Some shit software I was messing with on gb
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include "charmap.inc"
include "video.inc"
include "defines.inc"
include "utils.inc"
include "hardware.inc"
cursor_max equ 5
section "prog/ezflash_test.asm@wram", wram0
w_cursor: db
w_write_val: db
w_write_addr: dw
w_write2_val: db
w_write2_addr: dw
w_read_addr: dw
section "prog/ezflash_test.asm", rom0
prog_ezflash_test::
call lcd_disable
call font_load
call pals_set_bw
call vram_clear_bgmap
call lcd_enable
ld hl, string_title
bgcoord de, (screen_width - string_title.end + string_title + 1) / 2, 2
call prints
ld hl, string_write
bgcoord de, 2, 5
call prints
ld hl, string_write
bgcoord de, 2, 7
call prints
ld hl, string_read
bgcoord de, 2, 10
call prints
xor a
ld [w_cursor], a
ld [w_write_val], a
ld [w_write2_val], a
ld [w_write2_addr + 0], a
ld [w_read_addr + 0], a
ld a, $a0
ld [w_read_addr + 1], a
ld a, $c0
ld [w_write_addr + 0], a
ld a, $7f
ld [w_write_addr + 1], a
ld a, $a0
ld [w_write2_addr + 1], a
ld hl, ezf_write_code
ld de, ezf_write_ram
ld bc, ezf_write_end - ezf_write_ram
call memcpy
call ezf_unlock
call update_write_addr
call update_write_val
call update_write2_addr
call update_write2_val
call update_read_addr
xor a
call update_cursor
main:
call update_read_view
call vblank_wait
call joypad_update
ldh a, [h_joypad_pressed]
rra ; joy_a
jr c, .joy_a
rra ; joy_b
rra ; joy_select
rra ; joy_start
rra ; joy_right
jr c, .joy_right
rra ; joy_left
jr c, .joy_left
rra ; joy_up
jr c, .joy_up
rra ; joy_down
jr c, .joy_down
jr main
.joy_a
ld a, [w_cursor]
srl a
and a
jr z, .joy_a_write
dec a
jr z, .joy_a_write2
jr main
.joy_a_write
ld hl, w_write_addr
ld a, [hl+]
ld h, [hl]
ld l, a
ld a, [w_write_val]
call ezf_write
jr main
.joy_a_write2
ld hl, w_write2_addr
ld a, [hl+]
ld h, [hl]
ld l, a
ld a, [w_write2_val]
call ezf_write
jr main
.joy_right
ld a, 1
call update_cursor
jr main
.joy_left
ld a, cursor_max - 1
call update_cursor
jr main
.joy_up
ld de, $10
ldh a, [h_joypad_down]
bit joy_b_f, a
jr nz, .joy_up_done
ld de, 1
.joy_up_done
call update_val
jr main
.joy_down
ld de, -$10
ldh a, [h_joypad_down]
bit joy_b_f, a
jr nz, .joy_down_done
ld de, -1
.joy_down_done
call update_val
jr main
update_val:
; de: value increment
ld a, [w_cursor]
ld hl, .jumptable
ld c, 2
call array_index
ld a, [hl+]
ld h, [hl]
ld l, a
jp hl
.jumptable
dw .write_addr
dw .write_val
dw .write2_addr
dw .write2_val
dw .read_addr
.write_addr
ld hl, w_write_addr
ld a, [hl+]
ld h, [hl]
ld l, a
add hl, de
ld a, l
ld [w_write_addr + 0], a
ld a, h
ld [w_write_addr + 1], a
jp update_write_addr
.write_val
ld hl, w_write_val
ld a, [hl]
add e
ld [hl], a
jp update_write_val
.write2_addr
ld hl, w_write2_addr
ld a, [hl+]
ld h, [hl]
ld l, a
add hl, de
ld a, l
ld [w_write2_addr + 0], a
ld a, h
ld [w_write2_addr + 1], a
jp update_write2_addr
.write2_val
ld hl, w_write2_val
ld a, [hl]
add e
ld [hl], a
jp update_write2_val
.read_addr
ld hl, w_read_addr
ld a, [hl+]
ld h, [hl]
ld l, a
add hl, de
ld a, l
ld [w_read_addr + 0], a
ld a, h
ld [w_read_addr + 1], a
jp update_read_addr
update_cursor:
; a: cursor increment
ld hl, w_cursor
ld e, [hl]
ld d, e
add e
ld c, cursor_max
call divide
ld [hl], a
ld e, a
; d: old, e: new
ld a, d
ld d, 0
call .set
ld a, e
ld d, "-"
.set
; a: position
; d: character
ld hl, .coords
ld c, 2
call array_index
ld a, [hl+]
ld h, [hl]
ld l, a
call lcd_blank_wait
ld [hl], d
ret
.coords
dbgcoord 8, 5
dbgcoord 8 + 6, 5
dbgcoord 8, 7
dbgcoord 8 + 6, 7
dbgcoord 8, 10
update_write_addr:
ld hl, w_write_addr
ld a, [hl+]
ld h, [hl]
ld l, a
bgcoord de, 9, 5
jp print_hex_4digit
update_write_val:
ld a, [w_write_val]
bgcoord de, 9 + 6, 5
jp print_hex_2digit
update_write2_addr:
ld hl, w_write2_addr
ld a, [hl+]
ld h, [hl]
ld l, a
bgcoord de, 9, 7
jp print_hex_4digit
update_write2_val:
ld a, [w_write2_val]
bgcoord de, 9 + 6, 7
jp print_hex_2digit
update_read_addr:
ld hl, w_read_addr
ld a, [hl+]
ld h, [hl]
ld l, a
bgcoord de, 9, 10
jp print_hex_4digit
update_read_view:
ld hl, w_read_addr
ld a, [hl+]
ld h, [hl]
ld l, a
bgcoord de, 2, 12
ld b, 4
.loop
ld c, 8
.loop_inner
push bc
ld a, [hl+]
call print_hex_2digit
pop bc
dec c
jr nz, .loop_inner
add_r16_8 de, 32 - 16
dec b
jr nz, .loop
ret
ezf_unlock:
xor a
ld hl, $7f31
call ezf_write
ld a, $80
ld hl, $7f32
jp ezf_write
string_title: db "EZFLASH TESTER$"
.end
string_write: db "WRITE$"
string_read: db "READ$"
ezf_write:
; a: value
; hl: address
ld b, a
ld a, h
cp $7f
jp nz, ezf_write_do
ld a, l
cp $d2
jp z, .wait
cp $36
jp nz, ezf_write_do
.wait
push bc
push hl
ld hl, $7fc0
ld b, $05
call ezf_write_do
bgcoord de, 15, 10
ld a, "."
call lcd_blank_wait
ld [de], a
pop hl
pop bc
call ezf_write_7fd2
bgcoord de, 15, 10
xor a
call lcd_blank_wait
ld [de], a
ret
ezf_write_code:
load "prog/ezflash_test.asm@ezf_write", wram0
ezf_write_ram:
ezf_write_do:
ld de, $7f00
ld a, $e1
ld [de], a
ld e, $10
inc a
ld [de], a
ld e, $20
inc a
ld [de], a
ld [hl], b
ld e, $f0
inc a
ld [de], a
ret
ezf_write_7fd2:
di
call ezf_write_do
ld de, $a000
.loop
ld a, [de]
and a
jr nz, .loop
jr @ ; TEST
ld b, 0
call ezf_write_do
ei
ret
; 7f32:01 -> 7fd2:01 (hang)
; 7f36:02 (hang)
; 7f36:03 (hang)
ezf_write_end: