728 lines
29 KiB
Plaintext
728 lines
29 KiB
Plaintext
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''*******************************
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''* PS/2 Keyboard Driver v2.0 *
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''* (C) 2004 Parallax, Inc. *
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''* Modified by Michael Green *
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''* to support Hydra as well *
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''*******************************
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{
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Modified by Michael Park for Sphinx
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2009/06/15
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}
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SXKBRENDEZVOUS = $7ff8
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VAR
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long cog
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PUB start(pingroup) : okay
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'' Start keyboard driver - starts a cog
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'' returns false if no cog available
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''
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'' pingroup = 1st pin number for 2-pin group for PS/2 I/O
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'' (1st - data signal, 2nd - clock signal)
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'' Even number selects Demo Board I/O convention
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''
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'' use 100-ohm resistors between pins and jack
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'' use 10K-ohm resistors to pull jack-side signals to VDD
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'' connect jack-power to 5V, jack-gnd to VSS
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''
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'' pingroup = 1st pin number for 4-pin group for PS/2 I/O
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'' Odd number selects Hydra I/O convention
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''
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'' 1st pin drives NPN base for PS/2 'data' signal pull-down
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'' 2nd pin reads PS/2 'data' signal
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'' 3rd pin drives NPN base for PS/2 'clock' signal pull-down
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'' 4th pin reads PS/2 'clock' signal
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''
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'' use 2.2K-ohm resistors between 1st/3rd pins and NPN bases
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'' use 22K-ohm resistors between 2nd/4th pins and PS/2-side signals
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'' use 2.2K-ohm resistors to pull PS/2-side signals to 5V
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'' connect PS/2 power to 5V, PS/2 gnd to vss
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''
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'' all lock-keys will be enabled, NumLock will be initially 'on',
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'' and auto-repeat will be set to 15cps with a delay of .5s
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okay := startx(pingroup, %0_000_100, %01_01000)
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PUB startx(pingroup, locks, auto) | okay
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'' Like start, but allows you to specify lock settings and auto-repeat
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''
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'' locks = lock setup
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'' bit 6 disallows shift-alphas (case set soley by CapsLock)
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'' bits 5..3 disallow toggle of NumLock/CapsLock/ScrollLock state
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'' bits 2..0 specify initial state of NumLock/CapsLock/ScrollLock
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'' (eg. %0_001_100 = disallow ScrollLock, NumLock initially 'on')
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''
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'' auto = auto-repeat setup
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'' bits 6..5 specify delay (0=.25s, 1=.5s, 2=.75s, 3=1s)
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'' bits 4..0 specify repeat rate (0=30cps..31=2cps)
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'' (eg %01_00000 = .5s delay, 30cps repeat)
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long[pRendezvous]~~ ' ping
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if long[pRendezvous]~ == -1 ' no response
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longmove(@_pingroup, @pingroup, 3)
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okay := cog := cognew(@entry, 0) + 1
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PUB peekkey
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'' Returns a 0 if the buffer is empty
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'' returns next key if buffer not empty
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'' but doesn't remove the key from buffer
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return long[pRendezvous]
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PUB key : keycode
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'' Get key (never waits)
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'' returns key (0 if buffer empty)
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if keycode := long[pRendezvous]
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long[pRendezvous]~
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PUB getkey : keycode
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'' Get next key (may wait for keypress)
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'' returns key
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repeat until (keycode := key)
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DAT
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'******************************************
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'* Assembly language PS/2 keyboard driver *
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'******************************************
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org
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'
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'
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' Entry
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'
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entry
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mov x,_pingroup 'get mask for 1st pin
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andn x,#1
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test _pingroup,#1 wz
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mov dwmask,#1
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shl dwmask,x
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mov drmask,dwmask
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if_nz shl drmask,#1
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mov cwmask,drmask
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shl cwmask,#1
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mov crmask,cwmask
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if_nz shl crmask,#1
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if_nz or dira,dwmask 'set directions
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if_nz or dira,cwmask
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mov _head,#0 'reset output parameter _head
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mov _tail, #0
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'
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'
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' Reset keyboard
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'
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reset test _pingroup,#1 wz
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if_nz andn outa,dwmask 'let PS/2 lines float (pulled up)
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if_nz andn outa,cwmask
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if_z mov dira,#0
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movd :par,#_present 'reset output parameters _present/_states[8]
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mov x,#1+8
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:par mov 0,#0
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add :par,dlsb
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djnz x,#:par
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mov stat,#8 'set reset flag
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'
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'
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' Update parameters
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'
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update
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call #Rendezvous
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test stat,#8 wc 'if reset flag, transmit reset command
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if_c mov data,#$FF
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if_c call #transmit
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'
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'
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' Get scancode
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'
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newcode
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mov stat,#0 'reset state
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:same call #receive 'receive byte from keyboard
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cmp data,#$83+1 wc 'scancode?
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if_nc cmp data,#$AA wz 'powerup/reset?
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if_nc_and_z jmp #configure
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if_nc cmp data,#$E0 wz 'extended?
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if_nc_and_z or stat,#1
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if_nc_and_z jmp #:same
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if_nc cmp data,#$F0 wz 'released?
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if_nc_and_z or stat,#2
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if_nc_and_z jmp #:same
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if_nc jmp #newcode 'unknown, ignore
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'
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'
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' Translate scancode and enter into buffer
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'
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test stat,#1 wc 'lookup code with extended flag
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rcl data,#1
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call #look
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cmp data,#0 wz 'if unknown, ignore
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if_z jmp #newcode
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mov t,_states+6 'remember lock keys in _states
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mov x,data 'set/clear key bit in _states
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shr x,#5
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add x,#_states
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movd :reg,x
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mov y,#1
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shl y,data
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test stat,#2 wc
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:reg muxnc 0,y
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if_nc cmpsub data,#$F0 wc 'if released or shift/ctrl/alt/win, done
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if_c jmp #update
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mov y,_states+7 'get shift/ctrl/alt/win bit pairs
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shr y,#16
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cmpsub data,#$E0 wc 'translate keypad, considering numlock
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if_c test _locks,#%100 wz
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if_c_and_z add data,#@keypad1-@table
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if_c_and_nz add data,#@keypad2-@table
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if_c call #look
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if_c jmp #:flags
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cmpsub data,#$DD wc 'handle scrlock/capslock/numlock
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if_c mov x,#%001_000
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if_c shl x,data
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if_c andn x,_locks
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if_c shr x,#3
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if_c shr t,#29 'ignore auto-repeat
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if_c andn x,t wz
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if_c xor _locks,x
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if_c add data,#$DD
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if_c_and_nz or stat,#4 'if change, set configure flag to update leds
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test y,#%11 wz 'get shift into nz
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if_nz cmp data,#$60+1 wc 'check shift1
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if_nz_and_c cmpsub data,#$5B wc
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if_nz_and_c add data,#@shift1-@table
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if_nz_and_c call #look
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if_nz_and_c andn y,#%11
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if_nz cmp data,#$3D+1 wc 'check shift2
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if_nz_and_c cmpsub data,#$27 wc
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if_nz_and_c add data,#@shift2-@table
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if_nz_and_c call #look
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if_nz_and_c andn y,#%11
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test _locks,#%010 wc 'check shift-alpha, considering capslock
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muxnc :shift,#$20
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test _locks,#$40 wc
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if_nz_and_nc xor :shift,#$20
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cmp data,#"z"+1 wc
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if_c cmpsub data,#"a" wc
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:shift if_c add data,#"A"
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if_c andn y,#%11
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:flags ror data,#8 'add shift/ctrl/alt/win flags
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mov x,#4 '+$100 if shift
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:loop test y,#%11 wz '+$200 if ctrl
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shr y,#2 '+$400 if alt
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if_nz or data,#1 '+$800 if win
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ror data,#1
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djnz x,#:loop
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rol data,#12
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mov x, _tail 'if room in buffer and key valid, enter
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sub x,#1
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and x,#$F
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cmp x,_head wz
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if_e jmp #:z
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test data,#$FF wz
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if_z jmp #:z
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mov x, #buffer
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add x, _head
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movd :store, x
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nop
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:store mov 0-0, data ' buffer[x] := data
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add _head,#1
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and _head,#$F
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:z
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test stat,#4 wc 'if not configure flag, done
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if_nc jmp #update 'else configure to update leds
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'
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'
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' Configure keyboard
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'
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configure mov data,#$F3 'set keyboard auto-repeat
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call #transmit
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mov data,_auto
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and data,#%11_11111
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call #transmit
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mov data,#$ED 'set keyboard lock-leds
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call #transmit
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mov data,_locks
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rev data,#-3 & $1F
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test data,#%100 wc
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rcl data,#1
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and data,#%111
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call #transmit
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mov x,_locks 'insert locks into _states
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and x,#%111
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shl _states+7,#3
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or _states+7,x
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ror _states+7,#3
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mov _present,#1 'set _present
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jmp #update 'done
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'
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'
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' Lookup byte in table
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'
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look ror data,#2 'perform lookup
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movs :reg,data
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add :reg,#table
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shr data,#27
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mov x,data
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:reg mov data,0
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shr data,x
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jmp #rand 'isolate byte
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'
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'
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' Transmit byte to keyboard
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'
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transmit test _pingroup,#1 wz
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if_z or dira,cwmask
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if_nz or outa,cwmask 'pull clock low
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movs napshr,#13 'hold clock for ~128us (must be >100us)
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call #nap
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if_z or dira,dwmask
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if_nz or outa,dwmask 'pull data low
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movs napshr,#18 'hold data for ~4us
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call #nap
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if_z xor dira,cwmask
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if_nz andn outa,cwmask 'release clock
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test data,#$0FF wc 'append parity and stop bits to byte
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muxnc data,#$100
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or data,dlsb
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mov x,#10 'ready 10 bits
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transmit_bit call #wait_c0 'wait until clock low
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shr data,#1 wc 'output data bit
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test _pingroup,#1 wz
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if_z muxnc dira,dwmask
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if_nz muxnc outa,dwmask
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mov wcond,c1 'wait until clock high
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call #wait
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djnz x,#transmit_bit 'another bit?
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mov wcond,c0d0 'wait until clock and data low
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call #wait
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mov wcond,c1d1 'wait until clock and data high
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call #wait
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call #receive_ack 'receive ack byte with timed wait
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cmp data,#$FA wz 'if ack error, reset keyboard
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if_nz jmp #reset
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transmit_ret ret
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'
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'
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' Receive byte from keyboard
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'
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receive
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:waitpne
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call #Rendezvous
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mov x, ina 'wait indefinitely for initial clock low
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and x, crmask
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cmp x, crmask wz
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if_e jmp #:waitpne
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receive_ack mov x,#11 'ready 11 bits
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receive_bit call #wait_c0 'wait until clock low
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movs napshr,#16 'pause ~16us
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call #nap
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test drmask,ina wc 'input data bit
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rcr data,#1
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mov wcond,c1 'wait until clock high
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call #wait
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djnz x,#receive_bit 'another bit?
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shr data,#22 'align byte
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test data,#$1FF wc 'if parity error, reset keyboard
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if_nc jmp #reset
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rand and data,#$FF 'isolate byte
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look_ret
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receive_ack_ret
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receive_ret ret
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'
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'
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' Communicate with the rest of the Propeller via "rendezvous" in hub memory.
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'
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Rendezvous
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rdlong t, pRendezvous wz ' if rendezvous = 0 (location empty),
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if_z jmp #:clearToSend ' go fill it with character in buffer.
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add t, #1 wz ' if rendezvous = -1
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if_nz jmp #Rendezvous_ret ' someone is pinging to see if sxkb cog is alive;
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sub t, #2 ' set rendezvous to -2 to ack.
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wrlong t, pRendezvous
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jmp #Rendezvous_ret
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:clearToSend
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cmp _head, _tail wz
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if_e jmp #Rendezvous_ret
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mov x, _tail
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add x, #buffer
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movs :read, x
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nop
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:read mov data, 0-0 ' data := buffer[_tail]
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wrlong data, pRendezvous
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add _tail, #1
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and _tail, #$0f
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Rendezvous_ret ret
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'
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'
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' Wait for clock/data to be in required state(s)
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'
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wait_c0 mov wcond,c0 '(wait until clock low)
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wait mov y,tenms 'set timeout to 10ms
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wloop movs napshr,#18 'nap ~4us
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call #nap
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test crmask,ina wc 'check required state(s)
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test drmask,ina wz 'loop until got state(s) or timeout
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wcond if_never djnz y,#wloop '(replaced with c0/c1/c0d0/c1d1)
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tjz y,#reset 'if timeout, reset keyboard
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wait_ret
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wait_c0_ret ret
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c0 if_c djnz y,#wloop '(if_never replacements)
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c1 if_nc djnz y,#wloop
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c0d0 if_c_or_nz djnz y,#wloop
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c1d1 if_nc_or_z djnz y,#wloop
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'
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'
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' Nap
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'
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nap rdlong t,#0 'get clkfreq
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napshr shr t,#0-0 'shr scales time (set to 13/16/18)
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min t,#10 'ensure waitcnt won't snag (was 3 but snagged; upped to 10 [mp])
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add t,cnt 'add cnt to time
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waitcnt t,#0 'wait until time elapses (nap)
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nap_ret ret
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'
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'
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' Initialized data
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'
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'
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dlsb long 1 << 9
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tenms long 10_000 / 4
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'
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'
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' Lookup table
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' ascii scan extkey regkey ()=keypad
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'
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table word $0000 '00
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word $00D8 '01 F9
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word $0000 '02
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word $00D4 '03 F5
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word $00D2 '04 F3
|
||
|
word $00D0 '05 F1
|
||
|
word $00D1 '06 F2
|
||
|
word $00DB '07 F12
|
||
|
word $0000 '08
|
||
|
word $00D9 '09 F10
|
||
|
word $00D7 '0A F8
|
||
|
word $00D5 '0B F6
|
||
|
word $00D3 '0C F4
|
||
|
word $0009 '0D Tab
|
||
|
word $0060 '0E `
|
||
|
word $0000 '0F
|
||
|
word $0000 '10
|
||
|
word $F5F4 '11 Alt-R Alt-L
|
||
|
word $00F0 '12 Shift-L
|
||
|
word $0000 '13
|
||
|
word $F3F2 '14 Ctrl-R Ctrl-L
|
||
|
word $0071 '15 q
|
||
|
word $0031 '16 1
|
||
|
word $0000 '17
|
||
|
word $0000 '18
|
||
|
word $0000 '19
|
||
|
word $007A '1A z
|
||
|
word $0073 '1B s
|
||
|
word $0061 '1C a
|
||
|
word $0077 '1D w
|
||
|
word $0032 '1E 2
|
||
|
word $F600 '1F Win-L
|
||
|
word $0000 '20
|
||
|
word $0063 '21 c
|
||
|
word $0078 '22 x
|
||
|
word $0064 '23 d
|
||
|
word $0065 '24 e
|
||
|
word $0034 '25 4
|
||
|
word $0033 '26 3
|
||
|
word $F700 '27 Win-R
|
||
|
word $0000 '28
|
||
|
word $0020 '29 Space
|
||
|
word $0076 '2A v
|
||
|
word $0066 '2B f
|
||
|
word $0074 '2C t
|
||
|
word $0072 '2D r
|
||
|
word $0035 '2E 5
|
||
|
word $CC00 '2F Apps
|
||
|
word $0000 '30
|
||
|
word $006E '31 n
|
||
|
word $0062 '32 b
|
||
|
word $0068 '33 h
|
||
|
word $0067 '34 g
|
||
|
word $0079 '35 y
|
||
|
word $0036 '36 6
|
||
|
word $CD00 '37 Power
|
||
|
word $0000 '38
|
||
|
word $0000 '39
|
||
|
word $006D '3A m
|
||
|
word $006A '3B j
|
||
|
word $0075 '3C u
|
||
|
word $0037 '3D 7
|
||
|
word $0038 '3E 8
|
||
|
word $CE00 '3F Sleep
|
||
|
word $0000 '40
|
||
|
word $002C '41 ,
|
||
|
word $006B '42 k
|
||
|
word $0069 '43 i
|
||
|
word $006F '44 o
|
||
|
word $0030 '45 0
|
||
|
word $0039 '46 9
|
||
|
word $0000 '47
|
||
|
word $0000 '48
|
||
|
word $002E '49 .
|
||
|
word $EF2F '4A (/) /
|
||
|
word $006C '4B l
|
||
|
word $003B '4C ;
|
||
|
word $0070 '4D p
|
||
|
word $002D '4E -
|
||
|
word $0000 '4F
|
||
|
word $0000 '50
|
||
|
word $0000 '51
|
||
|
word $0027 '52 '
|
||
|
word $0000 '53
|
||
|
word $005B '54 [
|
||
|
word $003D '55 =
|
||
|
word $0000 '56
|
||
|
word $0000 '57
|
||
|
word $00DE '58 CapsLock
|
||
|
word $00F1 '59 Shift-R
|
||
|
word $EB0D '5A (Enter) Enter
|
||
|
word $005D '5B ]
|
||
|
word $0000 '5C
|
||
|
word $005C '5D \
|
||
|
word $CF00 '5E WakeUp
|
||
|
word $0000 '5F
|
||
|
word $0000 '60
|
||
|
word $0000 '61
|
||
|
word $0000 '62
|
||
|
word $0000 '63
|
||
|
word $0000 '64
|
||
|
word $0000 '65
|
||
|
word $00C8 '66 BackSpace
|
||
|
word $0000 '67
|
||
|
word $0000 '68
|
||
|
word $C5E1 '69 End (1)
|
||
|
word $0000 '6A
|
||
|
word $C0E4 '6B Left (4)
|
||
|
word $C4E7 '6C Home (7)
|
||
|
word $0000 '6D
|
||
|
word $0000 '6E
|
||
|
word $0000 '6F
|
||
|
word $CAE0 '70 Insert (0)
|
||
|
word $C9EA '71 Delete (.)
|
||
|
word $C3E2 '72 Down (2)
|
||
|
word $00E5 '73 (5)
|
||
|
word $C1E6 '74 Right (6)
|
||
|
word $C2E8 '75 Up (8)
|
||
|
word $00CB '76 Esc
|
||
|
word $00DF '77 NumLock
|
||
|
word $00DA '78 F11
|
||
|
word $00EC '79 (+)
|
||
|
word $C7E3 '7A PageDn (3)
|
||
|
word $00ED '7B (-)
|
||
|
word $DCEE '7C PrScr (*)
|
||
|
word $C6E9 '7D PageUp (9)
|
||
|
word $00DD '7E ScrLock
|
||
|
word $0000 '7F
|
||
|
word $0000 '80
|
||
|
word $0000 '81
|
||
|
word $0000 '82
|
||
|
word $00D6 '83 F7
|
||
|
|
||
|
keypad1 byte $CA, $C5, $C3, $C7, $C0, 0, $C1, $C4, $C2, $C6, $C9, $0D, "+-*/"
|
||
|
|
||
|
keypad2 byte "0123456789.", $0D, "+-*/"
|
||
|
|
||
|
shift1 byte "{|}", 0, 0, "~"
|
||
|
|
||
|
shift2 byte $22, 0, 0, 0, 0, "<_>?)!@#$%^&*(", 0, ":", 0, "+"
|
||
|
|
||
|
_pingroup long 0
|
||
|
_locks long 0
|
||
|
_auto long 0
|
||
|
pRendezvous long SXKBRENDEZVOUS
|
||
|
'
|
||
|
' Uninitialized data
|
||
|
'
|
||
|
buffer res 16
|
||
|
dwmask res 1 'output driver mask for data
|
||
|
drmask res 1 'input mask for data
|
||
|
cwmask res 1 'output driver mask for clock
|
||
|
crmask res 1 'input mask for data
|
||
|
stat res 1
|
||
|
data res 1
|
||
|
x res 1
|
||
|
y res 1
|
||
|
t res 1
|
||
|
|
||
|
_tail res 1
|
||
|
_head res 1 'write-only
|
||
|
_present res 1 'write-only
|
||
|
_states res 8 'write-only
|
||
|
|
||
|
fit
|
||
|
''
|
||
|
''
|
||
|
'' _________
|
||
|
'' Key Codes
|
||
|
''
|
||
|
'' 00..DF = keypress and keystate
|
||
|
'' E0..FF = keystate only
|
||
|
''
|
||
|
''
|
||
|
'' 09 Tab
|
||
|
'' 0D Enter
|
||
|
'' 20 Space
|
||
|
'' 21 !
|
||
|
'' 22 "
|
||
|
'' 23 #
|
||
|
'' 24 $
|
||
|
'' 25 %
|
||
|
'' 26 &
|
||
|
'' 27 '
|
||
|
'' 28 (
|
||
|
'' 29 )
|
||
|
'' 2A *
|
||
|
'' 2B +
|
||
|
'' 2C ,
|
||
|
'' 2D -
|
||
|
'' 2E .
|
||
|
'' 2F /
|
||
|
'' 30 0..9
|
||
|
'' 3A :
|
||
|
'' 3B ;
|
||
|
'' 3C <
|
||
|
'' 3D =
|
||
|
'' 3E >
|
||
|
'' 3F ?
|
||
|
'' 40 @
|
||
|
'' 41..5A A..Z
|
||
|
'' 5B [
|
||
|
'' 5C \
|
||
|
'' 5D ]
|
||
|
'' 5E ^
|
||
|
'' 5F _
|
||
|
'' 60 `
|
||
|
'' 61..7A a..z
|
||
|
'' 7B {
|
||
|
'' 7C |
|
||
|
'' 7D }
|
||
|
'' 7E ~
|
||
|
''
|
||
|
'' 80-BF (future international character support)
|
||
|
''
|
||
|
'' C0 Left Arrow
|
||
|
'' C1 Right Arrow
|
||
|
'' C2 Up Arrow
|
||
|
'' C3 Down Arrow
|
||
|
'' C4 Home
|
||
|
'' C5 End
|
||
|
'' C6 Page Up
|
||
|
'' C7 Page Down
|
||
|
'' C8 Backspace
|
||
|
'' C9 Delete
|
||
|
'' CA Insert
|
||
|
'' CB Esc
|
||
|
'' CC Apps
|
||
|
'' CD Power
|
||
|
'' CE Sleep
|
||
|
'' CF Wakeup
|
||
|
''
|
||
|
'' D0..DB F1..F12
|
||
|
'' DC Print Screen
|
||
|
'' DD Scroll Lock
|
||
|
'' DE Caps Lock
|
||
|
'' DF Num Lock
|
||
|
''
|
||
|
'' E0..E9 Keypad 0..9
|
||
|
'' EA Keypad .
|
||
|
'' EB Keypad Enter
|
||
|
'' EC Keypad +
|
||
|
'' ED Keypad -
|
||
|
'' EE Keypad *
|
||
|
'' EF Keypad /
|
||
|
''
|
||
|
'' F0 Left Shift
|
||
|
'' F1 Right Shift
|
||
|
'' F2 Left Ctrl
|
||
|
'' F3 Right Ctrl
|
||
|
'' F4 Left Alt
|
||
|
'' F5 Right Alt
|
||
|
'' F6 Left Win
|
||
|
'' F7 Right Win
|
||
|
''
|
||
|
'' FD Scroll Lock State
|
||
|
'' FE Caps Lock State
|
||
|
'' FF Num Lock State
|
||
|
''
|
||
|
'' +100 if Shift
|
||
|
'' +200 if Ctrl
|
||
|
'' +400 if Alt
|
||
|
'' +800 if Win
|
||
|
''
|
||
|
'' eg. Ctrl-Alt-Delete = $6C9
|
||
|
''
|
||
|
''
|
||
|
'' Note: Driver will buffer up to 15 keystrokes, then ignore overflow.
|
||
|
{{
|
||
|
+------------------------------------------------------------------------------------------------------------------------------+
|
||
|
| TERMS OF USE: MIT License |
|
||
|
+------------------------------------------------------------------------------------------------------------------------------+
|
||
|
|Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation |
|
||
|
|files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, |
|
||
|
|modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software|
|
||
|
|is furnished to do so, subject to the following conditions: |
|
||
|
| |
|
||
|
|The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.|
|
||
|
| |
|
||
|
|THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE |
|
||
|
|WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR |
|
||
|
|COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
|
||
|
|ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
|
||
|
+------------------------------------------------------------------------------------------------------------------------------+
|
||
|
}}
|