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buttonhandler.asm
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@CODE
handle_btns: PUSH R0
PUSH R1
PUSH R2
PUSH R3
LOAD R0 [GB+PREVINPUTSTATE]
LOAD R1 [GB+INPUTSTATE]
XOR R0 R1
AND R0 R1
LOAD R2 [GB+IS_BUSY]
CMP R2 0
BEQ btn0tgl
AND R0 %11100001
btn0tgl: LOAD R1 R0 ; check button 0 for toggle
AND R1 %00000001
CMP R1 %00000001
BNE btn1tgl
BRS button_0_toggled
btn1tgl: LOAD R1 R0 ; check button 1 for toggle
AND R1 %00000010
CMP R1 %00000010
BNE btn2tgl
BRS button_1_toggled
btn2tgl: LOAD R1 R0 ; check button 2 for toggle
AND R1 %00000100
CMP R1 %00000100
BNE btn3tgl
BRS button_2_toggled
btn3tgl: LOAD R1 R0 ; check button 3 for toggle
AND R1 %00001000
CMP R1 %00001000
BNE btn4tgl
BRS button_3_toggled
btn4tgl: LOAD R1 R0 ; check button 4 for toggle
AND R1 %00010000
CMP R1 %00010000
BNE btn5tgl
BRS button_4_toggled
btn5tgl: LOAD R1 R0 ; check button 5 for toggle
AND R1 %00100000
CMP R1 %00100000
BNE btn6tgl
BRS button_5_toggled
btn6tgl: LOAD R1 R0 ; check button 6 for toggle
AND R1 %01000000
CMP R1 %01000000
BNE btn7tgl
BRS button_6_toggled
btn7tgl: LOAD R1 R0 ; check button 7 for toggle
AND R1 %010000000
CMP R1 %010000000
BNE btns_down
BRS button_7_toggled
;now functions for holding down;
btns_down: LOAD R0 [GB+INPUTSTATE]
LOAD R2 [GB+IS_BUSY]
CMP R2 0
BEQ btn0hld
AND R0 %11100001
btn0hld: LOAD R1 R0 ; check button 0 for toggle
AND R1 %00000001
CMP R1 %00000001
BNE btn1hld
BRS button_0_down
btn1hld: LOAD R1 R0 ; check button 1 for toggle
AND R1 %00000010
CMP R1 %00000010
BNE btn2hld
BRS button_1_down
btn2hld: LOAD R1 R0 ; check button 2 for toggle
AND R1 %00000100
CMP R1 %00000100
BNE btn2up
BRS button_2_down
btn2up: LOAD R1 R0
LOAD R2 [GB+PREVINPUTSTATE]
XOR R1 %1
XOR R2 %1
XOR R2 R1
AND R2 R1
AND R1 %00000100
CMP R1 0
BNE btn3hld
BRS button_2_up
btn3hld: LOAD R1 R0 ; check button 3 for toggle
AND R1 %00001000
CMP R1 %00001000
BNE btn3up
BRS button_3_down
btn3up: LOAD R1 R0
LOAD R2 [GB+PREVINPUTSTATE]
XOR R1 %1
XOR R2 %1
XOR R2 R1
AND R2 R1
AND R1 %000001000
CMP R1 0
BNE btn4hld
BRS button_3_up
btn4hld: LOAD R1 R0 ; check button 4 for toggle
AND R1 %00010000
CMP R1 %00010000
BNE btn5hld
BRS button_4_down
btn5hld: LOAD R1 R0 ; check button 5 for toggle
AND R1 %00100000
CMP R1 %00100000
BNE btn6hld
BRS button_5_down
btn6hld: LOAD R1 R0 ; check button 6 for toggle
AND R1 %01000000
CMP R1 %01000000
BNE btn7hld
BRS button_6_down
btn7hld: LOAD R1 R0 ; check button 7 for toggle
AND R1 %010000000
CMP R1 %010000000
BNE r_handle_btns
BRS button_7_down
r_handle_btns:
PULL R3
PULL R2
PULL R1
PULL R0
RTS
;---------------------------------------------------------------------------------;
button_0_toggled:
PUSH R0
LOAD R0 [R5+INPUT]
AND R0 %01000000
CMP R0 %01000000
BEQ check_y_pushed
LOAD R0 [GB+MOTORDIRECTION0]
CMP R0 -1
BNE check_y_pushed
LOAD R0 [GB+POS_X]
SUB R0 1
STOR R0 [GB+POS_X]
check_y_pushed:
LOAD R0 [R5+INPUT]
AND R0 %010000000
CMP R0 %010000000
BEQ button_0_toggled_r
LOAD R0 [GB+MOTORDIRECTION2]
CMP R0 -1
BNE button_0_toggled_r
LOAD R0 [GB+POS_Y]
SUB R0 1
STOR R0 [GB+POS_Y]
button_0_toggled_r:
LOAD R0 ' e'
BRA error_state
PULL R0
RTS
;---------------------------------------------------------------------------------;
button_1_toggled: ; Checked in error state.
BRA reset
RTS
;---------------------------------------------------------------------------------;
button_2_toggled: ; Used to move motor back in down/up.
RTS
;---------------------------------------------------------------------------------;
button_3_toggled:
; PUSH R0
; LOAD R0 %10000000
; STOR R0 [R5+OUTPUT]
; STOR R0 [GB+OUTPUTSTATE]
;pause_while: BRS update_display
; LOAD R0 [R5+INPUT]
; AND R0 %01000
; CMP R0 %01000
; BEQ pause_while
; PULL R0
; player light off
RTS
;---------------------------------------------------------------------------------;
button_4_toggled:
PUSH R0
; player light off
LOAD R0 [GB+OUTPUTSTATE]
AND R0 %10111111
STOR R0 [GB+OUTPUTSTATE]
LOAD R0 1
STOR R0 [GB+IS_BUSY]
BRS scan_grid
BRS do_next_move
; turn player light on
LOAD R0 [GB+OUTPUTSTATE]
OR R0 %01000000
STOR R0 [GB+OUTPUTSTATE]
PULL R0
RTS
;---------------------------------------------------------------------------------;
button_5_toggled:
PUSH R0
LOAD R0 0 ; turn off the disc placer motor
STOR R0 [GB+MOTORDIRECTION1] ; which is motor 1
LOAD R1 -1
STOR R1 [GB+BTN_5_TS]
PULL R0
RTS
;---------------------------------------------------------------------------------;
;This is the button that is attatched to motor0 (x-axis);
button_6_toggled:
PUSH R0
LOAD R0 [GB+POS_X]
ADD R0 [GB+MOTORDIRECTION0]
STOR R0 [GB+POS_X]
LOAD R0 [R5+TIMER]
STOR R0 [GB+BTN_6_TS]
PULL R0
RTS
;---------------------------------------------------------------------------------;
;This is the button that is attatched to motor2 (y-axis);
button_7_toggled:
PUSH R0
LOAD R0 [GB+POS_Y]
ADD R0 [GB+MOTORDIRECTION2]
STOR R0 [GB+POS_Y]
LOAD R0 [R5+TIMER]
STOR R0 [GB+BTN_7_TS]
PULL R0
RTS
;---------------------------------------------------------------------------------;
button_0_down:
RTS
;---------------------------------------------------------------------------------;
button_1_down:
RTS
;---------------------------------------------------------------------------------;
button_2_down:
PUSH R0
LOAD R0 1
STOR R0 [GB+MOTORDIRECTION0]
LOAD R0 0
STOR R0 [GB+MOTORDIRECTION1]
STOR R0 [GB+MOTORDIRECTION2]
button_2_down_while:
BRS drive_motors1
LOAD R0 [R5+INPUT]
AND R0 %0100
CMP R0 0
BNE button_2_down_while
PULL R0
RTS
;---------------------------------------------------------------------------------;
button_3_down:
PUSH R0
LOAD R0 1
STOR R0 [GB+MOTORDIRECTION2]
LOAD R0 0
STOR R0 [GB+MOTORDIRECTION0]
STOR R0 [GB+MOTORDIRECTION1]
button_3_down_while:
BRS drive_motors1
LOAD R0 [R5+INPUT]
AND R0 %01000
CMP R0 0
BNE button_3_down_while
PULL R0
RTS
;---------------------------------------------------------------------------------;
button_4_down:
RTS
;---------------------------------------------------------------------------------;
button_5_down:
RTS
;---------------------------------------------------------------------------------;
button_6_down:
PUSH R0
LOAD R0 [GB+MOTORDIRECTION0]
CMP R0 0
BNE button_6_down_r
LOAD R0 [R5+TIMER]
STOR R0 [GB+BTN_6_TS]
button_6_down_r:
PULL R0
RTS
;---------------------------------------------------------------------------------;
button_7_down:
PUSH R0
LOAD R0 [GB+MOTORDIRECTION2]
CMP R0 0
BNE button_7_down_r
LOAD R0 [R5+TIMER]
STOR R0 [GB+BTN_7_TS]
button_7_down_r:
PULL R0
RTS
;---------------------------------------------------------------------------------;
button_2_up:
PUSH R0
LOAD R0 0
STOR R0 [GB+MOTORDIRECTION0]
PULL R0
RTS
;---------------------------------------------------------------------------------;
button_3_up:
PUSH R0
LOAD R0 0
STOR R0 [GB+MOTORDIRECTION2]
PULL R0
RTS
;---------------------------------------------------------------------------------;
;---------------------------------------------------------------------------------;
;INPUT: R0 containing current direction.
;OUTPUT: R0 containing toggled direction.
;---------------------------------------------------------------------------------;
toggle_dir: CMP R0 0
BLE dir_add
LOAD R0 -1
RTS
dir_add: ADD R0 1
RTS
@END