打字计时练习_汇编课程设计
打字计时练习
微机原理课程设计_打字计时练习_汇编课程设计说明:这是一个打字计时练习的程序,在缓冲区中预放了一些字母,运行时,可按照屏幕上
显示的字母输入练习,每输入完一行按回车键后,可显示出练习输入的时间.
stack segment para stack 'stack'
db 256 dup(0)
top label word
stack ends
data segment para public 'data'
buffer db 16h dup(0)
bufpt1 dw 0
bufpt2 dw 0
kbflag db 0
prompt db ' *please practise typing*',0dh,0ah,'$'
scantab db 0,0,'1234567890-=',8,0
db 'qwertyuiop[]',0dh,0
db 'asdfghjkl;',0,0,0,0
db 'zxcvbnm,./',0,0,0
db ' ',0,0,0,0,0,0,0,0,0,0,0,0,0
db '789-456+1230.'
even
oldcs9 dw ?
oldip9 dw ?
str1 db 'abcd efgh ijkl mnop qrst uvwx yz.'
db 0dh,0ah,'$'
str2 db 'there are some newspapers on the table.'
db 0dh,0ah,'$'
str3 db 'there are some clouds in the sky.'
db 0dh,0ah,'$'
str4 db 'she always eats her lunch at noon.'
db 0dh,0ah,'$'
str5 db 'i do not like autumn and winter.'
crlf db 0dh,0ah,'$'
colon db ':','$'
even
saddr dw str1,str2,str3,str4,str5
count dw 0
sec dw 0
min dw 0
hours dw 0
save_lc dw 2 dup(?)
data ends
code segment
assume cs:code,ds:data,es:data,ss:stack
main proc far
start:
mov ax,stack
mov ss,ax
mov sp,offset top
push ds
sub ax,ax
push ax
mov ax,data
mov ds,ax
mov es,ax
