我如何在 TASM 中解决 "Assuming data segment is 32-bit"

Question

我下面有这个程序，它使用 DOSBox 计数为 100。它与 .286 完美配合，但我想知道我怎样才能使它与 .386 配合使用。

.286
.model small
setCurPos macro x,y
    pusha
    mov ah, 02h
    mov bh, 0
    mov dl, x
    mov dh, y
    int 10h
    popa    
endm

writeChar macro char,color,ctr
    pusha 
    mov ah, 9
    mov al, char
    mov bh, 0
    mov bl, color
    mov cx, ctr
    int 10h
    popa
endm

delay macro
    mov cx, 0fh
    mov dx,4240h
    mov ah,86h
    int 15h
endm

.stack 100h
.data 
percentage db 0
ones       db ?
tens       db ?
.code
org 100
main proc far
    mov ax, @data
    mov ds, ax
    mov es, ax

    mov ah, 0
    mov al, 13h
    mov bh, 0
    int 10h

    jmp count

    to_printHundred:
    jmp printHundred

    count:
    delay
    cmp percentage, 64h
    je  to_printHundred
    cmp percentage, 0ah
    jae printTens

    ;printOnes
    mov al, percentage
    add al, 30h
    mov ones, al
    setCurPos 10, 10
    writeChar ones, 0fh, 1
    inc percentage
    jmp count

    printTens:
    xor ax, ax
    mov bx, 0ah
    mov al, percentage
    div bl
    add al, 30h
    add ah, 30h
    mov tens, al
    mov ones, ah
    setCurPos 10,10
    writeChar tens,0fh,1
    setCurPos 11,10
    writeChar ones,0fh,1
    inc percentage
    jmp count

    printHundred:
    mov tens, 31h
    mov ones, 30h
    setCurPos 10,10
    writeChar tens,0fh,1
    setCurPos 11,10
    writeChar ones,0fh,2

    mov ah, 4ch
    int 21h
endp
end main

每当我使用 delay.It 时它就会冻结并输出 Illegal read/write 当程序非常大时不得不一直为条件跳转创建中继。

Answer 1

It freezes up and outputs Illegal read/write whenever I use the delay. It sucks having to create relays all the time for conditional jumps when the program is really big.

这是 DOSBox 的一个问题，它在 int 15h AH=86h 函数上出错。
我通过编写一个基于 BIOS 计时器滴答的延迟机制来解决这个问题。您可以在 a-low-tech-approach-to-measuring-game-speed

中找到所有详细信息

我的第 1 段符合您的问题描述：

Whilst developing a game I needed a delay routine capable of doing delays ranging from 0.5 sec to just a few msec. The obvious choice was to use the BIOS delay function 86h on int 15h. In a true real address mode environment it works correctly but I saw that an emulator like DOSBox messes up things. Tons of illegal reads and writes. So I had to come up with another solution.

如果您担心程序大小，那么您可能希望将这些宏更改为子例程。每次调用宏时，它的所有代码都会插入到程序中，而子例程只需编码一次并仅通过 call 指令调用多次。

.code
org 100
main proc far
    mov ax, @data
    mov ds, ax
    mov es, ax

您确定您的 .model small 程序需要这个 org 100 指令吗？

如果像一样，您已更改为 .model tiny，则 ORG 宁愿必须是 org 256。

我如何在 TASM 中解决 "Assuming data segment is 32-bit"

How do I solve "Assuming data segment is 32-bit" in TASM

assembly

x86-16

tasm