Intel iapx 432 manual

iAPX 432 Interface Processor Architecture Reference Manual

Having established its identity, the processor proceeds to locate its processor object. It does this by assuming that the initial object table directory is located at physical mennry address 8 (see figure E-I). A segment header field of eight bytes precedes the initial object table directory. It further asstmles that the first storage descriptor in the directory locates an object table containing storage descriptors for processor objects. Using its processor ID as an index, the processor selects the storage descriptor from the object table which locates its processor object. After qualifying its processor object, the IP is able to find its localoomnuncation segment, where it examines the IPC message field. Now in logical reference mode, the IP can respond to the IPC message and per form all normal operations.

As usual, an IP will generate an interrupt after it responds to the IPC message. This second interrupt following reset indicates to the IP controller software that the IP is in logical reference mode and that normal execution may begin. Note that window 4 will then be configured as defined by the attributes encoded in the IP's processor object. Since window 4 provides the data path to the function request facility, the other windows may be configured inmediately by means of the ALTER MAP AND SELECI' mTA SEGmNr function.

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