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ndumitrach |
Microsoft (R) Macro Assembler Version 6.14.8444 03/12/12 12:53:08
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a.asm Page 1 - 1
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.186
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.model tiny
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0000 .code
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0000 zero:
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org 24h
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0024 srecv label near
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org 100h
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0100 start:
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0100 33 C0 xor ax,ax
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0102 8E C0 mov es,ax
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0104 26: C7 06 0040 mov word ptr es:[10h*4], offset int10
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0189 R
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010B 26: 8C 0E 0042 mov es:[10h*4+2], cs
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0110 26: C7 06 0044 mov word ptr es:[11h*4], offset int11
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018F R
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0117 26: 8C 0E 0046 mov es:[11h*4+2], cs
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011C B8 0001 mov ax,1
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011F 8C C8 mov ax,cs
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0121 8E C0 mov es,ax
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0123 newline:
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0123 BF 0179 R mov di, offset buf
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0126 B9 000F mov cx, 15
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0129 newchar:
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0129 CD 10 int 10h
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012B 8A C4 mov al,ah
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012D AA stosb
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012E CD 11 int 11h
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0130 3C 08 cmp al,8
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0132 75 0C jne nobs
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0134 83 EF 02 sub di,2
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0137 81 FF 0179 R cmp di,offset buf
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013B 73 03 jae nobs
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013D BF 0179 R mov di,offset buf
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0140 nobs:
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0140 3C 0D cmp al,13
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0142 74 07 jz nc1
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0144 E2 E3 loop newchar
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0146 B0 0D mov al,13
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0148 AA stosb
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0149 CD 11 int 11h
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014B nc1:
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014B C6 45 FF 00 mov byte ptr [di-1], 0
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014F BE 0179 R mov si,offset buf
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0152 80 3C 64 cmp byte ptr [si],'d'
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0155 75 15 jne nodump
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0157 B9 0008 mov cx,8
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015A 33 F6 xor si,si
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015C dl1:
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015C BA 0010 mov dx,16
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015F 51 push cx
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0160 E8 0074 call dumpline
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0163 B0 0D mov al,13
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0165 CD 11 int 11h
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0167 59 pop cx
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0168 E2 F2 loop dl1
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016A EB 07 jmp cr
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016C nodump:
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016C E8 0036 call prtstr
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016F B0 3F mov al, '?'
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0171 CD 11 int 11h
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0173 cr:
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0173 B0 0D mov al,13
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0175 CD 11 int 11h
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0177 EB AA jmp newline
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0179 0010 [ buf db 16 dup(0)
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00
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]
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;--------------------------------- receive char INT10 -----------------------------------
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0189 int10: ; get RS232 char in ah
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0189 51 push cx
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018A E8 FE97 call srecv
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018D 59 pop cx
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018E CF iret
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;--------------------------------- send char INT11 -----------------------------------
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018F int11: ; write RS232 char from al
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018F 50 push ax
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0190 51 push cx
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0191 E6 00 out 0,al
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0193 B4 01 mov ah,1
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0195 03 C0 add ax,ax
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0197 int111:
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0197 E6 01 out 1,al
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0199 B9 00AD mov cx,0adh;8bh;90h
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019C even
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019C E2 FE loop $
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019E D1 E8 shr ax,1
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01A0 75 F5 jnz int111
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01A2 59 pop cx
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01A3 58 pop ax
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01A4 CF iret
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;--------------------------------- print string at SI -----------------------------------
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01A5 prtstr:
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01A5 AC lodsb
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01A6 84 C0 test al,al
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01A8 74 04 jz prtstr1
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01AA CD 11 int 11h
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01AC EB F7 jmp prtstr
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01AE prtstr1:
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01AE C3 ret
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;--------------------------------- print 4 digit hex number in ax -------------------------------
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01AF prthex4:
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01AF 86 E0 xchg ah,al
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01B1 E8 0002 call prthex2
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01B4 8A C4 mov al,ah
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;--------------------------------- print 2 digit hex number in al -------------------------------
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01B6 prthex2:
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01B6 BB 01C7 R mov bx, offset hexdigit
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01B9 50 push ax
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01BA C0 E8 04 shr al,4
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01BD D7 xlat
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01BE CD 11 int 11h
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01C0 58 pop ax
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01C1 24 0F and al,15
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01C3 D7 xlat
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01C4 CD 11 int 11h
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01C6 C3 ret
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01C7 30 31 32 33 34 35 hexdigit db "0123456789ABCDEF"
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36 37 38 39 41 42
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43 44 45 46
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;-------------------------------- dump DX bytes memory at DS:SI -------------------------------
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01D7 dumpline:
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01D7 8C D8 mov ax,ds
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01D9 E8 FFD3 call prthex4
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01DC B0 3A mov al, ':'
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01DE CD 11 int 11h
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01E0 8B C6 mov ax,si
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01E2 E8 FFCA call prthex4
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01E5 8B CA mov cx,dx
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01E7 B0 20 mov al,' '
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01E9 CD 11 int 11h
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01EB dump1:
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01EB B0 20 mov al, ' '
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01ED CD 11 int 11h
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01EF AC lodsb
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01F0 E8 FFC3 call prthex2
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01F3 E2 F6 loop dump1
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01F5 8B CA mov cx,dx
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01F7 2B F2 sub si,dx
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01F9 B0 20 mov al,' '
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01FB CD 11 int 11h
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01FD CD 11 int 11h
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01FF dump2:
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01FF AC lodsb
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0200 2C 20 sub al,32
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0202 3C 60 cmp al,128-32
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0204 72 02 jb dump3
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0206 B0 0E mov al,'.'-32
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0208 04 20 dump3: add al,32
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020A CD 11 int 11h
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020C E2 F1 loop dump2
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020E C3 ret
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end start
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Microsoft (R) Macro Assembler Version 6.14.8444 03/12/12 12:53:08
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a.asm Symbols 2 - 1
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Segments and Groups:
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N a m e Size Length Align Combine Class
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DGROUP . . . . . . . . . . . . . GROUP
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_TEXT . . . . . . . . . . . . . 16 Bit 020F Word Public 'CODE'
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_DATA . . . . . . . . . . . . . 16 Bit 0000 Word Public 'DATA'
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Symbols:
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N a m e Type Value Attr
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@CodeSize . . . . . . . . . . . Number 0000h
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@DataSize . . . . . . . . . . . Number 0000h
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@Interface . . . . . . . . . . . Number 0000h
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@Model . . . . . . . . . . . . . Number 0001h
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@code . . . . . . . . . . . . . Text DGROUP
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@data . . . . . . . . . . . . . Text DGROUP
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@fardata? . . . . . . . . . . . Text FAR_BSS
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@fardata . . . . . . . . . . . . Text FAR_DATA
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@stack . . . . . . . . . . . . . Text DGROUP
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buf . . . . . . . . . . . . . . Byte 0179 _TEXT
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cr . . . . . . . . . . . . . . . L Near 0173 _TEXT
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dl1 . . . . . . . . . . . . . . L Near 015C _TEXT
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dump1 . . . . . . . . . . . . . L Near 01EB _TEXT
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dump2 . . . . . . . . . . . . . L Near 01FF _TEXT
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dump3 . . . . . . . . . . . . . L Near 0208 _TEXT
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dumpline . . . . . . . . . . . . L Near 01D7 _TEXT
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hexdigit . . . . . . . . . . . . Byte 01C7 _TEXT
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int10 . . . . . . . . . . . . . L Near 0189 _TEXT
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int111 . . . . . . . . . . . . . L Near 0197 _TEXT
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int11 . . . . . . . . . . . . . L Near 018F _TEXT
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nc1 . . . . . . . . . . . . . . L Near 014B _TEXT
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newchar . . . . . . . . . . . . L Near 0129 _TEXT
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newline . . . . . . . . . . . . L Near 0123 _TEXT
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nobs . . . . . . . . . . . . . . L Near 0140 _TEXT
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nodump . . . . . . . . . . . . . L Near 016C _TEXT
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prthex2 . . . . . . . . . . . . L Near 01B6 _TEXT
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prthex4 . . . . . . . . . . . . L Near 01AF _TEXT
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prtstr1 . . . . . . . . . . . . L Near 01AE _TEXT
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prtstr . . . . . . . . . . . . . L Near 01A5 _TEXT
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srecv . . . . . . . . . . . . . L Near 0024 _TEXT
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start . . . . . . . . . . . . . L Near 0100 _TEXT
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zero . . . . . . . . . . . . . . L Near 0000 _TEXT
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