ST9 datasheet(127/146 Pages) STMICROELECTRONICS

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ST9 USER GUIDE

5.4.3.3.2 Part6: MMU setup

/* +------------------------------------------------------------+

| PART 6: MMU SETUP

+------------------------------------------------------------+ */

#if defined(MEDIUM)

;

Initialisation of registers controlling external memory interface

;

EMR1 reset value is x000-000M

;

MC, DS2EN, ASAF, NMB, ET0, BSZ should be checked against user

;

memory configuration and EMR1 set accordingly

;

EMR2 reset value is M000-1111

;

ENCSR is 0, which selects ST9 compatibility mode for interrupt

handling.

;

DMEMSEL, PAS1, PAS0, DAS1 and DAS0 should be checked against user

memory

;

configuration and set complementary to WCR in page #0 (see below)

;

DPRREM is forced to one to have DPRi registers accessible in group E

;

EMR2, #EMR2_dprrem

; remap data page registers

;

Initialization of DPR registers with initial value

;

DPR0, #_idpr0

DPR1, #_idpr1

DPR2, #_idpr2

DPR3, #_idpr3

#else

/* MEDIUM */

;

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