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CT60 and related things BBS
| Re: PCI ok, Supervidel better |
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Posted by: Instream
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May,21.2005-14:41
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I agree about the Eclipse.
Our goal is to include a 3D engine in the FPGA, but not at first, since we want to release the SV as soon as possible. It's always possible to upgrade the FPGA later using a JTAG cable (same as when upgrading the CT60). To be included at first are the basic stuff, like the Super blitter and the extended resolutions.
About compatibility; Not quite sure what you mean with "Keeping 100% compatibility with regards to H/Vbl ints, not changing one instruction of the Falcons ROM is impossible"? If you talk about the PMMU solution, you're right that it's impossible. But our snooping solution requires no changes at all. As we said, all accesses to the ST-RAM also go into the SV DDR-RAM, so from the CPU's point of view, nothing has changed.
The only possible trap is when a DMA unit on the old falcon bus writes to the ST-RAM. Right now I don't know if Rodolphe's ABE chip lets those accesses through to the CT60 bus, so the SV can copy them. But the Super blitter will replace the old Blitter (with both the old and a new programming interface, as requested), so that's no problem then. But if someone tries to modify screen contents using another DMA unit, like the SDMA, then it's not compatible. But who codes such programs? :)
> Btw, how was TOS changed to work with CT60? I imagine that this took more patches than it would take to put in code for SV-on-PCI.
I guess TOS was changed quite a lot, but that's a question for Didier, I think. The 060 compatibility must have required this.
>I am no hardware expert, I just thought using off the shelf PCI interface chips to bring PCI connectivity to SV would be easier than
>developing your own PCI interface. I dont even know if this is correct ;)
Ok, I haven't even checked if such PCI chips exist. But we would have to interface to that chip anyway, so there's still some amount of extra work to be done in the FPGA.
Our suggestion is instead to make a non-PCI version for CT60-falcons now and, later, a PCI-version for other computers if there are enough interested buyers (>100). But I don't know if there are that many Hades/Milan users left...
>But what I think is this;
>
>If the SV will be 100% compatible with the Falcon's VDI in ROM (and then NVDI's Videl drivers), I agree on keeping SV as is. However,
>if you find that you need just "one patch here" or "a little fix there" to make it work, you've already lost the goal, compatibility.
Ok, but I don't think that some patches in the ROM justifies redesigning the SV as a PCI-card, since most people would have to recase their falcons then. And more importantly, there can't be a long flat cable going from the PCI adapter to the PCI slots, because of signal integrity reasons.
>Nature: Just out of curiosity, how many SV orders do you have, and how long to you think it may take for it to "hit the streets"?
We have no orders, no one has payed us anything. ;) But we have a list of 120 interested people. But that will probably change when the card is ready, both up and down.
Right now we're still finishing the EtherNat first. But then work will continue on the SV. Hard to say exactly how long it will take, since all expectations have failed so far.
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[All messages in this thread] [Start new thread]
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Topic
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Posted by
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Date
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PCI Bridge
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RobM
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May,15.2005-18:15
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Re: PCI Bridge
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Ozk
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May,15.2005-18:21
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Re: PCI Bridge
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Gildor
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May,16.2005-14:44
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Re: PCI Bridge
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vulgar
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May,16.2005-21:52
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Re: PCI Bridge
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Ozk
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May,16.2005-22:32
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Re: PCI Bridge
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Adam Klobukowski
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May,17.2005-07:37
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Re: PCI Bridge
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-XI-/Satantronic
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May,17.2005-09:02
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Re: PCI Bridge
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mikro
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May,17.2005-09:22
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Re: PCI Bridge
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raphael
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May,17.2005-09:42
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Re: PCI Bridge
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deez
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May,17.2005-11:21
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Re: PCI Bridge
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sqward
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May,17.2005-11:53
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Re: PCI Bridge
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plicken
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May,17.2005-12:37
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Re: PCI Bridge
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neurotics
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May,17.2005-14:31
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Re: PCI Bridge
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tobias
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May,17.2005-15:06
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Re: PCI Bridge
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Cih
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May,17.2005-15:26
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Re: PCI Bridge
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Philipp Donzé
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May,17.2005-15:50
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Re: PCI Bridge
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samf
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May,17.2005-16:04
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Re: PCI Bridge
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CiH
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May,17.2005-17:56
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Re: PCI Bridge
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Coda
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May,17.2005-18:08
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Re: PCI Bridge
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gwEm
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May,17.2005-19:08
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Re: PCI Bridge
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Didier Méquignon
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May,17.2005-19:49
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Re: PCI Bridge
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JoeIron
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May,17.2005-20:18
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Re: PCI Bridge
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Anonyme
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May,17.2005-20:38
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Re: PCI Bridge
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Zorro
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May,17.2005-20:41
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Re: PCI Bridge
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Mark
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May,17.2005-22:52
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Re: PCI Bridge
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cruzito
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May,18.2005-00:36
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Re: PCI Bridge
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Peter
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May,18.2005-09:00
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Re: PCI Bridge
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Rodolphe
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May,18.2005-10:05
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Re: PCI Bridge
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ozk
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May,18.2005-15:54
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Re: PCI Bridge
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Darth Vader
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May,19.2005-10:04
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Re: PCI Bridge
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evil
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May,20.2005-08:06
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Re: PCI Bridge
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ozk
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May,18.2005-12:05
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Re: PCI ok, Supervidel better
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Crash
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May,18.2005-15:13
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Re: PCI ok, Supervidel better
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ozk
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May,18.2005-15:49
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Re: PCI ok, Supervidel better
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vulgar
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May,18.2005-17:16
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Re: PCI ok, Supervidel better
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Ozk
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May,18.2005-20:12
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Re: PCI ok, Supervidel better
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Ozk
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May,18.2005-20:15
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Re: PCI ok, Supervidel better
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CiH
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May,18.2005-21:23
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Re: PCI ok, Supervidel better
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cruzito
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May,19.2005-01:14
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Re: PCI ok, Supervidel better
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Peter
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May,19.2005-08:42
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Re: PCI ok, Supervidel better
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Coda
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May,19.2005-12:44
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Re: PCI ok, Supervidel better
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Nature
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May,19.2005-13:33
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Re: PCI ok, Supervidel better
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Coda
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May,20.2005-17:12
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Re: PCI ok, Supervidel better
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Ozk
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May,20.2005-21:10
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Re: PCI ok, Supervidel better
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Instream
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May,21.2005-14:41
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PCI good, SV better!
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Dark Willow
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May,22.2005-17:34
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Re: PCI good, SV better!
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Crash
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May,25.2005-01:35
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Re: PCI good, SV better!
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samf
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Jun,01.2005-20:31
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Re: PCI good, SV better!
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Dark Willow
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Jun,05.2005-22:13
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Re: PCI Bridge
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Piotr Kruzycki
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May,21.2005-23:19
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What's the anti-troll code?
That's your personal code to be able to add comments and messages on the dhs.nu site.
Don't have a code or forgot it? Fix it here.
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