7765 - baremetal: ctrl keys
This commit is contained in:
Kartik K. Agaram
parent
b21f1787a0
commit
954fc11c18
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@ -320,7 +320,7 @@ e9 fd ff # loop forever
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# check output buffer of 8042 keyboard controller (https://web.archive.org/web/20040604041507/http://panda.cs.ndsu.nodak.edu/~achapwes/PICmicro/keyboard/atkeyboard.html)
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e4 64 # al <- port 0x64
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a8 01 # set zf if bit 0 (least significant) is not set
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74 89 # jump to epilogue if 0 bit is not set [label]
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74 bb # jump to epilogue if 0 bit is not set [label]
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# 21e:
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# - if keyboard buffer is full, return
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31 c9 # ecx <- xor ecx; 11/direct 001/r32/ecx 001/rm32/ecx
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@ -334,7 +334,7 @@ e9 fd ff # loop forever
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30 80 00 00 # disp32 [label]
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# if (al != 0) return
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3c 00 # compare al, 0
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75 77 # jump to epilogue if != [label]
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75 a9 # jump to epilogue if != [label]
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# 230:
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# - read keycode
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e4 60 # al <- port 0x60
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@ -357,61 +357,97 @@ e9 fd ff # loop forever
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05 # 00/mod/indirect 000/subop/copy 101/rm32/use-disp32
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10 80 00 00 # disp32 [label]
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00 00 00 00 # imm32
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# 24e:
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# $2:
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# if (al == 0x9d) ctrl = false # ctrl is being lifted
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3c 9d # compare al, 0x9d
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75 0a # jump to $3 if != [label]
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# *ctrl = 0
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c7 # copy imm32 to rm32
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05 # 00/mod/indirect 000/subop/copy 101/rm32/use-disp32
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14 80 00 00 # disp32 [label]
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00 00 00 00 # imm32
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# 25c:
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# $3:
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# if (al & 0x80) a key is being lifted; return
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50 # push eax
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24 80 # al <- and 0x80
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3c 00 # compare al, 0
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58 # pop to eax (without touching flags)
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75 51 # jump to epilogue if != [label]
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# 256:
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75 75 # jump to epilogue if != [label]
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# 264:
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# - key pressed
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# if (al == 0x2a) shift = true, return # left shift pressed
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3c 2a # compare al, 0x2a
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75 0c # jump to $3 if != [label]
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# *shift = 1
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c7 # copy imm32 to rm32
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05 # 00/mod/indirect 000/subop/copy 101/rm32/use-disp32
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10 80 00 00 # disp32 [label]
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01 00 00 00 # imm32
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eb 41 # jump to epilogue [label]
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# 266:
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# $3:
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# if (al == 0x36) shift = true, return # right shift pressed
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3c 36 # compare al, 0x36
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75 0c # jump to $4 if != [label]
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# *shift = 1
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c7 # copy imm32 to rm32
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05 # 00/mod/indirect 000/subop/copy 101/rm32/use-disp32
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10 80 00 00 # disp32 [label]
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01 00 00 00 # imm32
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eb 31 # jump to epilogue [label]
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# 276:
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eb 65 # jump to epilogue [label]
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# 274:
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# $4:
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# if (al == 0x36) shift = true, return # right shift pressed
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3c 36 # compare al, 0x36
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75 0c # jump to $5 if != [label]
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# *shift = 1
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c7 # copy imm32 to rm32
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05 # 00/mod/indirect 000/subop/copy 101/rm32/use-disp32
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10 80 00 00 # disp32 [label]
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01 00 00 00 # imm32
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eb 55 # jump to epilogue [label]
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# 284:
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# $5:
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# if (al == 0x1d) ctrl = true, return
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3c 1d # compare al, 0x36
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75 0c # jump to $6 if != [label]
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# *shift = 1
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c7 # copy imm32 to rm32
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05 # 00/mod/indirect 000/subop/copy 101/rm32/use-disp32
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14 80 00 00 # disp32 [label]
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01 00 00 00 # imm32
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eb 45 # jump to epilogue [label]
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# 294:
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# $6:
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# - convert key to character
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# if (shift) use keyboard shift map
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81 # operate on rm32 and imm32
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3d # 00/mod/indirect 111/subop/compare 101/rm32/use-disp32
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10 80 00 00 # disp32 = shift [label]
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00 00 00 00 # imm32
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74 08 # jump to $5 if = [label]
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74 08 # jump to $7 if = [label]
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# al <- *(keyboard shift map + eax)
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8a # copy m8 at rm32 to r8
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80 # 10/mod/*+disp32 000/r8/al 000/rm32/eax
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00 87 00 00 # disp32 [label]
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eb 06 # jump to $6 [label]
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# 28a:
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# $5:
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eb 1a # jump to $8 [label]
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# 2a8:
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# $7:
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# if (ctrl) use keyboard ctrl map
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81 # operate on rm32 and imm32
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3d # 00/mod/indirect 111/subop/compare 101/rm32/use-disp32
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14 80 00 00 # disp32 = ctrl [label]
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00 00 00 00 # imm32
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74 08 # jump to $8 if = [label]
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# al <- *(keyboard ctrl map + eax)
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8a # copy m8 at rm32 to r8
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80 # 10/mod/*+disp32 000/r8/al 000/rm32/eax
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00 88 00 00 # disp32 [label]
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eb 06 # jump to $9 [label]
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# 2bc:
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# $8:
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# otherwise use keyboard normal map
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# al <- *(keyboard normal map + eax)
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8a # copy m8 at rm32 to r8
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80 # 10/mod/*+disp32 000/r8/al 000/rm32/eax
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00 86 00 00 # disp32 [label]
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# $6:
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# 2c2:
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# $9:
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# - if there's no character mapping, return
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3c 00 # compare al, 0
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74 13 # jump to epilogue if = [label]
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# 294:
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# 2c6:
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# - store al in keyboard buffer
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88 # copy r8 to m8 at r32
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81 # 10/mod/*+disp32 000/r8/al 001/rm32/ecx
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@ -425,18 +461,15 @@ e9 fd ff # loop forever
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25 # 00/mod/indirect 100/subop/and 101/rm32/use-disp32
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28 80 00 00 # disp32 [label]
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0f # imm8
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# 2a7:
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# 2d9:
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# epilogue
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61 # pop all registers
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fb # enable interrupts
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cf # iret
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# padding
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# 2aa:
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00 00 00 00 00 00
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00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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# 2dc:
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00 00 00 00
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00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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# 300:
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@ -470,9 +503,13 @@ e9 fd ff # loop forever
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# var shift: boolean
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00 00 00 00
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# padding
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# 414:
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00 00 00 00 00 00 00 00 00 00 00 00
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# var ctrl: boolean
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00 00 00 00
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# padding
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# 418:
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00 00 00 00 00 00 00 00
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00 00 00 00 00 00 00 00
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# 428:
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@ -735,7 +772,7 @@ e9 fd ff # loop forever
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# tab q w e r t y u i o p [ ]
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09 71 77 65 72 74 79 75 69 6f 70 5b 5d
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# 1c
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# enter
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# enter (newline)
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0a 00
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# 1e
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# a s d f g h j k l ; ' ` \
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@ -774,9 +811,9 @@ e9 fd ff # loop forever
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21 40 23 24 25 53 26 2a 28 29 5f 2b 08
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# 0f
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# tab Q W E R T Y U I O P { }
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09 51 57 55 52 54 59 55 59 5f 50 7b 7d
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09 51 57 45 52 54 59 55 49 5f 50 7b 7d
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# 1c
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# enter
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# enter (newline)
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0a 00
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# 1e
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# A S D F G H J K L : " ~ |
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@ -807,9 +844,20 @@ e9 fd ff # loop forever
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# c00:
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# keyboard ctrl map:
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00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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# 10
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# ^q ^w ^e ^r ^t ^y ^u tb ^o ^p
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11 17 05 12 14 19 15 09 1f 10 00 00
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# 1c
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# carriage-return
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0d 00
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# 1e
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# ^a ^s ^d ^f ^g ^h ^j ^j ^l ^\
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01 13 04 06 07 08 0a 0b 0c 00 00 00 00 1c
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# 2c
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# ^z ^x ^c ^v ^b ^n ^m ^/
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1a 18 03 16 02 0e 0d 00 00 1f 00 00
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# 38
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00 00 00 00 00 00 00 00
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00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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