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INCLUDE "WRISTAPP.I"
org $100
jmp test
idx EQU $60
rot_cnt EQU $61
k EQU $62
src1 EQU $63
src2 EQU $64
dest EQU $65
; BYTES 60-67 are persisent RAM for our use
; BYTES 110-435 are copied in from the EEPROM when we run
org $110
START EQU *
;0x110 The main entry point - WRIST_MAIN
jmp main
;0x113 Called when we are suspended for any reason - WRIST_SUSPEND
rts
nop
nop
;0x116 Called to handle any timers or time events - WRIST_DOTIC
rts
nop
nop
;0x119 Called when the COMM app starts and we have timers pending - WRIST_INCOMM
rts
nop
nop
;0x11c Called when the COMM app loads new data - WRIST_NEWDATA
rts
nop
nop
;0x11f The state table get routine - WRIST_GETSTATE
lda state_table0,X
rts
;0x123 The state handler for state 0
jmp handle_st0_event
;0x126 Offset of state zero into the state table
db state_table0 - state_table0
hello_string: timex6 "HELLO "
; state table
state_table0:
db 0
db EVT_ENTER, TIM_ONCE, 0 ; Initial state
db EVT_RESUME, TIM_ONCE, 0 ; Resume from a nested app
db EVT_DNNEXT, TIM_ONCE, 0 ; Next button
db EVT_MODE, TIM_ONCE, $FF ; Mode button - quit
db EVT_END
;
; (7) This is the main initialization routine which is called when we first get the app into memory
;
main:
lda #$c0 ; We want button beeps and to indicate that we have been loaded
sta $96
rts
handle_st0_event:
bset 1,$8f ; Indicate that we can be suspended
; lda BTNSTATE ; Get the event
jsr CLEARALL ; Clear the screen
lda #hello_string-start
jsr PUT6TOP
lda #SYS8_MODE ; Get the system offset for the 'MODE' string
jsr PUTMSGBOT ; and put it on the bottom line
rts
test:
jsr sha1
stop
sha1:
ldx #0
sha1_copy_h_to_ae_loop:
lda H,x
sta VA,x
incx
cpx #20
bne sha1_copy_h_to_ae_loop
lda #0
sta idx
sha1_loop:
; a contains idx
cmp #20
bhs sha1_k2
lda #(K1-base)
sta k
; T1 = (B & C) | ((~B) & D)
lda #(T2-base)
sta dest
lda #(VB-base)
sta src1
lda #(FFFFFFFF-base)
jsr xor4 ;T2=~B
lda #(T2-base)
sta src1
lda #(VD-base)
jsr and4 ;T2=T2&D
bra sha1_t2_or_bandc ; T1=T2 | (B&C)
sha1_k2:
cmp #40
bhs sha1_k3
lda #(K2-base)
sta k
bra sha1_k24 ; T1 = B ^ C ^ D
sha1_k3:
cmp #60
bhs sha1_k4
; T1 = (B & C) | (B & D) | (C & D)
lda #(K3-base)
sta k
lda #(T1-base)
sta dest
lda #(VD-base)
sta src1
lda #(VB-base)
jsr and4 ; T1=B&D
lda #(T2-base)
sta dest
lda #(VC-base)
jsr and4 ; T2=C&D
lda #(T2-base)
sta src1
lda #(T1-base)
jsr or4 ; T2=T1|T2
sha1_t2_or_bandc:
lda #(T1-base)
sta dest
lda #(VB-base)
sta src1
lda #(VC-base)
jsr and4 ; T1 = B&C
lda #(T1-base)
sta src1
lda #(T2-base)
jsr or4 ; T1= T1|T2
bra sha1_shuffle
sha1_k4:
lda #(K4-base)
sta k
sha1_k24:
; T1 = B ^ C ^ D
lda #(T1-base)
sta dest
lda #(VB-base)
sta src1
lda #(VC-base)
jsr xor4
lda #(T1-base)
sta src1
lda #(VD-base)
jsr xor4
sha1_shuffle:
; T1 is src1 and dest here
lda #(VE-base)
jsr add4 ; T1=T1+E
lda k
jsr add4 ; T1=T1+k
; get data here
lda #(ZERO-base)
jsr add4 ; T1=T1+data
lda #(VD-base)
jsr copy_down ; E=D
lda #(VC-base)
jsr copy_down ; D=C
lda #(VB-base)
jsr copy_down ; C=B
lda #30
jsr rot_left ; C=ROTLEFT(C,30)
lda #(VA-base)
jsr copy_down ; B=A
lda #(VA-base)
sta dest
sta src1
lda #5
jsr rot_left ; A=ROTLEFT(A,5)
lda #(T1-base)
jsr add4 ; A=A+T1
ldx #0
sha1_add0:
clc
sha1_add1:
lda VA,x
adc H,x
sta VA,x
incx
txa
and #3
bne sha1_add1
cpx #20
bne sha1_add0
lda idx
add #1
cmp #80
bhs sha1_done
jmp sha1_loop
sha1_done:
rts
copy_down:
sta src1
add #4
sta dest
lda #(ZERO-base)
add4:
sta src2
lda #$d9 ; adc $ffff,a
sta op4_src2
bra op4_binary
and4:
sta src2
lda #$d4 ; and $ffff,a
sta op4_src2
bra op4_binary
xor4:
sta src2
lda #$d8 ; eor $ffff,a
sta op4_src2
bra op4_binary
or4:
sta src2
lda #$da ; or $ffff,a
sta op4_src2
op4_binary:
ldx #0
lda #base & $ff
add src2
sta op4_src2+2
txa
adc #base>>8
sta op4_src2+1
lda #base & $ff
add src1
sta op4_src1+2
txa
adc #base>>8
sta op4_src1+1
lda #base & $ff
add dest
sta op4_dst+2
txa
adc #base>>8
sta op4_dst+1
clc
op4_1:
op4_src1:
lda $fffe,x
op4_src2:
adc $fffe,x
op4_dst:
sta $fffe,x
incx
txa
and #3
bne op4_1
rts
rot_left:
ldx dest
sta rot_cnt
rot_loop:
lda base,x
rola
lda base+1,x
rola
sta base+1,x
lda base+2,x
rola
sta base+2,x
lda base+3,x
rola
sta base+3,x
lda base,x
rola
sta base,x
dec rot_cnt
bne rot_loop
rts
data:
H: DB $01
DB $23
DB $45
DB $67
DB $89
DB $AB
DB $CD
DB $EF
DB $FE
DB $DC
DB $BA
DB $98
DB $76
DB $54
DB $32
DB $10
DB $F0
DB $E1
DB $D2
DB $C3
base:
K1:
DB $99
DB $79
DB $82
DB $5A
K2:
DB $A1
DB $EB
DB $D9
DB $6E
K3:
DB $DC
DB $BC
DB $1B
DB $8F
K4:
DB $D6
DB $C1
DB $62
DB $CA
K5:
DB $D0
DB $83
DB $8C
DB $46
FFFFFFFF:
DB $FF
DB $FF
DB $FF
DB $FF
bss:
VA: DW 0
DW 0
VB: DW 0
DW 0
VC: DW 0
DW 0
VD: DW 0
DW 0
VE: DW 0
DW 0
T1: DW 0
DW 0
T2: DW 0
DW 0
ZERO: DW 0
DW 0
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