Jan Yin Chan Electronics Co.,LTD. 386SX Single Chip PC
M6117D : System on a chip
DM&P
Jan Yin Chan Electronics Co,. LTD. M6117D 386SX Single Chip PC Page 51
8F-1,No.22,Wuchyuan 2RD.,Hsin Chuang city Taipei Hsien, Taiwan, R.O.C. Tel: 886-(02) 2298-0770 Fax: (02) 2299-1883
INDEX 5BH
default 00H
Bit Description
7~5 reserved
4~0 SMI Cause register
0 0 0 0 0 : None
0 0 1 1 0 : Mode Timer Time out
0 1 0 0 0 : IRQ active
0 1 0 0 1 : DRQ active
0 1 0 1 0 : IN access
0 1 1 0 0 : EXTSW1 active (external
suspend switch input, level trigger)
0 1 1 0 1 : RTC alarm
0 1 1 1 1 : Software SMI
1 0 0 0 0 : EXTSW2 active (external
next SMI switch input, level trigger)
1 0 0 0 1 : VGA access (W A0000H-
BFFFFH, port 3B0H-3BFH)
1 0 0 1 0 : HDD access (R/W port
1F0H-1F7H)
1 0 0 1 1 : LPT access (R/W
378H-37FH or 278H-27FH)
1 0 1 0 0 : GP0 access (R/W GP0
defined area)
1 0 1 0 1 : GP1 access (R/W GP1
defined area)
Others : reserved
INDEX 5CH
default 00H
Bit Description
Select source to signal SMI when
occur. This selection based on
INDEX 5A bit 5 be set.
7 1: IRQ7 event selected
0 : IRQ7 event not selected
6 1: IRQ6 event selected
0 : IRQ6 event not selected
5 1: IRQ5 event selected
0 : IRQ5 event not selected
4 1: IRQ4 event selected
0 : IRQ4 event not selected
3 1: IRQ3 event selected
0 : IRQ3 event not selected
2 1: NMI event selected
0 : NMI event not selected
1 1: IRQ1 event selected
0 : IRQ1 event not selected
0 1: IRQ0 event selected
0 : IRQ0 event not selected
INDEX 5DH
default 00H
Bit Description
Select source to signal SMI when
happening. This selection based on
INDEX 5A bit 5 is set.
7 1: IRQ15 event selected
0 : IRQ15 event not selected
6 1: IRQ14 event selected
0 : IRQ14 event not selected
5 1: IRQ13 event selected
0 : IRQ13 event not selected
4 1: IRQ12 event selected
0 : IRQ12 event not selected
3 1: IRQ11 event selected
0 : IRQ11 event not selected
2 1: IRQ10 event selected
0 : IRQ10 event not selected
1 1: IRQ9 event selected
0 : IRQ9 event not selected
0 1: IRQ8 event selected
0 : IRQ8 event not selected
INDEX 5EH default 00H
Bit Description
Select source to signal SMI when
happened. This selection based on
INDEX 5A bit 6 is set.
7 1: DRQ7 event selected
0 : DRQ7 event not selected
6 1: DRQ6 event selected
0 : DRQ6 event not selected
5 1: DRQ5 event selected
0 : DRQ5 event not selected
4 1: DRQ4 event selected
0 : DRQ4 event not selected
3 1: DRQ3 event selected
0 : DRQ3 event not selected
2 1: DRQ2 event selected
0 : DRQ2 event not selected
1 1: DRQ1 event selected
0 : DRQ1 event not selected
0 1: DRQ0 event selected
0 : DRQ0 event not selected
(45 stránky)
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