Microdisc controller + Amplibus, do you want another batch?

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Silicebit.
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Re: Microdisc controller + Amplibus, do you want another batch?

Post by Silicebit. » Sat Oct 28, 2017 1:23 pm

List updated and private messages sent. :-)
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kerkyra2007
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Re: Microdisc controller + Amplibus, do you want another batch?

Post by kerkyra2007 » Tue Nov 07, 2017 10:24 pm

Microdisc controler received in the most professional packaging.
With the box already in my hands it works OK.
https://www.dropbox.com/s/xazda0qd8s813 ... 6.jpg?dl=0
I have only one problem with the power option.
------------------------------------------
1.- Unset the jumper 5V->33 and use independent PSU for Oric and controller.
2.- Set the jumper 5V->33 and use one PSU to power controller, and through controller, power the Oric too. As Chema said, not use the Oric PSU!!
-----------------------------------------
With option one after pushing the reset button on the controller works OK
with option two the system is not booting at all.
In case ther is no way to boot with the microdisc psu only what is the way to start the system ? first the microdisc and then Atmos or vice versa?
Anyway this was my first ever computer (@1984) and it is very nice to have a disc drive attached to it.
Also one more question the floppy cable is a little bit too long (0.50M) and it is stacked in the box between the drive and the controler. is there any problem with heat there?

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Silicebit.
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Re: Microdisc controller + Amplibus, do you want another batch?

Post by Silicebit. » Thu Nov 09, 2017 11:35 am

kerkyra2007 wrote:
Tue Nov 07, 2017 10:24 pm
Microdisc controler received in the most professional packaging.
With the box already in my hands it works OK.
https://www.dropbox.com/s/xazda0qd8s813 ... 6.jpg?dl=0
Happy the parcel has arrived good.

kerkyra2007 wrote:
Tue Nov 07, 2017 10:24 pm
I have only one problem with the power option.
------------------------------------------
1.- Unset the jumper 5V->33 and use independent PSU for Oric and controller.
2.- Set the jumper 5V->33 and use one PSU to power controller, and through controller, power the Oric too. As Chema said, not use the Oric PSU!!
-----------------------------------------
With option one after pushing the reset button on the controller works OK
with option two the system is not booting at all.
The option two works fine in most cases but, There are a few Orics that they don't like the second option. That's the reason why I used a jumper. I think that could be a problem of voltage levels, perhaps you could try with another PSU.

kerkyra2007 wrote:
Tue Nov 07, 2017 10:24 pm
In case ther is no way to boot with the microdisc psu only what is the way to start the system ? first the microdisc and then Atmos or vice versa?
Anyway this was my first ever computer (@1984) and it is very nice to have a disc drive attached to it.
To start the system with two PSU there are not an established process, you can start up the Oric first and after the controller or viceversa, I use the first method habitually.

kerkyra2007 wrote:
Tue Nov 07, 2017 10:24 pm
Also one more question the floppy cable is a little bit too long (0.50M) and it is stacked in the box between the drive and the controler. is there any problem with heat there?
The controller (Rev. H and Rev. H1) is built with CMOS components, scarcely they warm up, no problem with heat.

My recommendations:

-. Use a ribbon cable between Amplibus and controller as short as possible.
-. Use a good quality PSU.
-. The CMOS components are sensible to electrostatics discharges, please be careful when handle the controller and Amplibus. Encloses the controller in a box is the best to handle it.

The controller can handle up to four disk drives, all them can be different sizes, you can have attached to controller one 3" drive, one 3.5" drive, one 5.25" drive and one Gotek with HxC firmware or FlashFloppy firmware.

DS0 = drive A (boot drive)
DS1 = drive B
DS2 = drive C
DS3 = drive D

Any PC disk drive could be valid: A few disk drives tested and ok.
Last edited by Silicebit. on Thu Nov 09, 2017 6:11 pm, edited 1 time in total.
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kerkyra2007
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Re: Microdisc controller + Amplibus, do you want another batch?

Post by kerkyra2007 » Thu Nov 09, 2017 12:10 pm

Thank you for the reply.
I will try your recomendations.
The controller is inside the box recommended from others in the spanish forum.
I think I will order also the box for the amblibus as well sure it looks very sensitive.
Edit : I checked with higher amp 3.0 PSU and still atmos does not not want to boot from the controller. Never mind with two psu's is good as well.

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