they must have never heard of the EISA standard before and assumed it was a combo PCI-ISA slot (because of the extra row of 32 bit pins) but PCI-ISA does not exist.
those riser cards in NLX boards probably look like an EISA card, but the manufacture probably didnt use the EISA spec, and rather just connected pins to pins from the riser slots to the motherboard.
believe me when i say PCI-ISA doesnt exist, i have a 1200 page A+ certification book, and it covers the most absurd things back to the 8088 days, and it mentions no such slot design as what they are saying.
Post by oompa loompa on Feb 13, 2006 0:43:21 GMT -5
allright, looked back at the datasheets, and it's called PISA =P (not pci-isa, like i guessed =D)
8. PISA BUS
PISA® is the proven space saving concept that provides full PCI and ISA Bus signals on just half-size Slot boards. The edge card connector provides the ISA signals on the upper row and the PCI signals on the lower row and uses the same connector known from EISA systems.
A detailed description of the signals and its timing characteristics is beyond the scope of this document. Refer to the PISA specification PISAD??? (three question marks holding the revision number) available on the Kontron web sites and the official ISA- and PCI-specifications for further details.
it's probably not in your book because the pisa probably isn't a standard, and for sbc's, it isn't used very often, and may be unique to kontron. the pisa slot is meant to connect to a backplane, which contains more power supply, an isa bus, and a pci bus. in my datasheet, they didn't give any pinouts on how the pisa bus is wired =(