Each Smm Driver entry point used in PORT

Code

Description

0xC0

SMM_ACCESS

0xC2

SMM_CONTROL

0xC1

SMM_BASE

0xC3

SMMAP

0xC4

SMMCORE

0xC5

SMM_DISPATCH

0xC6

SMM_START

0xC7

SMM_RUNTIME

0xC8

S B_S M M_D IS PATC H

0xC9

SMM_THUNK

0xCA

S M M_AC P I_S W_C HILD

0xCB

SMM_SB_S3_SAVE

0xCC

SMM_PLATFORM

0xCD

SMM_GMCH_MBI

0xCE

S M M_F W_B LOC K_S E RVIC E

0xCF

SMM_VARIABLE

0xD0

SMM_IHISI

0xD1

SMM_INT15_MICROCODE

0xD2

SMM_PNP

0xD3

SMM_USB_LEGACY

0xD4

SMM_INT13_HDD

0xD5

SMM_INIT_PPM

0xD6

SMM_OHCI1394

0xD7

SMM_ SECURITY_HDD_PASSWORD_SERVICE

0xD8

SMM_OEM_SERVICE

0xD9

SMM_PPM

0xDA

SMM_DIGITAL_THERMAL_SENSOR

* If the BIOS detects error 2C, 2E, or 30 (base 512K RAM error), it displays an additional word-bitmap (xxxx) indicating the address line or bits that failed. For example, 2C 0002 means address line 1 (bit one set) has failed. 2E 1020 means data bits 12 and 5 (bits 12 and 5 set) have failed in the lower 16 bits. Note that error 30 cannot occur on 386SX systems because they have a 16 rather than 32-bit bus. The BIOS also sends the bitmap to the port-80 LED display. It first displays the check point code, followed by a delay, the high-order byte, another delay, and then the low-order byte of the error. It repeats this sequence continuously.

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