uncart/source/delay.s

// Copyright 2014 Normmatt
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

.arm
.global ioDelay
.type   ioDelay STT_FUNC

@ioDelay ( u32 us )
ioDelay:
	ldr r1, =0x18000000  @ VRAM
1:
	@ Loop doing uncached reads from VRAM to make loop timing more reliable
	ldr r2, [r1]
	subs r0, #1
	bgt 1b
	bx lr
Added licences to some files. 2015-05-12 11:15:16 +12:00			`// Copyright 2014 Normmatt`
			`// Licensed under GPLv2 or any later version`
			`// Refer to the license.txt file included.`

Initial commit 2015-05-04 15:32:23 -07:00			`.arm`
			`.global ioDelay`
			`.type ioDelay STT_FUNC`

			`@ioDelay ( u32 us )`
			`ioDelay:`
Do uncached reads inside ioDelay to improve delay reliability 2015-05-15 19:26:14 -03:00			`ldr r1, =0x18000000 @ VRAM`
			`1:`
			`@ Loop doing uncached reads from VRAM to make loop timing more reliable`
			`ldr r2, [r1]`
Initial commit 2015-05-04 15:32:23 -07:00			`subs r0, #1`
Do uncached reads inside ioDelay to improve delay reliability 2015-05-15 19:26:14 -03:00			`bgt 1b`
Ensure newlines are at the end of all files 2015-05-10 01:00:50 -07:00			`bx lr`