console.h File Reference

coleco generic console support. More...

#include <coleco/coltypes.h>

Go to the source code of this file.

Functions
u8	sys_choice (u8 minval, u8 maxval)
	Wait until a key between two values if pressed. More...
void	sys_memcpyb (void *dest, void *src, unsigned num)
	Copy memory. More...
void	sys_pause (void)
	Wait until a fire button is pressed (do a pause)
u8	sys_randbyte (u8 A, u8 B)
	Generate and return a randomized a 8 bit number between two numbers named A and B. More...
u16	sys_random (void)
	Generate and return a randomized 16 bit number. More...
char *	sys_str (unsigned value)
	return a converted value in string More...
u16	sys_strlen (char *text)
	return the length of a string More...
void	sys_utoa (unsigned value, char *buffer)
	Convert an unsigned value to ascii text. More...

Variables
u8	buffer32 [32]
	buffer32 used for some functions. More...
volatile u8	vid_freq
	vid_freq is set with video frequency (50 or 60) hz.

Detailed Description

coleco generic console support.

This unit provides generic features related to the console.

Here is the list of features:

• variable with 32 bytes long in RAM
  
• video frequency
  
• string management
  

Function Documentation

sys_choice()

u8 sys_choice	(	u8	minval,
		u8	maxval
	)

Wait until a key between two values if pressed.

Parameters

minval	minimum value of key pressed
maxval	maximum value of key pressed

Returns

value of key pressed

sys_memcpyb()

void sys_memcpyb	(	void *	dest,
		void *	src,
		unsigned	num
	)

Copy memory.

Parameters

dest	destination memory
src	source memory
num	number of bytes to copy

sys_randbyte()

u8 sys_randbyte	(	u8	A,
		u8	B
	)

Generate and return a randomized a 8 bit number between two numbers named A and B.

Parameters

A	minimum value of random number
B	maximum value of random number

Returns

unsigned char of a randomized number

sys_random()

u16 sys_random

(

void

)

Generate and return a randomized 16 bit number.

Returns

unsigned short of a randomized number

Examples:

random/randvalue.c.

sys_str()

char * sys_str

(

unsigned

value

)

return a converted value in string

Parameters

value

number to convert

Returns

pointer to converted string

Examples:

scoring/scoring.c.

sys_strlen()

u16 sys_strlen

(

char *

text

)

return the length of a string

Parameters

text	text to analyze

Returns

unsigned short of string length

sys_utoa()

void sys_utoa	(	unsigned	value,
		char *	buffer
	)

Convert an unsigned value to ascii text.

Leading zeros are put in buffer

Parameters

value	value to convert to text
buffer	text that will receive vvalue converted

Examples:

random/randvalue.c.

Variable Documentation

buffer32

u8 buffer32[32]

buffer32 used for some functions.

can be used by program too.

Examples:

random/randvalue.c.