I think you might be over-estimating what that "DMA hack" would actually buy you. Lets first take a look at what is supported on the Mediator - out of the box - by the way, with OS 4.1 Classic:
-Realtek 8029 Network card that can get you about 800KB/sec.
-PCI Radeon 9200 or 9250 with up to 256MB of graphics card memory and hardware accelerated Warp3D, MiniGL, and compositing for nice transparency and effects on the Workbench
-Or choose a Voodoo 3/4 or 5 PCI card with up to 32MB of gfx ram.
-Silicon Image PCI Serial ATA cards based on the 3112, 3114, or 3512 chipsets. SATA CDROM/DVD ROM drives, External Docks, SATA hard disks.
-ESS Solo-1 PCI Sound card
I was aware of the RTL8029AS PCI card, which I'd already mentioned, and of course the Radeon and Voodoo GFX cards I am aware of also.
I read on the Hyperion Blog there was testing of the PCI SATA cards, but I missed the confirmation that certain SATA PCI cards were supported under Classic OS4.1?
However, the release information did not state which chipsets were supported, so your information is of more use, but should have been in the level of detail you've supplied on the release information.
Of course it is a good thing that it is supported, and welcomed.
Communications is a great skill, it seems very much forgotten by the release team.
Ok, so what would that DMA hack buy us?
1) Maybe the capability to use gfx card memory as an addition to physical ram.
2) The possibility to use a 100Mbit network card
3) The possibility to use a SB 128 PCI sound card, and perhaps a few other models
4) The possibility to use an Analog TV Tuner card
5) The possibility to use a 3rd party SCSI card driver (which is like 1MB/sec last I checked)
Ok...
For 1) You can use a ZorRAM or hard disk based swap partition. You don't need to take away any gfx card ram to use as physical ram (which, by the way, is way slower than any ram on the Blizzard PPC or Cyberstorm PPC).
Absolutely no use in a Mediator system on an A1200 as you cannot fit a ZorRAM card in it as there is no Zorro 3 interface on a Mediator or on a standard A1200, it is only of any use in an A4000, and maybe an A3000 also.
Are you the owner of a PPC A4000 or A3000 by any chance?
2) Even if you had a 100Mbit network card, the overall system isn't fast enough to get much over 1MB/sec. I have tried this under OS 3.9 - using a 100Mbit card, and really, the performance difference is almost non-existing. You are better off to use a USB network adapter connected to a Deneb and you can get nearly 1MB/sec.
Again you are quoting using a piece of hardware, Deneb, that can ONLY be used in Zorro 3 interface, which doesn't exist in an A1200 Mediator system. What's more, if I got a little more speed out of a 100MB NIC, then that would be an improvement in any case, and I'd take that opportunity, but it's being denied us.
You haven't thought your response through very well so far I am sorry to say.
3) ESS Solo-1 works fine, other sound cards would buy you next to nothing additional.
The ESS Solo-1 Soundcard is an old PCI card, and is now very difficult to get hold of, and I don't know of an Amiga supplier that stocks it, do you? The other soundcards are very easy to acquire, so why go and develop for a soundcard that is obscure and difficult to come by in significant numbers for Mediator users that might need one for Classic OS4.1?
4) Analog TV is on the way out, in fact most countries already discontinued it. Even if you had it. I mean really, do you want to use your Amiga to watch TV all the time?
That is a more valid point, but you can still plug in a Digital TV Freeview STB box with RF modulation into the TV card to get the Freeview channels shown through the Analogue TV card. Again, it's a device that can be used, though I haven't used mine that much of recent.
5) SCSI is nice, but SATA is so much easier (and faster than this 3rd party SCSI driver last I checked. nice to have it, but you have SCSI already on the cyberstorm PPC (sorry not blizzard yet), but still, SCSI is totally replaced in the real world since a long time.
Yes, but we're using a CLASSIC system here, and SCSI hardware is still a valid hardware format for CLASSIC systems, or else we wouldn't want a Classic OS 4.1 would we?
In any case why is the SCSI working on the A4000 accelerator cards, and not on the Blizzard SCSI adapter, if you know?
Taking all of this into consdieration: With OS 4.1 Classic you can use - out of the box - no additional drivers or setup required - a Radeon 9250 with 256MB, a SATA card, a PCI Sound card, and a PCI network card. Plus you can use Zorro cards like the Deneb, ZorRAM and others.
The points you make have some validity, but your main argument still does not answer why the DMA hack is not supported/allowed?
As we are using a CLASSIC system, then surely supporting CLASSIC hardware means supporting as much of the existing Classic Mediator hardware as possible to get the most from it.
Why allow the Radeon to function but dis-allow/prevent the Creative soundcards to function or the Spider USB card, or the TV card, or the faster RTL8139 NIC? It does not make any sense.
We are limited enough by what cards are available for the Mediator system, and to be limited even further by the rarer sound amd NIC cards is not a plus point for Classic OS4.1, yet you seem to be singing it's praises that it's cut off the majority of cards that the Mediator supported by using the DMA hack.
Not using a widely available soundcard which is what the ESS Solo-1 is, causes another problem for Mediator users as most opted for the more widely available Creative SB128 or similar models which are supported under the 68k Mediator PCI system drivers. So many users would have to hunt around on the internet to try to find one of these relatively obscure cards.
In my opinion that DMA hack (which by the way is only between PCI cards - not over Zorro and to the CPU card) is not required to make AmigaOS 4.1 Classic a nice functional upgrade for most Classic users who have PPC cards.
But you are forgetting that most Mediator users will have the cards that have been cut off by the Classic OS4.1 not supporting/allowing the 68k DMA hack.
So they, and I'm included in that bunch, am not very happy about losing those cards functionality, and I don't hear of any replacement Mediator PCI drivers for more up-to-date PCI cards being developed, not even after 3 years of hard development work, for Classic OS4.1 to supercede/replace drivers for those type of cards in the Mediator, or are there?
The out-of-the-box experience is *far superior* to AmigaOS 3.9 (and even 4.0 functionally) if you have a PPC card and a gfx card.
Of course, I cannot know if Classic OS4.1 is a "far superior" experience, UNLESS I am prepared to spend £100, and from what you've said still doesn't fill me with joy.
I'm still stinging from the Classic Amiga OS4.0 release which as I've said was the worst Amiga Workbench experience I have EVER had, and one that even now, 3-4 years after it's release, still is putting me off.
That's a lot to do with Hyperion's lack of support for Classic OS4.0, and the poor product that was released due to the initial incompatabilities, which should have been fixed, well before it was released - sign of a hurried product released to the market place, before thorough testing had been completed properly.
You don't even need a Mediator or Prometheus to be functional if you have Zorro equivalent cards.
Again, your presumably an A3000 or A4000 owner, and you've forgotten about those of us with an A1200 PPC card with no Zorro interface. That's why I got a Mediator as I can get a GFX card in it that way, and a soundcard, and a USB card, and a PCI SCSI card, and an ethernet PCI NIC - which I couldn't do as an A1200 is without a Zorro interface.
PS - just so you know, Hyperion worked with Elbox to properly support the Mediator in AmigaOS 4.1 Classic. We had questions, they answered them for us. They also provided the included FastATA driver. OK, no DMA hack, but really, it's not needed.
No, the Mediator is NOT PROPERLY SUPPORTED, as under OS3.9 68k there are PCI cards that function very well, thank you very much, but don't under Classic OS4.1.
No of course the DMA hack is not needed, if you don't mind your original Mediator system to be laid bare/denuded by the lack of DMA hack support.
I don't agree with your polarized view of Classic OS4.1 and the lack of DMA support for the Mediator which has not been supported as it should be by the latest Classic Amiga OS4.1, and wasn't over 3 years ago when Classic OS4.0 was released.
So not much/any re-design has gone on in the OS to support the Mediator's functionality, even with consultation with Elbox. Someone is to blame for that, and it's a disgrace.