@kas1e

About the 'glue': it's a last minute modification to allow the boards to work on modern ATX power supplies.
Basically what happen ? the 'cr' board have less onboard components then the 'ex' version, and its power consumption is very very low, and some/many PSU basically don't sense any load and: or they don't start at all or they give not stable output, which in turn create stability issues.
The two resistors you see are there for increasing the power load, they are not there for 'repair'.
Next batch will have this (and other minimal modifications) directly onboard.

@kas1e

Quote:
What's the exact model ? On some HD cards not all ports works under u-boot, try using VGA if you're using DVI/HDMI or viceversa.
On the serial output, the "VESA: OK" is usually the last message, after that u-boot will output on the gfx board.

I'm testing the new driver on a Sam460cr, with both a Sound Blaster Audigy FX (the same card as Roman) and a CM8828 with CM9982 codec, but both cards don't work, on the serial console there is this message:

HD audio card failed to init

Is there a debug version of the driver to gather more info on why it failed to init?

If your board has 2 memory slots, it's the Sam440 Flex version

@mr2

In my opinion, the best solution on a Sam440-flex, with the last u-boot is a Radeon HD 7750 or above.
I've tested many RX 550 from different vendors, and so far almost all work well under AmigaOS but there is the issue with u-boot not showing a picture with many RX.

@NinjaCyborg

The one on the left, the little one, J18 :)

@RIBDEVIL

are you using DVI / HDMI ? In this case, can you try with VGA instead ?

@AmigaBlitter

I've successful used a RadeonHD 5450 (PCI version) on a Sam440ep mini-itx, with U-Boot 1.3.1f, using the RadeonHD 2.7 driver (needs External PCI gfx IRQ disabled from the u-boot menu)
Don't expect high CPU VRAM transfers speed (DMA transfers are faster), since data need to go through 2 PCI bridges, but everything which uses composite is very usable.

No idea if a Radeon HD 7xxx will work.

@all

we just released an official u-boot update (version 1.3.1f) for Sam440ep boards (both mini-itx and flex variants)

ACube web site will be updated shortly, in the meantime, interested flex users may download the new updater from this location:

http://www.soft3dev.net/firmware/Sam440ep-flex_updater_131f.zip

It solves some compatibility issues with some Radeon HD cards (but it's untested with 7xxx cards)

Please read the instructions carefully !

@utri007

at this point we need a debug output from serial to know exactly what's the real problem. It could still be a u-boot problem, or maybe a bug/misconfiguration on the AmigaOS4 side.

@RIBDEVIL

Does your 7xxx card show any video signal when starting the machine (ie the u-boot output) and then stop displaying after loading the kickstart files, or there isn't any video signal at all ?

If the former, the problem is that you need both the pcigraphic.library kmod and the RadeonHD lite driver from the AmigaOS 4.1 FE Sam460 CD (or the full driver from A-Eon)

I've compiled a new u-boot version for the 440 boards (both mini-itx and flex) and now Radeon HD 5xxx PCI cards can be used.

But I don't have any Radeon HD 7xxx card to test it on.
Is there any Radeon 7xxx PCI available on the market, or a PCI Express - PCI bridge needs to be used ?

@interrogative

all the Sam460 USB 2.0 ports (internal and external) are on an internal USB Hub.

@utri007

Yes, you still need it, the PCI updater is unrelated to the U-Boot version used.

@utri007

there is a sensible speed difference between a Radeon 9250 64-bit, and a Radeon 9000 128-bit, but the later is very hard to find.

The PCI update is highly suggested on your 800 Mhz model, it doesn't decrease RAM speed, and you'll see some more speed available in 3D games, videos, etc...

There is a new U-Boot for Sam440ep boards in the work, which will fix some problems with HD cards, release date is unknown at the moment.

Owner: m3x
Card: VTX3D Radeon HD 7750
Vendor: http://www.techpowerup.com/gpudb/b493/vtx3d-hd-7750.html
Confirmed system: Sam460cr
Form: Single Slot
Status: Working

@samo79

Sam460cr 1.1Ghz / 440 Mhz DDR2 with new U-Boot
VTX Radeon HD 7750
driver RadeonHD.chip 2.7
driver W3D_SI 1.8
minigl 2.20

640x480 - 30.2 FPS
800x600 - 29.3 FPS
1024x768 - 28.2 FPS
1280x1024 - 26.7 FPS

Cow3D: 144 fps.

We're currently working on the Minimg Plus project, and trying to finalize another one.

A couple of months ago I posted photos of the Minimig Plus prototype here:

http://amiga.ikirsector.it/forum/view ... .php?f=38&t=18150#p237325

@utri007

Quote:
Did you run "AmigaSetup" before ? The game runs fine on a Sam440ep mini-itx, just tried.

Quote:
There is no need to "unlock" nothing, the PCIe 1x slot is fully supported since some months now by the AOS4.q kernel.
Do you have any particular problem with such card in the PCIe 1x slot ?