assume cs:code
code segment
start:
;////////////////////////////////////
;安装到软盘
mov ax,cs
mov es,ax
mov bx,offset softset
mov al,1
mov ch,0
mov cl,1
mov dl,0
mov dh,0
mov ah,3
int 13h
mov bx,offset subs ;//
mov al,2
mov ch,0
mov cl,2
mov dl,0
mov dh,0
mov ah,3
int 13h
mov ax,4c00h
int 21h
;//////////////////////////////
;显示菜单主页面
softset: jmp short intstart
db "1) reset pc 0"
db "2) start system0"
db "3) clock 0"
db "4) set clock 0"
db 0,0,0 ;读取2-3扇区 安装9号中断 f1
intstart: call clearscreen
mov byte ptr cs:[7c44h],0
mov ax,cs
mov ds,ax
mov bx,2h+7c00h
mov cx,4
mov dh,11
mov dl,30
lp: push cx
call showstring
inc dh
inc bx
pop cx
loop lp
mov bx,7c42h
mov al,cs:[bx]
cmp al,0
jne setint9h
mov ax,0 ;将002软盘扇区读到0：7e00h处
mov es,ax
mov bx,7e00h
mov al,2
mov ch,0
mov cl,2
mov dl,0
mov dh,0
mov ah,2
int 13h
mov bx,7c42h
mov byte ptr cs:[bx],1
setint9h: mov bx,7e0bh
mov al,cs:[bx]
cmp al,0
jne stop
call inspect
stop: mov ax,4c00h
jmp short stop
clearscreen:push bx ;清屏
push cx
push es
push ax
mov bx,0b800h
mov es,bx
mov bx,0
mov cx,2000
mov al,' '
mov ah,00000111b
s1: mov es:[bx],ax
add bx,2
loop s1
pop ax
pop es
pop cx
pop bx
ret
showstring:push ax ;显示菜单字符串
push dx
push bp
push es
mov ax,0b800h
mov es,ax
mov al,0a0h
mul dh
add dl,dl
mov dh,0
add ax,dx
mov bp,ax
column:
mov al,ds:[bx]
cmp al,'0'
je showret
mov ah,05
mov es:[bp],ax
inc bx
add bp,2
jmp short column
showret:
pop es
pop bp
pop dx
pop ax
ret
;///////////////////////////////////
;键盘中断
inspect:
push ax
push es
push cx
push cs
pop ds
mov ax,0
mov es,ax
mov si,offset int9-offset softset+7c00h
mov di,204h
mov cx,offset int9end-offset int9
cld
rep movsb
push es:[9*4]
pop es:[200h]
push es:[9*4+2]
pop es:[202h]
cli
mov word ptr es:[9*4],204h
mov word ptr es:[9*4+2],0
sti
pop cx
pop es
pop ax
ret
;////////////////////////////////
;九号中断安装及判断
int9: push bp
push bx
push cx
push ax
in al,60h
pushf
call dword ptr cs:[200h]
cmp al,1h
je isesc
mov bx,7c43h
mov cl,cs:[bx]
cmp cl,0
jne f1
num: cmp al,5h
ja f1
mov bx,7e00h
mov bp,sp
mov ss:[bp+8],bx
f1: mov bx,7c44h
mov cl,cs:[bx]
cmp cl,0
je f2
cmp al,3bh
jne f2
mov bx,7e0ah
add byte ptr cs:[bx],1
pop ax
jmp short ret1
f2: cmp al,3ch
jne int9ret
push cs:[200h]
pop cs:[9*4]
push cs:[202h]
pop cs:[9*4+2]
jmp short int9ret
isesc: mov bx,7e0bh
mov byte ptr cs:[bx],1
mov bx,7c43h
mov byte ptr cs:[bx],0
mov bp,sp
mov bx,7c00h
mov ss:[bp+8],bx
int9ret:pop cx
ret1: pop cx
pop bx
pop bp
iret
int9end:nop
;////////////////////////////////////
;功能子程序
subs: jmp short subsstart
dw offset sub1-offset subs+7e00h,offset sub2-offset subs+7e00h,offset sub3-offset subs+7e00h,offset sub4-offset subs+7e00h
db 1,0 ;颜色属性 判断九号中断是否要重装
subsstart: call clearscreen1
mov bx,0
mov ds,bx
mov bl,al
sub bl,2h
add bl,bl
mov bh,0
add bx,7e02h
blank: mov ah,01h ;清除缓冲区
int 16h
pushf
pop cx
and cx,0000000001000000b
cmp cx,0
jne execute
mov ah,0
int 16h
jmp short blank
execute: call word ptr ds:[bx]
clearscreen1:push bx ;清屏
push cx
push es
push ax
mov bx,0b800h
mov es,bx
mov bx,0
mov cx,2000
mov al,' '
mov ah,00000111b
s2: mov es:[bx],ax
add bx,2
loop s2
pop ax
pop es
pop cx
pop bx
ret
;功能子程序1
;/////////////////////////////////
sub1: jmp short sub1start
dw 0,0
sub1start: mov ax,cs
mov ds,ax
mov ax,0
mov bx,offset sub1-offset subs+7e00h
mov ds:[bx+2h],ax
mov ax,0ffffh
mov ds:[bx+4h],ax
jmp dword ptr ds:[bx+2]
;功能子程序2
;//////////////////////////////
sub2:jmp short sub2start
dw 0,0
sub2start:
mov ax,0
mov es,ax
mov bx,7c00h
mov al,1
mov ch,0
mov cl,1
mov dl,80h
mov dh,0
mov ah,2
int 13h
mov ax,cs
mov ds,ax
mov bx,offset sub2-offset subs+7e00h
mov ax,7c00h
mov ds:[bx+2h],ax
mov ax,0
mov ds:[bx+4h],ax
jmp dword ptr ds:[bx+2h]
;功能子程序3
;/////////////////////////////////////
sub3: jmp short sub3start
db 9,'/',8,'/',7,' ',4,':',2,':',0
sub3start:
mov bx,7c44h
mov byte ptr cs:[bx],1
mov bx,7c43h
mov byte ptr cs:[bx],1
mov dh,10
mov dl,20
mov bx,7c22h
mov ax,offset showstring-offset softset+7c00h
call ax
mov al,0
out 70h,al
in al,71h
cmp al,ah
jne one
jmp short sub3start
one: call clock
mov ah,al
jmp short sub3start
ret
clock: push ax
push bx
push cx
push si
push es
push bp
push dx
mov dh,14
mov dl,30
call getaddress
mov si,bx
mov bx,0b800h
mov es,bx
mov bx,offset sub3-offset subs+7e00h
add bx,1
mov bp,7e0ah;
mov cx,11
clockshow:push cx
inc bx
mov al,cs:[bx]
cmp al,10
jb showtime
mov ah,cs:[bp]
mov es:[si],ax
add si,2
timereturn:pop cx
loop clockshow
pop dx
pop bp
pop es
pop si
pop cx
pop bx
pop ax
ret
showtime:
call deal
mov cl,ah
mov ah,cs:[bp]
mov es:[si+2],ax
mov al,cl
mov es:[si],ax
add si,4
jmp short timereturn
deal:
push cx
out 70h,al
in al,71h
mov ah,al
mov cl,4
shr ah,cl
and al,00001111b
add ah,30h
add al,30h
pop cx
ret
getaddress:push ax
push dx
mov al,0a0h
mul dh
mov bl,dl
add bl,bl
mov bh,0
add bx,ax
pop dx
pop ax
ret
sub4: jmp short sub4start
db 'y','m','d','h','m','s'
db 0,2,4,7,8,9
sub4start:push dx
push bx
push ax
push es
mov dh,10
mov dl,20
mov bx,7c32h
mov ax,offset showstring-offset softset+7c00h
call ax
push cs:[200h] ;还原九号中断例程
pop cs:[9*4]
push cs:[202h]
pop cs:[9*4+2]
mov dh,15
mov dl,30
call getaddress
sub bx,2
mov bp,bx
mov ax,0b800h
mov es,ax
mov bx,offset sub4-offset subs+7e02h
mov cx,6
setshow: mov al,cs:[bx]
mov ah,00001100b
mov es:[bp],ax
inc bx
add bp,6
loop setshow
sub bp,4
set: mov ah,2
mov bh,0
int 10h
mov ah,0 ;0~9判断及处理
int 16h
judge1: cmp al,30h
jb judge2
cmp al,39h
ja judge2
cmp dl,30
jb set
cmp dl,46
ja set
mov ah,9
mov bl,00000111b
mov bh,0
mov cx,1
int 10h
nu: inc dl
call isinput
jcxz set
jmp short nu
judge2: cmp ah,4bh
je con1
cmp ah,4dh
je con2
cmp ah,0eh
je con3
cmp ah,1ch
je reserve
jmp short set
con1: dec dl
call isinput
jcxz set
jmp short con1
con2: inc dl
call isinput
jcxz set
jmp short con2
con3: dec dl
call isinput
jcxz delete
jmp short con3
delete: mov ah,2
mov bh,0
int 10h
mov ah,9
mov al,' '
mov bl,00000111b
mov bh,0
mov cx,1
int 10h
jmp short set
reserve: mov bx,offset sub4-offset subs+7e08h
mov cx,6
alter: push cx
mov dh,es:[bp]
mov dl,es:[bp+2]
sub dx,3030h
mov cl,4
shl dh,cl
add dh,dl
mov al,cs:[bx]
out 70h,al
mov al,dh
out 71h,al
sub bp,6
inc bx
pop cx
loop alter
mov bp,sp
mov ss:[bp+08h],7c00h
mov bx,7e0bh
mov byte ptr cs:[bx],0
pop es
pop ax
pop bx
pop dx
ret
isinput: push ax
push dx
push bx
push es
mov ax,0b800h
mov es,ax
mov al,0a0h
mul dh
mov bl,dl
add bl,bl
mov bh,0
add bx,ax
mov al,es:[bx+1]
cmp al,00001100b
jne no
mov cx,1
jmp short isret
no: mov cx,0
isret: pop es
pop bx
pop dx
pop ax
ret
code ends
end start
