DMP Electronics eBOX-3350MX-AP Manual do Utilizador descarregar pdf (Página 46)

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 45

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 30H

default 08H

Bit Description

7~4 reserved, must be 0

3 CPU speed, read only.

0 : low

1 : high

2~0 reserved, must be 0

INDEX 31H default 01H

Bit Description

7~6 reserved

5 Fast reset state

0 : enable

1 : disable

4 reserved

3 ~ 1 reserved, must be 0

0 Fast gate A20

0 : disable

1 : enable

INDEX 32H

default 00H

Bit Description

7 ISA I/O high speed

0 : disable

1 : enable

6 ISA memory high speed

0 : disable

1 : enable

5~1 reserved, must be 0.

0 Port F1 reset NP

0 : disable

1 : enable

INDEX 33H

default 00H

Bit Description

7~4 I/O recovery period definition

( unit : 250ns )

3 I/O recovery

0 : disable

1 : enable

2 On-chip I/O recovery

0 : disable

1 : enable

1 reserved

0 Must be 0

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 111 112

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