Reply 20 of 29, by chrismeyer6
I still think it's a great setup. Do you have any other pictures of that system?
I still think it's a great setup. Do you have any other pictures of that system?
I got the idea from a friend on another forum who linked me to his build log here: https://www.sweclockers.com/galleri/14409-via … retro-lan-dator
Here's some more pictures of my build:
https://imgur.com/gallery/vG6KVaH
That's a nice build. You did a great job keeping it neat and clean looking. How is the performance with gaming?
It games quite well. Mid-range Coppermine Pentium III performance paired with Voodoo II's is good for 1998 and prior games.
Very nice. I do like the smaller footprint of that case. All around I really like that system.
wiretap wrote on 2021-01-22, 17:19:All it is doing is provding a path for bus enumeration.
https://en.wikipedia.org/wiki/PCI_configurati … Bus_enumeration
Nice! I really did not expect a bridgeless extender to work (referencing also your later posts in this thread). Since you seem way more knowledgeable and experienced than I am on this subject, do you know
a) if the typical BIOS in a motherboard with PCI slots will typically properly enumerate and initialize devices in "extended" PCI slots on the primary PCI bus to allow functionality in pure DOS or is Windows/Linux required ?
b) if PCI devices that require an IRQ will work properly on such an extender ?
c) if electrical and or signal propagation delay constraints the only reasons why bridged solutions are used (in the context of legacy PCI expansion, if conversion between PCI/PCI-X and PCI Express is needed a bridge is obviously required ) ?
d) what is the maximum number of slots a single legacy PCI bus can have and how do "extended" PCI slots figure into this maximum ?
wiretap wrote on 2021-01-22, 21:01:I got the idea from a friend on another forum who linked me to his build log here: https://www.sweclockers.com/galleri/14409-via … retro-lan-dator
Here's some more pictures of my build:
https://imgur.com/gallery/vG6KVaH
That's excellent 😀
darry wrote on 2021-01-23, 01:29:Nice! I really did not expect a bridgeless extender to work (referencing also your later posts in this thread). Since you seem w […]
wiretap wrote on 2021-01-22, 17:19:All it is doing is provding a path for bus enumeration.
https://en.wikipedia.org/wiki/PCI_configurati … Bus_enumerationNice! I really did not expect a bridgeless extender to work (referencing also your later posts in this thread). Since you seem way more knowledgeable and experienced than I am on this subject, do you know
a) if the typical BIOS in a motherboard with PCI slots will typically properly enumerate and initialize devices in "extended" PCI slots on the primary PCI bus to allow functionality in pure DOS or is Windows/Linux required ?
b) if PCI devices that require an IRQ will work properly on such an extender ?
c) if electrical and or signal propagation delay constraints the only reasons why bridged solutions are used (in the context of legacy PCI expansion, if conversion between PCI/PCI-X and PCI Express is needed a bridge is obviously required ) ?
d) what is the maximum number of slots a single legacy PCI bus can have and how do "extended" PCI slots figure into this maximum ?
(a) A device will work just as intended on the normal PCI slot.
(b) See (a)
(c) I don't quite know what the question is here, but these bridge/extender devices are normally used to conform to specific form factors. (i.e thin or desktop cases, ITX, 1U/2U servers, etc.)
(d) Per the PCI specificaiton, up to 256 buses, each with up to 32 devices, each supporting up to eight functions. I have some legacy rackmount servers at work that have 16 PCI slots in them (two 8-slot backplanes). With riser type cables that insert into one slot, you also have to take into account electrical power. If you try to drive too many devices off one slot, you can exceed the power rating of the slot and potentially damage the motherboard.
wiretap wrote on 2021-01-26, 17:32:(a) A device will work just as intended on the normal PCI slot. (b) See (a) (c) I don't quite know what the question is here, bu […]
darry wrote on 2021-01-23, 01:29:Nice! I really did not expect a bridgeless extender to work (referencing also your later posts in this thread). Since you seem w […]
wiretap wrote on 2021-01-22, 17:19:All it is doing is provding a path for bus enumeration.
https://en.wikipedia.org/wiki/PCI_configurati … Bus_enumerationNice! I really did not expect a bridgeless extender to work (referencing also your later posts in this thread). Since you seem way more knowledgeable and experienced than I am on this subject, do you know
a) if the typical BIOS in a motherboard with PCI slots will typically properly enumerate and initialize devices in "extended" PCI slots on the primary PCI bus to allow functionality in pure DOS or is Windows/Linux required ?
b) if PCI devices that require an IRQ will work properly on such an extender ?
c) if electrical and or signal propagation delay constraints the only reasons why bridged solutions are used (in the context of legacy PCI expansion, if conversion between PCI/PCI-X and PCI Express is needed a bridge is obviously required ) ?
d) what is the maximum number of slots a single legacy PCI bus can have and how do "extended" PCI slots figure into this maximum ?(a) A device will work just as intended on the normal PCI slot.
(b) See (a)
(c) I don't quite know what the question is here, but these bridge/extender devices are normally used to conform to specific form factors. (i.e thin or desktop cases, ITX, 1U/2U servers, etc.)
(d) Per the PCI specificaiton, up to 256 buses, each with up to 32 devices, each supporting up to eight functions. I have some legacy rackmount servers at work that have 16 PCI slots in them (two 8-slot backplanes). With riser type cables that insert into one slot, you also have to take into account electrical power. If you try to drive too many devices off one slot, you can exceed the power rating of the slot and potentially damage the motherboard.
Thank you for answers and my resulting education . For question c), I was mainly wondering in what scenario(s) PCI-PCI bridges would be absolutely necessary since, if I understand correctly what you are saying, even an extender device could conceivably be made without using a bridge chip .
For question c), I was mainly wondering in what scenario(s) PCI-PCI bridges would be absolutely necessary
PCI specs and electrical/chipset limit are two different things. Electrical limit is apparently 10 devices per one bus and chipset limit could be lower. And popular retro choices like 440BX just use PCI bus to connect north bridge and south bridge, so practically everything on SB is routed through PCI bus.
I must be some kind of standard: the anonymous gangbanger of the 21st century.