DMP Electronics eBOX-3350MX-AP Manual do Utilizador descarregar pdf (Página 107)

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

DM&P M6117D : System on a chip

Page 106

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

Example B: Set GPCS0 decoder to I/O address 100h, 101h 8bit data bus write only.

; Please use TASM to compiler the following program.

; Execute under DOS environment.

;

.286

.model small

.code

Start proc c

mov ax,0c513h ; Unlock configuration register

call writechip

mov ax,0444h ; Enable IO address A[15-1], 8bit data bus write only.

call writechip

mov ax,0141h ; Set the GPCS0 A[15-8] is 01h. A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

call writechip ; 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 X = 100h, 101h

mov ax,0040h ; Set the GPCS0 A[7-1] is 00h.

call writechip

mov ax,0043h ; Set the GPCS0 mask A[15-8] is 00h, address A[15-8] full compare(set to" 0" is compare, set to "1" is don't care).

call writechip

mov ax,0042h ; Set the GPCS0 mask A[7-1] is 0000000Xb, address A[7-1] full compare.

call readchip :

and al,00000001b

or al,00000000b ;

xchg ah,al ;

call writechip ;

mov ax,0040h ;

call readchip

or al,00000001b

xchg ah,al

call writechip ; Active GPCS0 decoder single.

mov ax,0013h ; Lock configuration register

call writechip

mov ax,4c00h

int 21h

endp

readchip proc c

out 22h,al

nop

in al,23h

nop

ret

endp

writechip proc c

out 22h,al

nop

xchg ah,al

out 23h,al

nop

xchg ah,al

ret

endp

end

1 2 ... 102 103 104 105 106 107 108 109 110 111 112

Comentários a estes Manuais

Sem comentários

DMP Electronics eBOX-3350MX-AP Manual do Utilizador Página 107

Comentários a estes Manuais

Manuais e produtos relacionados com Barebones PC/estação de trabalho DMP Electronics eBOX-3350MX-AP