assembly - 如何增加 assembly 图形中的文字大小？

Question

这是我的代码。

.model small
.stack
.data

.code

;setting video mode
mov ah,0
mov al,12h
int 10h


;setting cursor position
mov ah,02h  
mov dh,10    ;row 
mov dl,40     ;column
int 10h

mov ah,09h
mov bl,0eh   ;colour
mov cx,1      ;no.of times
mov al,'B'      ;print B
int 10h   

 mov ah,4ch
int 21h

end

给定代码的输出是

如您在视频模式为 12h 时在显示屏上看到的字符大小。我想知道增加字符大小的功能代码和参数是什么。

Answer 1

角色的大小由视频模式决定。来自 http://lateblt.tripod.com/bit24.txt :

00: 40x25 Black and White text (CGA,EGA,MCGA,VGA)
01: 40x25 16 color text (CGA,EGA,MCGA,VGA)
02: 80x25 16 shades of gray text (CGA,EGA,MCGA,VGA)
03: 80x25 16 color text (CGA,EGA,MCGA,VGA)
04: 320x200 4 color graphics (CGA,EGA,MCGA,VGA)
05: 320x200 4 color graphics (CGA,EGA,MCGA,VGA)
06: 640x200 B/W graphics (CGA,EGA,MCGA,VGA)
07: 80x25 Monochrome text (MDA,HERC,EGA,VGA)
08: 160x200 16 color graphics (PCjr)
09: 320x200 16 color graphics (PCjr)
0A: 640x200 4 color graphics (PCjr)
0D: 320x200 16 color graphics (EGA,VGA)
0E: 640x200 16 color graphics (EGA,VGA)
0F: 640x350 Monochrome graphics (EGA,VGA)
10: 640x350 16 color graphics (EGA or VGA with 128K)
    640x350 4 color graphics (64K EGA)
11: 640x480 B/W graphics (MCGA,VGA)
12: 640x480 16 color graphics (VGA)
13: 320x200 256 color graphics (MCGA,VGA)