misc.c File Reference

Some random but useful functions. More...

Functions
CPU speed settings
char	getCpuSpeed () __naked __z88dk_sdccdecl
	Get the current cpu speed.
void	setCpuSpeed (char speed) __naked __z88dk_fastcall
	Set the current cpu speed.
unsigned int	getTime () __naked __z88dk_sdccdecl
	Get bottom bytes of realtime clock.
void	wait (unsigned char x) __naked __z88dk_fastcall
	Wait for amount of time (1/8th of sec)
char	isqrt (unsigned int val)
	DEPRECATED Int square root

Detailed Description

Some random but useful functions.

Optional #defines

• USE_CPU_SPEED - enables getCpuSpeed(), and setCpuSpeed()
• USE_GET_TIME - enables getTime()
• USE_WAIT8 - enables wait()
• USE_ISQRT - enables isqrt()

Function Documentation

getCpuSpeed()

char getCpuSpeed

(

)

Get the current cpu speed.

Returns

char of a value 0-3 0 for 8 mhz and 3 for 14.99 mhz for more info: https://wikiti.brandonw.net/index.php?title=83Plus:Ports:20

getTime()

unsigned int getTime

(

)

Get bottom bytes of realtime clock.

Returns

16-bit unsigned int of the bottom bytes of the real time clock See: https://wikiti.brandonw.net/index.php?title=83Plus:Ports:45 and https://wikiti.brandonw.net/index.php?title=83Plus:Ports:40

isqrt()

char isqrt

(

unsigned int

val

)

DEPRECATED Int square root

Parameters

[val]

unsigned int

Returns

char value of sqrt(val)

This function is DEPRECATED and slow! Please use sqrt_rounded() in fast_math.c

setCpuSpeed()

void setCpuSpeed

(

char

speed

)

Set the current cpu speed.

Parameters

[speed]

char of a value 0-3 0 for 8 mhz and 3 for 14.99 mhz for more info: https://wikiti.brandonw.net/index.php?title=83Plus:Ports:20

wait()

void wait

(

unsigned char

x

)

Wait for amount of time (1/8th of sec)

Parameters

[x]	Amount of time to wait in intervals of 1/8th of a secound