DMP Electronics eBOX-3350MX-AP Uživatelský manuál stáhnout pdf (Strana 58)

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 57

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

Is_Fast_Page_Mode_Type_DRAM :

mov ax, 03c3ch

call Read_From_Chip

and al, 11111101b ; Disable EDO DRAM timing detect

xchg ah, al ; mode

call Write_To_Chip

jmp Finish_DRAM_Type_Detection

Is_EDO_Type_DRAM:

mov ax, 03c3ch

call Read_From_Chip

and al, 11111101b ; Disable EDO DRAM timing detect

xchg ah, al ; mode

call Write_To_Chip

mov ax, 03737h

call Read_From_Chip

or al, 00000001b ; Set EDO DRAM mode

xchg ah, al

call Write_To_Chip

Finish_DRAM_Type_Detection:

pop ds

ret

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