vibra is chosen, then it makes more sense to make the hole instead of cutting the bracket.

Fortex, the A3D & XG/OPL3 accelerator (Vortex 2 + YMF744 combo sound card)
AWE64 Legacy
Please have a look at my wishlist (hosted on Amibay)

Reply 1488 of 3172, by d0pefish

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Good points 😀

I wonder how feasible getting custom brackets laser-cut would be?
The PC MIDI clone card I bought from marmes/keropi seemed to have a custom made bracket and it was quite good quality - would be nice if the cost of producing a batch isn't too bad.

US1wUaR.pngg
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Reply 1489 of 3172, by matze79

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Why not 3D Print them ?

https://www.retrokits.de - blog, retro projects, hdd clicker, diy soundcards etc
https://www.retroianer.de - german retro computer board

Reply 1491 of 3172, by Phreeze

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i'm assembling and found some 20K resistors on the bill of materials that i haven't put into my list...damn. Can we take 22k instead ?
Resistors are: R71, R73, R75, R77

the other resistors around them are 10K like R72 e.g

edit: *ç&%*&"= i also forgot the 2.2K resistors! hope my local shop has them..will check monday..grrr
edit2: and 2.2uF are missing (SMD)

Last edited by Phreeze on 2018-01-14, 15:16. Edited 1 time in total.

ArGUS Parts list: http://bit.ly/2Ddf89V

Reply 1493 of 3172, by 640K!enough

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moturimi1 wrote:
Regarding the Flash ROM: Do all 29F800B types work? There are BT and BB types available. Boot code sector architecture: B = bot […]
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Regarding the Flash ROM:
Do all 29F800B types work? There are BT and BB types available.
Boot code sector architecture:
B = bottom sector
T= top sector
Which one to choose?

The sector organisation makes no difference for our purposes. As long as it has an access time of 70 ns or less, it should be fine.

Reply 1495 of 3172, by Phreeze

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So far so good. Just missing some resistors. I'll add rhem to the digikey parts list and also into the excel sheet

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ArGUS Parts list: http://bit.ly/2Ddf89V

Reply 1496 of 3172, by Phreeze

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updated cart (some admin can edit my post on one of the earlier pages..)

http://www.digikey.lu/short/q890rp
still not in there: sockets and Bank-RAM chips as they are not needed.

edit: 16.01: updated cart with new sub d conns

Last edited by Phreeze on 2018-01-16, 09:27. Edited 1 time in total.

ArGUS Parts list: http://bit.ly/2Ddf89V

Reply 1498 of 3172, by shock__

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What temperature are you using?
Some passives have quite a bit of 'tombstoning' ... potentially leading to shorts. Did you check those? Is the DSUB sitting flush with the edge of the PCB? If it helps it should be a "US type" (there's also a european one).
If you intend to use the screwholes for the voltage regulators the legs need to be bent back slighty kinda like this:

[       ]----
/
|

A good way to solder small passives is using the "tack and reflow method". Add solder to one pad, put the component on there using pliers, reheat the solder soldering the first contact and then manually solder the second contact once the component has been aligned properly. Another good "plan of attack" is going from small to big (passives first, then ICs, then jacks/caps/sockets).

If you set JP4 & JP5 you should be able to at least flash the PNPROM, check the wavetable rom for integrity, set the resources. If you install a RAM stick (and set JP0 - JP3), you should also be able to use the card (albeit without any output).

Current Project: new GUS PnP compatible soundcard

[Z?]

Reply 1499 of 3172, by gdjacobs

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shock__ wrote:

A good way to solder small passives is using the "tack and reflow method". Add solder to one pad, put the component on there using pliers, reheat the solder soldering the first contact and then manually solder the second contact once the component has been aligned properly. Another good "plan of attack" is going from small to big (passives first, then ICs, then jacks/caps/sockets).

I call that the push down method. Load the pad with a modest amount of solder (so the contacts aren't vertically very far out of position) and push the leads down with the iron as the solder heats and re-flows.

All hail the Great Capacitor Brand Finder