DMP Electronics eBOX-3350MX-AP Manual do Utilizador descarregar pdf (Página 75)

386SX Single Chip PC Jan Yin Chan Electronics Co.,LTD.

DM&P M6117D : System on a chip

Page 74

Jan Yin Chan Electronics Co,. LTD. M6117D 386SX Single Chip PC

8F-1,No.22,Wuchyuan 2RD.,Hsin Chuang city Taipei Hsien, Taiwan, R.O.C. Tel: 886-(02) 2298-0770 Fax: (02) 2299-1883

SMI event

SMIJ Asserts

SMI acknowledge Asserts

Enter SMM mode : SMI routine

Read SMI cause

LPORTR 05Bh

Software

SMI

Mode Timer

Time-out

Trigger SMI

Access SMI

(I/O trap)

Clear SMI

Index 056h = bit 7

Clear Event

Index 056h:bit6

Clear Timer

Index 064h

Clear Event

Index

057h&058h

I/O Trap event

Index 06Bh & 05Ah

SMI Routine

Enable mode Timer

Index 064h

Enable Trigger related bit to

“1” index 057h & 058h

Enable SMI

LPORTW 056h, 084h

New SMI Event

RETPM :db 0D6h, 0E6h

a. Time-out SMI = Mode Time-out

b. Trigger SMI = IRQ,DRQ,IN_device access,

RTC alarm, EXTSW

c. I/O Trap SMI = GP0, GP1,LPT,HDD,VGA

d. Software SMI :

1. M1386



instruction

OPcode=0F1h

2. Set index 056h : bit 6

M1386 may enter its power saving

mode (internal clock stop) here and

wait for IRQ, NMI to wakeup

1 2 ... 70 71 72 73 74 75 76 77 78 79 80 ... 111 112

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