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FDC37C78 Datasheet(PDF) 63 Page - Microchip Technology

Part # FDC37C78
Description  Floppy Disk Controller
PDF  82 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

FDC37C78 Datasheet(HTML) 63 Page - Microchip Technology

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;-----------------------------.
; ENTER CONFIGURATION MODE
|
;-----------------------------'
MOV
DX,3F0H
MOV
AX,055H
;
CLI
; disable interrupts
OUT
DX,AL
OUT
DX,AL
STI
; enable interrupts
;-----------------------------.
; CONFIGURE REGISTERS CR0-CRx |
;-----------------------------'
MOV
DX,3F0H
MOV
AL,00H
OUT
DX,AL ; Point to CR0
MOV
DX,3F1H
MOV
AL,3FH
OUT
DX,AL ; Update CR0
;
MOV
DX,3F0H
;
MOV
AL,01H
OUT
DX,AL ; Point to CR1
MOV
DX,3F1H
MOV
AL,9FH
OUT
DX,AL ; Update CR1
;
; Repeat for all CRx registers
;
;-----------------------------.
; EXIT CONFIGURATION MODE
|
;-----------------------------'
MOV
DX,3F0H
MOV
AX,0AAH
OUT
DX,AL



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