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PCI to ISA bridge
I would like to have further information about EPROM for PCI-to-ISA
bridge, 'cause I've got to switch an ISA card to PCI connector. I found Winbond (W83628F & W83629D) and ITE (IT8888F) kits for this purpose, I read their datasheets as their tentative schematics pusblished also on costronic.com site as I read "PCI System Architecture" as "ISA System Architecture" books. My doubt was the EPROM used for both solutions. I've got some ideas about the EPROM: it's expansion ROM for positive decode for ISA side of PCI-ISA chips; I also downloaded some Assembler code for a general purpose expansion ROM for the same. I understood that Rumtime Code is (or should be) permantly present in memory after boot. What runtime code should I write inside the EPROM? Does anybody encountered the same problem and found a solution? Thanks in advance |
#2
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If its just that you want to run ISA card(s) in newer motherboards which
only have PCI slots, it would be much simpler (at least in the short term) to just use some of the "specialist" motherboards out there that have ISA slots still in them. I know that Soyo did one for P4 CPUs based on the 845 chipset - they may even have newer versions now. Also if you search for "industrial" motherboards, there are manufacturers who have such products but these are generally very expensive. Conexant "internal" modem chipsets these days are designed for use with PCI slots however Mainpine ( http://www.mainpine.com ) have developed their own bridge circuitry to be able to use the latest Conexant ACF series chipset within a PCI card. Perhaps they may be able to assist by selling you a ready made solution to your needs? Are your needs related to telephony hardware or modems? Paul "Fla" wrote in message m... I would like to have further information about EPROM for PCI-to-ISA bridge, 'cause I've got to switch an ISA card to PCI connector. I found Winbond (W83628F & W83629D) and ITE (IT8888F) kits for this purpose, I read their datasheets as their tentative schematics pusblished also on costronic.com site as I read "PCI System Architecture" as "ISA System Architecture" books. My doubt was the EPROM used for both solutions. I've got some ideas about the EPROM: it's expansion ROM for positive decode for ISA side of PCI-ISA chips; I also downloaded some Assembler code for a general purpose expansion ROM for the same. I understood that Rumtime Code is (or should be) permantly present in memory after boot. What runtime code should I write inside the EPROM? Does anybody encountered the same problem and found a solution? Thanks in advance |
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or look for an older motherboard on Ebay, nO?
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"cat herder" wrote in message news:37gae.3074$Zi.627@fed1read04...
or look for an older motherboard on Ebay, nO? I had this problem 'cause I have to use a custom PC and it's impossible to change the motherboard. Thank you both for your replies. |
#5
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"Fla" wrote in message
m... "cat herder" wrote in message news:37gae.3074$Zi.627@fed1read04... or look for an older motherboard on Ebay, nO? I had this problem 'cause I have to use a custom PC and it's impossible to change the motherboard. Thank you both for your replies. You'd be able to change the motherboard (under the worst circumstances) if you change the case. It does mean additional expense however. The problem with older motherboards (eg from eBay) is that they likely support older CPUs and not the latest and greatest. What are your full system specs/hardware and why are you interested in a PCI to ISA bridge - is it as I suspected, related to a modem? Paul |
#6
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"Paul Murphy" wrote in message ...
"Fla" wrote in message m... "cat herder" wrote in message news:37gae.3074$Zi.627@fed1read04... or look for an older motherboard on Ebay, nO? I had this problem 'cause I have to use a custom PC and it's impossible to change the motherboard. Thank you both for your replies. You'd be able to change the motherboard (under the worst circumstances) if you change the case. It does mean additional expense however. The problem with older motherboards (eg from eBay) is that they likely support older CPUs and not the latest and greatest. What are your full system specs/hardware and why are you interested in a PCI to ISA bridge - is it as I suspected, related to a modem? Paul No.It's related to an industrial PC of Siemens and I don't know if it's possible to change the motherboard, but I suspect not. Thanks again for the reply. |
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