blob: 1db82a8b6379e538b9b4750781a9b53f51fb4b1a (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
@ Copyright 2022 Gabriel Jensen.
@ This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
@ If a copy of the MPL was not distributed with this file, You can obtain one at <https://mozilla.org/MPL/2.0>.
.syntax unified
.cpu arm7tdmi
.thumb
.globl ax_getpx1
.globl ax_getpx2
.func
.thumb_func
ax_getpx1:
adds r0,r1 @ Get the address of the pixel by adding the offset to the video address.
ldrh r0,[r0]
bx lr
.endfunc
.func
.thumb_func
ax_getpx2:
adds r0,r1 @ Get the address of the pixel by adding the offset to the video address.
adds r0,r1 @ Add the offset twice as each pixel takes up two bytes.
ldrh r0,[r0]
bx lr
.endfunc
|
