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/  Forum Index
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      /  Micro-A1 troubleshooting
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PosterThread
NutsAboutAmiga 
Re: Micro-A1 troubleshooting
Posted on 6-Oct-2021 18:55:33
#61 ]
Elite Member
Joined: 9-Jun-2004
Posts: 11881
From: Norway

@Av8Retro

USB was big problem on this old computer, it might be USB issue, drain to many amps. Try different keyboard & mouse.

a lot people use powered hubs.

_________________
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Av8Retro 
Re: Micro-A1 troubleshooting
Posted on 6-Oct-2021 19:22:00
#62 ]
Member
Joined: 24-Aug-2021
Posts: 21
From: Unknown

@NutsAboutAmiga

No USB devices hooked up to the computer. Only PS/2 mouse and keyboard at this stage :) I figured I would minimize as many variations as possible until it was up and running properly.

I'm starting to see more limitations than benefits with this board (micro-A1) but it is impossible to find later "Amiga" boards on the market so I'm stuck with this one until/if a newer one ever comes to fruition, or someone wants to sell their X5000 :)

Cheers!

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NutsAboutAmiga 
Re: Micro-A1 troubleshooting
Posted on 6-Oct-2021 19:38:08
#63 ]
Elite Member
Joined: 9-Jun-2004
Posts: 11881
From: Norway

@Av8Retro

Its perfect storm via686b and ArticaS chip, as well

There is option in uboot for level or flank triggered interrupts,
maybe play with that setting. Also try disabling DMA, and use PIO mode 6.

Anyway, while sam460 is limited computers, its better in many ways, and its amazing to see Kas1e video with Radion RX card in it, yes not so power full CPU, but GPU makes up for it, in many cases.

Last edited by NutsAboutAmiga on 06-Oct-2021 at 07:43 PM.
Last edited by NutsAboutAmiga on 06-Oct-2021 at 07:40 PM.
Last edited by NutsAboutAmiga on 06-Oct-2021 at 07:39 PM.

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redfox 
Re: Micro-A1 troubleshooting
Posted on 6-Oct-2021 20:17:15
#64 ]
Super Member
Joined: 7-Mar-2003
Posts: 1857
From: Canada

@Av8Retro

Oh oh ... you have entered the alpha-tester zone for MicroA1.

The CD is for AmigaONE XE and SE and MicroA1. It is a generic install.

There are some drivers in the Kickstart files that cause trouble for the MicroA1.

Here are some fixes ... disable the USB ports first. This should stop most of the crashes.

1) disable 2 USB ports in U-Boot (I have rear USB ports disabled)
2) disable screen blanker
3) edit Kickstart file to disable drivers that you do not need.

For example,
- disable floppy drive (we don't have one)
- disable all the sii drivers (these are for PCI interface cards)
- we need Radeon driver, disable the other display drivers
- our USB ports do not support certain modes

I will get back to you with some further specifics.

---
redfox

Last edited by redfox on 07-Oct-2021 at 04:47 AM.

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Av8Retro 
Re: Micro-A1 troubleshooting
Posted on 6-Oct-2021 21:26:49
#65 ]
Member
Joined: 24-Aug-2021
Posts: 21
From: Unknown

@redfox

Much appreciated, thank you. I look forward to it.

In the meantime I'll disable all USB in u-boot

Cheers!

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redfox 
Re: Micro-A1 troubleshooting
Posted on 6-Oct-2021 22:37:53
#66 ]
Super Member
Joined: 7-Mar-2003
Posts: 1857
From: Canada

@Av8Retro

As before ...

1) disable 2 USB ports in U-Boot (I have rear USB ports disabled)
2) disable screen blanker
3) edit Kickstart file to disable drivers that you do not need.


1) Disabling USB Ports in U-BOOT (for example REAR USB ports):

This has to be done in U-BOOT during early boot phase.

Hit "spacebar" key on keyboard to enter the U-BOOT Preferences Menu

Select Integrated Peripherals

set USB Port 0/1 ... off
set USB Port 3/4 ... on
set User front USB port ... Yes

Hit "esc" key to return to main prefs window
Hit "esc" again

Save settings and exit "enter" key


2) Disable ScreenBlanker

Open Prefs/WBStartup Preferences
Uncheck SYS:Utilities/Commodities/ScreenBlanker
Save


3) Disable unused drivers in Kicklayout file ...

Edit Kickstart/Kicklayout file to disable some drivers ...

Disable the following by placing a ";" infront of each as shown.

;MODULE Kickstart/a1floppy.device.kmod
;MODULE Kickstart/it8212ide.device.kmod
;MODULE Kickstart/lsi53c8xx.device.kmod
;MODULE Kickstart/sii0680ide.device.kmod
;MODULE Kickstart/sii3112ide.device.kmod
;MODULE Kickstart/sii3114ide.device.kmod
;MODULE Kickstart/sii3512ide.device.kmod
;MODULE Kickstart/3dfxVoodoo.chip
;MODULE Kickstart/3DLabsPermedia2.chip
;MODULE Kickstart/ehci.usbhcd

Explanation:

We don't have a floppy drive, therefore disable a1floppy.device.

The sii drivers are for disk drive controller cards that go in the PCI slot. If you don't have one installed, you don't need the driver. If you have one installed, you need to enable the correct driver for that card.

Voodoo is for a Voodoo video card. We don't have one.

Enhanced USB does not work on MicroA1, don't use ehci.usbhcd.

I hope this helps.

Years ago, I had all 4 USB ports enabled. When I was attempting to install AmigaOS 4.1 Update 1, my system went crazy and was crashing constantly. Luckily, another MicroA1 user discovered the "temporary" USB port fix. After I disabled my REAR USB ports, my system worked normally again.

These issues for MicroA1 were not fixed in AmigaOS 4.1 Final Edition or the following two updates.

Presumably, it is possible to reenable all the USB ports again after you disable the offending lines in Kicklayout. I want to be able to recover my system using my CD so I leave the rear ports disabled.

---
redfox



Last edited by redfox on 06-Oct-2021 at 10:41 PM.

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redfox 
Re: Micro-A1 troubleshooting
Posted on 6-Oct-2021 23:18:19
#67 ]
Super Member
Joined: 7-Mar-2003
Posts: 1857
From: Canada

@Av8Retro

You have entered the alpha-tester zone for MicroA1

But you are not alone. We will help if we can.

I have been there many times over the years, and it can be very frustrating.

-----

At one point, I contemplated going all the way back to

AmigaOS 4.0 July 2007 Update

That was my warm and happy place where everything worked just fine.

-----

But that was a long time ago and I have found a new warm and happy place ...

AmigaOS 4.1 Final Edition Update 2 (hotfix)


---
redfox

Last edited by redfox on 06-Oct-2021 at 11:22 PM.
Last edited by redfox on 06-Oct-2021 at 11:21 PM.
Last edited by redfox on 06-Oct-2021 at 11:20 PM.

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