89 lines
2.5 KiB
Text
89 lines
2.5 KiB
Text
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Turbo Assembler Version 4.1 05/16/96 16:56:10 Page 1
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kbfunc.asm
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1 ideal
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2 p386
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3 00000000 model flat,c
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4
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5 extrn scode:byte
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6
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7 global kisr:near
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8
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9
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10 00000000 SEGMENT kbdriver USE32
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11
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12
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13
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14 00000000 proc kisr near
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15 00000000 60 pushad
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16 00000001 06 push es
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17
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18 00000002 66| B8 0000s mov ax, DGROUP
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19 00000006 8E C0 mov es, ax
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20 00000008 BB 00000000e mov ebx, offset scode
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21
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22 0000000D E4 60 in al,60h
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23 0000000F 3C 7F cmp al,7fh
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24 00000011 77 05 ja kb_release
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25 00000013 26: 88 03 mov [es:ebx], al
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26 00000016 EB 04 jmp xit_kisr
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27 00000018 kb_release:
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28 00000018 26: C6 03 00 mov [byte es:ebx], 0
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29
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30 0000001C xit_kisr:
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31 0000001C E4 61 in al, 61h ;read in 8255 port PB
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32 0000001E 0C 80 or al, 80h ;set keybrd acknowledge
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33 00000020 E6 61 out 61h, al ;send it
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34 00000022 24 7F and al, 7fh ;reset it
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35 00000024 E6 61 out 61h, al ;restore original condition
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36
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37 00000026 66| BA 0020 mov dx, 20h
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38 0000002A 8A C2 mov al, dl ;end the interrput
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39 0000002C EE out dx, al
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40
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41 0000002D 07 pop es
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42 0000002E 61 popad
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43 0000002F CF iretd
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44 00000030 endp
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45
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46 00000030 ends kbdriver
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47 end
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Turbo Assembler Version 4.1 05/16/96 16:56:10 Page 2
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Symbol Table
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Symbol Name Type Value
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??date Text "05/16/96"
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??filename Text "kbfunc "
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??time Text "16:56:10"
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??version Number 040A
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@32Bit Text 1
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@CodeSize Text 0
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@Cpu Text 0F8FH
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@DataSize Text 0
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@FileName Text kbfunc
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@Interface Text 01h
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@Model Text 1
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@WordSize Text 4
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@code Text FLAT
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@curseg Text kbdriver
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@data Text FLAT
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@stack Text FLAT
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kb_release Near FLAT:0018
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kisr (_kisr) Near FLAT:0000
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scode (_scode) Byte ----:---- Extern
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xit_kisr Near FLAT:001C
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Groups & Segments Bit Size Align Combine Class
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DGROUP Group
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_DATA 32 0000 Dword Public DATA
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FLAT Group
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_TEXT 32 0000 Dword Public CODE
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kbdriver 32 0030 Para none
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