Proteus中8259的仿真[无dos,纯手工]
pingf
posted @ Wed, 16 Mar 2011 14:05:32 -1100
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因为研究生复试的需要所以最近折腾了下8086的汇编,
不过proteus总是没有我预期的完美[可能也跟和谐的版本有关]
下面是折腾8259的一些总结,不过有一些问题,希望知道的能予以指正 
电路搭建,基于自带的例子 (原文件名:8259_1.png) 
程序源码 (原文件名:8259_2.png) 
断点设置 (原文件名:8259_3.png) 
仿真1 (原文件名:8259_4.png) 
仿真2 (原文件名:8259_5.png)
另外,一些问题罗列如下
-.我用的老王的77sp2和谐,不过逻辑仿真器貌似用不了啊
-.8259模型需要改一下[加几个字符]才能用于仿真
0.一开始会莫名其妙的产生一个终端,一般位于前16字节,所以我的程序在那里也设置了捕获的proc,要不然会跑飞,不知为何
1.下一次触发时才会相应正确的中断,而当前相应的为上一次的?不过Simulation Log里的信息倒是正确的
2.级联模式,次级的irr不会自动清除,至少我觉的应该自动清除的,导致响应时会被进制,当然可能是我程序的问题
3.软件触发的中断没问题,直接int xx出来的中断都可以正确的响应,个人感觉要么是我程序的问题,要么是8259模型的问题
4.Proteus中仿真用exe和com格式的都可以,我的程序是使用masm的,顺带试了下mingw套件里的gas汇编,com格式输出时也是可以的
不过没法调试,即使-gstabs加上了也不行.
*.上面的问题可能是本人程序上的错误,希望熟悉8086汇编的人能指正一下
工程文件ourdev_623172B3W6H8.rar(文件大小:32K) (原文件名:8086 Demo Board.rar) [放在ourdev上了]
源程序
.MODEL SMALL io8259_main_addr equ 0600H io8259_sub_addr equ 0800H .8086 .code io8259_std1_init macro base,icw1_val,icw2_val,icw4_val mov dx,base mov al,icw1_val out dx,al mov dx,base+2 mov al,icw2_val out dx,al mov al,icw4_val out dx,al endm io8259_std_init macro base,icw1_val,icw2_val,icw3_val,icw4_val mov dx,base mov al,icw1_val out dx,al mov dx,base+2 mov al,icw2_val out dx,al mov al,icw3_val out dx,al mov al,icw4_val out dx,al endm setup_int macro int_irq,int_cs,int_ip push di push ds mov di,0 mov ds,di mov di,(int_irq)*4 mov word ptr ds:[di],int_ip mov word ptr ds:[di+2],int_cs pop ds pop di endm setup_ints macro int_irq,int_cs,int_ip setup_int int_irq,int_cs,int_ip setup_int (int_irq+1),int_cs,int_ip setup_int (int_irq+2),int_cs,int_ip setup_int (int_irq+3),int_cs,int_ip setup_int (int_irq+4),int_cs,int_ip setup_int (int_irq+5),int_cs,int_ip setup_int (int_irq+6),int_cs,int_ip setup_int (int_irq+7),int_cs,int_ip endm intxx proc far iret intxx endp intl1 proc far iret intl1 endp intl2 proc far iret intl2 endp intl1_s proc far iret intl1_s endp intl2_s proc far iret intl2_s endp .startup cli setup_ints 00h,seg intxx,offset intxx setup_ints 08h,seg intxx,offset intxx setup_ints 10h,seg intxx,offset intxx setup_ints 18h,seg intxx,offset intxx setup_int 30h,seg intl1,offset intl1 setup_int 31h,seg intl2,offset intl2 setup_int 40h,seg intl1_s,offset intl1_s setup_int 41h,seg intl2_s,offset intl2_s main: io8259_std_init io8259_main_addr,\ 11h,30h,04h,13h ;io8259_std1_init io8259_main_addr,\ ;13h,30h,03h slave: io8259_std_init io8259_sub_addr,\ 11h,40h,02h,03h sti jmp $ .data .stack END
编译链接选项[masm]
ml /c /Zd /Zi sample.asm
link16 /CODEVIEW sample.obj,sample.exe,,,nul.def
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