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rom-lcd.S
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rom-lcd.S
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. = 0x1b62
lcd_show:
add.b #256-(man_stand & 0xff), r6l /* do not change!!!! */
add.b #256-(man_stand >> 8), r6h /* MUST NOT BE subx (zero flag) */
bne 1f
cmp.b #(man_run - man_stand), r6l
bhi 2f
/* show_man */
mov.b @(lcd_man_info:16, r6), r6h
mov.b @(lcd_display:16), r6l
and.b #0xf0, r6l
or.b r6h, r6l
mov.b r6l, @(lcd_display:16)
1: sub.w r6, r6
rts
2: cmp.b #(c_right - man_stand), r6l
bhi 1f
/* show_simple */
push r5
mov.b @((lcd_simple_bit - 2):16, r6), r5l
add.w r6, r6
mov.w @((lcd_simple_addr - 2*2):16, r6), r6
bset r5l, @r6
pop r5
2: sub.w r6,r6
rts
1: cmp.b #(battery_x - man_stand),r6l
blo 1f
bne 2f
/* battery_x */
mov.w #(lcd_display+4), r6
bset #0, @r6
sub.w r6,r6
rts
2: cmp.b #(ir_full - man_stand), r6l
bhi 2f
/* ir_low / full */
mov.w #(lcd_display+6), r6
bist #3, @r6
bset #2, @r6
sub.w r6,r6
rts
2: cmp.b #(everything - man_stand), r6l
bne 2f
/* everything */
mov.w #0x09ff, r6
push r5
3: mov.w #lcd_display+9,r5
mov.b r6l, @-r5
dec r6h
bne 3b
pop r5
2: mov.b #0, r6l
rts
1: /* circle, dot, dot_inv */
cmp.b #(circle - man_stand),r6l
blo 2b
bhi 1f
/* circle*/
mov.b @circle_counter, r6l
inc r6l
cmp.b #5, r6l
beq 2f
mov.b r6l, @circle_counter
push r5
mov.w #(lcd_display + 2), r5
mov.b @(lcd_circle_order-1, r6), r6l
bset r6l, @r5
pop r5
sub.w r6,r6
rts
1:
mov.b @(lcd_display + 2), r6l
and.b #0xf0, r6l
mov.b r6l, @(lcd_display + 2)
sub.w r6,r6
mov.b r6l, @circle_counter
rts
/* dot or dot_inv*/
1: push r5
mov.b @dot_counter, r5l
inc r5l
cmp.b #6, r5l
bne 1f
mov.b #0, r5l
mov.b r5l, @dot_counter
cmp #(dot_inv - man_run), r6l
mov.w #(lcd_display+6), r6
beq 1f
cmp.b #1, r5l
bhi 2f
bclr #4, @r6
inc r6l
bclr #1, @r6
/* carry still 1 iff r5l changed from 5 -> 0 */
bist #4, @r6
inc r6l
bclr #1, @r6
bclr #4, @r6
bra 3f
2: mov.b #0, r5h
add.b #1, r5l
shlr r5l
mov.b @(lcd_dot_order_addr-1, r5), r6l
bist #2, r5h /* set bit 4, if r5 even, set bit 0 otherwise */
bset r5h, @r6
3: pop r5
sub.w r6,r6
rts
1: /* dot_inv */
cmp.b #1, r5l
bne 2f
bset #4, @r6
inc r6l
bset #0, @r6
bset #4, @r6
inc r6l
bset #0, @r6
bset #4, @r6
bra 3f
2: mov #0, r5h
shlr r5l /* r6 + r5l / 2 = lcd_addr */
bist #2, r5h /* bit 4, iff r5 % 2 == 0 */
4: bclr r5h, @r6
3: pop r5
sub.w r6,r6
rts
lcd_man_info:
.byte 0x6, 0xb
lcd_circle_order:
.byte 0, 2, 3, 1
lcd_dot_order_addr:
.byte 0x4a, 0x4b, 0x49
lcd_simple_bit:
.byte 0
.byte 1
.byte 4
.byte 0
.byte 4
.byte 4
.byte 2
.byte 6
.byte 2
.byte 6
.byte 2
.byte 2
.byte 6
.byte 6
.byte 6
lcd_simple_addr:
.word 0xef49
.word 0xef49
.word 0xef48
.word 0xef48
.word 0xef47
.word 0xef45
.word 0xef4a
.word 0xef46
.word 0xef46
.word 0xef43
.word 0xef44
.word 0xef47
.word 0xef44
.word 0xef47
.word 0xef45
. = 0x1e4a
lcd_hide:
add.b #256-(man_stand & 0xff), r6l /* do not change!!!! */
add.b #256-(man_stand >> 8), r6h /* MUST NOT BE subx (zero flag) */
bne 1f
cmp.b #(man_run - man_stand), r6l
bhi 2f
/* hide man */
mov.b @(lcd_man_info:16, r6), r6h
not.b r6h
mov.b @(lcd_display:16), r6l
and.b r6h, r6l
mov.b r6l, @(lcd_display:16)
1: sub.w r6, r6
rts
2: cmp.b #(c_right - man_stand), r6l
bhi 1f
/* hide simple */
push r5
mov.b @((lcd_simple_bit - 2):16, r6), r5l
add.w r6, r6
mov.w @((lcd_simple_addr - 2*2):16, r6), r6
bclr r5l, @r6
pop r5
2: sub.w r6,r6
rts
1: cmp.b #(battery_x - man_stand),r6l
blo 1f
bne 2f
/* battery_x */
mov.w #(lcd_display+4), r6
bclr #0, @r6
sub.w r6,r6
rts
2: cmp.b #(ir_full - man_stand), r6l
bhi 2f
/* ir_low / full */
mov.w #(lcd_display+6), r6
bclr #3, @r6
bclr #2, @r6
2: sub.w r6,r6
rts
1: /* circle, dot, dot_inv */
cmp.b #(circle - man_stand),r6l
blo 2b
bhi 1f
/* circle*/
mov.b @(lcd_display + 2), r6l
and.b #0xf0, r6l
mov.b r6l, @(lcd_display + 2)
sub.w r6,r6
mov.b r6l, @circle_counter
rts
/* dot or dot_inv*/
1: mov.b r6h, @dot_counter
mov.w #(lcd_display+6), r6
bclr #4, @r6
inc r6l
bclr #0, @r6
bclr #4, @r6
inc r6l
bclr #0, @r6
bclr #4, @r6
sub.w r6,r6
rts
. = 0x1fb6
read_buttons:
add.b #0, r6l
addx #256-0x30, r6h
bne 1f
push r5
mov.b @(_PORT7:8),r5h
bld #6, r5h
bist #1, r6l
bld #7, r5h
bist #2, r6l
bld #2, @(_PORT4:8)
bist #0, r6l
mov.w @(4:16,r7), r5
mov.w r6, @r5
pop r5
1: sub.w r6,r6
rts
. = 0x1ff2
lcd_number:
cmp.b #0x30, r6h
beq 1f
lcd_num_ret:
sub.w r6, r6
rts
1:
cmp.b #0x01, r6l
beq 1f
cmp.b #0x1f, r6l
beq 1f
cmp.b #0x17, r6l
bne lcd_num_ret
jmp lcd_num_digit
1:
push r0
push r1
push r2
push r3
push r4
push r5
mov.w r6,r4
mov.w @(14:16,r7),r6 /* counter */
mov.w @(16:16,r7),r3 /* comma */
cmp.b #0x30, r3h
bne 1f
cmp.b #0x06, r3l
bcs 2f
1: sub.w r3,r3
2: mov.b r3l, r4h
cmp.b #0x01, r4l
bne 1f
mov.w r6, r6
bpl 1f
not.b r6l
not.b r6h
adds #1,r6
mov.b #0x00, r4l
1: mov.w #9999, r1
cmp.w r1, r6
bls 1f
mov.w r1, r6
1:
mov.b @(lcd_display + 0), r0h
mov.b @(lcd_display + 1), r0l
mov.b @(lcd_display + 3), r1h
mov.b @(lcd_display + 4), r1l
mov.b @(lcd_display + 5), r2h
mov.b @(lcd_display + 6), r2l
mov.b @(lcd_display + 7), r3h
mov.b @(lcd_display + 8), r3l
and.b #0x4f, r0h
and.b #0xf4, r0l
and.b #0x44, r1h
and.b #0xf5, r1l
and.b #0x15, r2h
and.b #0x1f, r2l
and.b #0x15, r3h
and.b #0x15, r3l
mov.b r6h, r5l
mov.b #0, r5h
mov.b #10, r6h
divxu.b r6h, r5 /* divide 0:r6h / 10 -> r5h, r5l */
mov.b r5h, r6h
mov.b #10, r5h
divxu.b r5h, r6 /* divide high:r6l / 10 -> r6h, r6l */
mov.b r5l, r5h
mov.b r6h, r5l
mov.b r5h, r6h
mov.b #0, r5h
mov.b @(lcd_num_dig2mask, r5), r5l
bld #2, r5l
bst #4, r0h
bld #0, r5l
bst #5, r0h
bld #5, r5l
bst #7, r0h
bld #1, r5l
bst #1, r1l
bld #6, r5l
bst #3, r1l
bld #3, r5l
bst #5, r2h
bld #4, r5l
bst #7, r2h
cmp.b #2, r4h /* check dot */
bhi 1f /* dot will follow, we must print this digit */
mov.w r6, r6
bne 1f /* more digits we have to print */
cmp.b #1, r4l /* check for sign */
bhi 1f /* unsigned : print it */
bst #1, r0l /* Now counter sign is in carry */
jmp lcd_num_finish
1: mov.b #10, r5l
divxu.b r5l, r6
mov.b r6h, r5l
mov.b #0, r6h
mov.b @(lcd_num_dig2mask, r5), r5l
bld #2, r5l
bst #0, r0l
bld #0, r5l
bst #1, r0l
bld #5, r5l
bst #3, r0l
bld #1, r5l
bst #1, r2h
bld #6, r5l
bst #3, r2h
bld #3, r5l
bst #5, r2l
bld #4, r5l
bst #7, r2l
cmp.b #3, r4h /* check dot */
bhi 1f
bist #6, r2h /* r4h == 3 -> nocarry -> set dot */
mov.b r6l, r6l
bne 1f /* more digits we have to print */
cmp.b #1, r4l /* check for sign */
bhi 1f /* unsigned : print it */
bst #1, r1h /* Now counter sign is in carry */
bra lcd_num_finish
1: mov.b #10, r5l
divxu.b r5l, r6
mov.b r6h, r5l
mov.b #0, r6h
mov.b @(lcd_num_dig2mask, r5), r5l
bld #2, r5l
bst #0, r1h
bld #0, r5l
bst #1, r1h
bld #5, r5l
bst #3, r1h
bld #1, r5l
bst #1, r3l
bld #6, r5l
bst #3, r3l
bld #3, r5l
bst #5, r3l
bld #4, r5l
bst #7, r3l
cmp.b #4, r4h /* check dot */
bhi 1f
bist #6, r2l /* r4h == 4 -> nocarry -> set dot */
mov.b r6l, r6l
bne 1f /* more digits we have to print */
cmp.b #1, r4l /* check for sign */
bhi 1f /* unsigned : print it */
bst #5, r1h /* Now counter sign is in carry */
bra lcd_num_finish
1: mov.b @(lcd_num_dig2mask, r6), r5l
bld #2, r5l
bst #4, r1h
bld #0, r5l
bst #5, r1h
bld #5, r5l
bst #7, r1h
bld #1, r5l
bst #1, r3h
bld #6, r5l
bst #3, r3h
bld #3, r5l
bst #5, r3h
bld #4, r5l
bst #7, r3h
cmp.b #5, r4h /* check dot */
bne 1f
bset #6, r3l /* r4h == 4 -> nocarry -> set dot */
1: cmp.b #1, r4l /* check for sign */
bst #6, r3h /* Now counter sign is in carry */
lcd_num_finish:
mov.b r0h, @(lcd_display + 0)
mov.b r0l, @(lcd_display + 1)
mov.b r1h, @(lcd_display + 3)
mov.b r1l, @(lcd_display + 4)
mov.b r2h, @(lcd_display + 5)
mov.b r2l, @(lcd_display + 6)
mov.b r3h, @(lcd_display + 7)
mov.b r3l, @(lcd_display + 8)
pop r5
pop r4
pop r3
pop r2
pop r1
pop r0
sub.w r6,r6
rts
lcd_num_digit:
mov.w @(2:16,r7),r6 /* counter */
cmp.b #10, r6l
bcc 1f
mov r6h, r6h
bne 1f
mov.b @(lcd_num_dig2mask, r6), r6l
push r0
mov.b @(lcd_display+1), r0h
mov.b @(lcd_display+2), r0l
mov.b @(lcd_display+4), r6h
and.b #0x4f,r0h
and.b #0x5f,r0l
and.b #0x5f,r6h
bld #2, r6l
bst #4, r0h
bld #0, r6l
bst #5, r0h
bld #5, r6l
bst #7, r0h
bld #1, r6l
bst #5, r0l
bld #6, r6l
bst #7, r0l
bld #3, r6l
bst #5, r6h
bld #4, r6l
bst #7, r6h
mov.b r0h, @(lcd_display+1)
mov.b r0l, @(lcd_display+2)
mov.b r6h, @(lcd_display+4)
pop r0
1: sub.w r6,r6
rts
lcd_num_dig2mask:
.byte 0x7e, 0x42, 0x37, 0x67, 0x4b
.byte 0x6d, 0x7d, 0x46, 0x7f, 0x6f
. = 0x27ac
lcd_clear:
/* clear lcd area from 0xef43 to 0xef4c (10 bytes) */
push r5
mov.w #0xef4d, r5
mov.w #10, r6
1: mov.b r6h, @-r5
dec r6l
bne 1b
pop r5
rts
. = 0x27c8
lcd_refresh:
/* refresh lcd display: add header before lcd area and call i2c */
push r5
mov.w #lcd_display, r6
mov.b #0x00, r5l /* LCD_LOAD_DATAPTR 0 */
mov.b r5l, @-r6
mov.b #0xe0, r5l /* LCD_LOAD_SUBADDR 0 | I2C_MORE_DATA */
mov.b r5l, @-r6
mov.b #0xc8, r5l /* LCD_MODE_SET | LCD_ENABLE | I2C_MORE_DATA */
mov.b r5l, @-r6
mov.b #0x7c, r5l /* LCD_DEV_ID | I2C_WRITE */
mov.b r5l, @-r6
mov.b #13, r5h /* number of bytes to transfer */
bsr write_lcd_output
sub.b r6l, r6l
pop r5
rts
. = 0x27f4
reset_buttons_and_irq:
mov.b @PORT4_DDR_SHADOW:16, r6l /* make irq0 pin input. (PWR BTN)*/
bclr #2, r6l
mov.b r6l, @PORT4_DDR_SHADOW:16
mov.b r6l, @_PORT4_DDR:8
bset #0, @_ISCR:8
bset #0, @_IER:8
mov.b @PORT6_DDR_SHADOW:16, r6l
or.b #0x60, r6l
mov.b r6l, @_PORT6_DDR:8
mov.b r6l, @PORT6_DDR_SHADOW:16
rts
write_lcd_output:
/* r6: pointer to output i2c data */
/* r5h: number of bytes to transfer */
/* NOT COMPATIBLE with original function at 0x283c */
#define DELAY /* XXX Do we need an delay? - brickemu certainly does not. */
mov.b @PORT6_DDR_SHADOW:16, r5l
or.b #0x60, r5l
mov.b r5l, @_PORT6_DDR:8
mov.b r5l, @PORT6_DDR_SHADOW:16
bset #6, @_PORT6:8 /* I2C START */
bset #5, @_PORT6:8
bclr #6, @_PORT6:8
DELAY
bclr #5, @_PORT6:8
2: mov.b @r6+, r5l
shll r5l /* get first bit */
or.b #1, r5l /* put marker bit for emptiness test */
1: bst #6, @_PORT6:8 /* set i2c data to bit */
DELAY
bset #5, @_PORT6:8 /* set i2c clock */
DELAY
bclr #5, @_PORT6:8 /* clear i2c clock */
shll r5l /* get next bit */
bne 1b /* repeat until marker bit removed */
mov.b @PORT6_DDR_SHADOW:16, r5l
bclr #6, r5l /* set i2c to read */
mov.b r5l, @_PORT6_DDR:8
bset #5, @_PORT6:8 /* set i2c clock */
DELAY
/* we don't read acknowledge bit, though */
bclr #5, @_PORT6:8 /* clear i2c clock */
bset #6, r5l
mov.b r5l, @_PORT6_DDR:8
dec r5h
bne 2b
bclr #6, @_PORT6:8 /* I2C END */
DELAY
bset #5, @_PORT6:8
DELAY
bset #6, @_PORT6:8
rts