Nec Network Controller uPD98502 Uživatelský manuál stáhnout pdf (Strana 128)

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Preliminary User’s Manual S15543EJ1V0UM

2.4.5.13 TLB instructions

The instructions used for TLB control are described below.

(1) Translation lookaside buffer probe (TLBP)

The translation lookaside buffer probe (TLBP) instruction loads the Index register with a TLB number that matches

the content of the EntryHi register. If there is no TLB number that matches the TLB entry, the highest-order bit of

the Index register is set.

(1) Translation lookaside buffer read (TLBR)

The translation lookaside buffer read (TLBR) instruction loads the EntryHi, EntryLo0, EntryLo1, and PageMask

registers with the content of the TLB entry indicated by the content of the Index register.

(2) Translation lookaside buffer write index (TLBWI)

The translation lookaside buffer write index (TLBWI) instruction writes the contents of the EntryHi, EntryLo0,

EntryLo1, and PageMask registers to the TLB entry indicated by the content of the Index register.

(3) Translation lookaside buffer write random (TLBWR)

The translation lookaside buffer write random (TLBWR) instruction writes the contents of the EntryHi, EntryLo0,

EntryLo1, and PageMask registers to the TLB entry indicated by the content of the Random register.

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