DOS ain't dead

test code line width (Sandbox)

posted by ecm  , Düsseldorf, Germany, 17.10.2025, 10:30



lDebug connected to serial port. Enter KEEP to confirm.
= keep
^a
2D6A:0100 mov ah, 80
          B480
2D6A:0102 int 21
          CD21
2D6A:0104 nop
          90
2D6A:0105 int3
          CC
2D6A:0106 nop
          90
2D6A:0107
^r
AX=0000 BX=0000 CX=0000 DX=0000 SP=FFFE BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=2D6A IP=0100 NV UP EI PL ZR NA PE NC
2D6A:0100 B480              mov     ah, 80
^tm 1
trace mode is 1 - interrupts are traced
^install indos
^r
AX=0000 BX=0000 CX=0000 DX=0000 SP=FFFE BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=2D6A IP=0100 NV UP EI PL ZR NA PE NC
2D6A:0100 B480              mov     ah, 80
^t
AX=8000 BX=0000 CX=0000 DX=0000 SP=FFFE BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=2D6A IP=0102 NV UP EI PL ZR NA PE NC
2D6A:0102 CD21              int     21
^
AX=8000 BX=0000 CX=0000 DX=0000 SP=FFF8 BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=00C9 IP=0FB2 NV UP DI PL ZR NA PE NC
00C9:0FB2 90                nop
^
AX=8000 BX=0000 CX=0000 DX=0000 SP=FFF8 BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=00C9 IP=0FB3 NV UP DI PL ZR NA PE NC
00C9:0FB3 90                nop
^
AX=8000 BX=0000 CX=0000 DX=0000 SP=FFF8 BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=00C9 IP=0FB4 NV UP DI PL ZR NA PE NC
00C9:0FB4 E8D100            call    1088
^p
AX=8000 BX=0000 CX=0000 DX=0000 SP=FFF8 BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=00C9 IP=0FB7 NV UP DI PL ZR NA PE NC
00C9:0FB7 2EFF2E820F        jmp     far [cs:0F82]             CS:0F82=FF03:41E7
^t
AX=8000 BX=0000 CX=0000 DX=0000 SP=FFF8 BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=FF03 IP=41E7 NV UP DI PL ZR NA PE NC
FF03:41E7 FA                cli
^
AX=8000 BX=0000 CX=0000 DX=0000 SP=FFF8 BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=FF03 IP=41E8 NV UP DI PL ZR NA PE NC
FF03:41E8 80FC73            cmp     ah, 73
^
AX=8000 BX=0000 CX=0000 DX=0000 SP=FFF8 BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=FF03 IP=41EB OV UP DI PL NZ AC PO NC
FF03:41EB 77D2              ja      41BF                                jumping
^t
AX=8000 BX=0000 CX=0000 DX=0000 SP=FFF8 BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=FF03 IP=41BF OV UP DI PL NZ AC PO NC
FF03:41BF 32C0              xor     al, al
^
AX=8000 BX=0000 CX=0000 DX=0000 SP=FFF8 BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=FF03 IP=41C1 NV UP DI PL ZR NA PE NC
FF03:41C1 CF                iret
^
AX=8000 BX=0000 CX=0000 DX=0000 SP=FFFE BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=2D6A IP=0104 NV UP EI PL ZR NA PE NC
2D6A:0104 90                nop
^a
2D6A:0107 mov ax, 3306
          B80633
2D6A:010A int 21
          CD21
2D6A:010C nop
          90
2D6A:010D int3
          CC
2D6A:010E
^tm 0
trace mode is 0 - interrupts are processed
^t
AX=8000 BX=0000 CX=0000 DX=0000 SP=FFFE BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=2D6A IP=0105 NV UP EI PL ZR NA PE NC
2D6A:0105 CC                int3
^
Unexpected breakpoint interrupt
AX=8000 BX=0000 CX=0000 DX=0000 SP=FFFE BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=2D6A IP=0106 NV UP EI PL ZR NA PE NC
2D6A:0106 90                nop
^
AX=8000 BX=0000 CX=0000 DX=0000 SP=FFFE BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=2D6A IP=0107 NV UP EI PL ZR NA PE NC
2D6A:0107 B80633            mov     ax, 3306
^
AX=3306 BX=0000 CX=0000 DX=0000 SP=FFFE BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=2D6A IP=010A NV UP EI PL ZR NA PE NC
2D6A:010A CD21              int     21
^
AX=3306 BX=0007 CX=0000 DX=1000 SP=FFFE BP=0000 SI=0000 DI=0000
DS=2D6A ES=2D6A SS=2D6A CS=2D6A IP=010C NV UP EI PL ZR NA PE NC
2D6A:010C 90                nop
^


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l

Complete thread:

• test code line width - ecm, 17.10.2025, 10:30
  • test code line width - ecm, 17.10.2025, 10:39