Assembly Language for Beginners

(nextflipdebug2) #1

8.5. DONGLES


seg030:0046 57 push di
seg030:0047 8B 16 82 E7 mov dx, _in_port_1 ; 0x37A
seg030:004B EC in al, dx
seg030:004C 8A D8 mov bl, al
seg030:004E 80 E3 FE and bl, 0FEh
seg030:0051 80 CB 04 or bl, 4
seg030:0054 8A C3 mov al, bl
seg030:0056 88 46 FD mov [bp+var_3], al
seg030:0059 80 E3 1F and bl, 1Fh
seg030:005C 8A C3 mov al, bl
seg030:005E EE out dx, al
seg030:005F 68 FF 00 push 0FFh
seg030:0062 0E push cs
seg030:0063 E8 CE FF call near ptr out_port
seg030:0066 59 pop cx
seg030:0067 68 D3 00 push 0D3h
seg030:006A 0E push cs
seg030:006B E8 C6 FF call near ptr out_port
seg030:006E 59 pop cx
seg030:006F 33 F6 xor si, si
seg030:0071 EB 01 jmp short loc_359D4
seg030:0073
seg030:0073 loc_359D3: ; CODE XREF: sent_pro+37j
seg030:0073 46 inc si
seg030:0074
seg030:0074 loc_359D4: ; CODE XREF: sent_pro+30j
seg030:0074 81 FE 96 00 cmp si, 96h
seg030:0078 7C F9 jl short loc_359D3
seg030:007A 68 C3 00 push 0C3h
seg030:007D 0E push cs
seg030:007E E8 B3 FF call near ptr out_port
seg030:0081 59 pop cx
seg030:0082 68 C7 00 push 0C7h
seg030:0085 0E push cs
seg030:0086 E8 AB FF call near ptr out_port
seg030:0089 59 pop cx
seg030:008A 68 D3 00 push 0D3h
seg030:008D 0E push cs
seg030:008E E8 A3 FF call near ptr out_port
seg030:0091 59 pop cx
seg030:0092 68 C3 00 push 0C3h
seg030:0095 0E push cs
seg030:0096 E8 9B FF call near ptr out_port
seg030:0099 59 pop cx
seg030:009A 68 C7 00 push 0C7h
seg030:009D 0E push cs
seg030:009E E8 93 FF call near ptr out_port
seg030:00A1 59 pop cx
seg030:00A2 68 D3 00 push 0D3h
seg030:00A5 0E push cs
seg030:00A6 E8 8B FF call near ptr out_port
seg030:00A9 59 pop cx
seg030:00AA BF FF FF mov di, 0FFFFh
seg030:00AD EB 40 jmp short loc_35A4F
seg030:00AF
seg030:00AF loc_35A0F: ; CODE XREF: sent_pro+BDj
seg030:00AF BE 04 00 mov si, 4
seg030:00B2
seg030:00B2 loc_35A12: ; CODE XREF: sent_pro+ACj
seg030:00B2 D1 E7 shl di, 1
seg030:00B4 8B 16 80 E7 mov dx, _in_port_2 ; 0x379
seg030:00B8 EC in al, dx
seg030:00B9 A8 80 test al, 80h
seg030:00BB 75 03 jnz short loc_35A20
seg030:00BD 83 CF 01 or di, 1
seg030:00C0
seg030:00C0 loc_35A20: ; CODE XREF: sent_pro+7Aj
seg030:00C0 F7 46 FE 08+ test [bp+var_2], 8
seg030:00C5 74 05 jz short loc_35A2C
seg030:00C7 68 D7 00 push 0D7h ; '+'

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