Kickassembler-Modules

Handy 6510 assembly modules for Kick Assembler

TaskOS.asm

A simple task system.

similar to the one Robotron arcade uses.

note1: now when adding tasks, the system will search for a free slot to use.

SystemType.asm

Detect PAL / NTSC.

	jsr SystemType 
	// A 	= 0 PAL
		= 1 NTSC 

	lda SystemType.isNTSC 

Debug.asm

	lda <value>
	ldx <msb screen address>
	ldy <lsb screen address>

	//	00-FF
	jsr Debug.PrintHex
	//	0-255
	jsr Debug.PrintDEC8

Joystick.asm

	//	initialize the joystick code
	jsr Joystick.Reset 

	per vblank 
	jsr Joystick.Poll

	ldx #Joystick.FIRE ( or UP,DOWN,LEFT,RIGHT )
	jsr Joystick.Pressed 

	//	A = 1	input just pressed
	//	if you hold the button down this will return 1 only the first time you press the button 
	//	A = 0 all other times 

	ldx #Joystick.FIRE ( or UP,DOWN,LEFT,RIGHT )
	jsr Joystick.Held 

	//	A = 0 if it's currently held
	//	A = 1 if not 

	lda Joystick.data+UP 
	lda Joystick.data+DOWN
	lda Joystick.data+LEFT
	lda Joystick.data+RIGHT
	lda Joystick.data+FIRE

	//	A!=$ff if it's been touched in the last 8 ticks
	//	(A & 1) == 0 if it's currently held 

TestTaskOS.asm

A simple test of the above modules.

detects PAL/NTSC and adjusts the frequency the TaskOS is updated.

In order to keep logic and timing the same on PAL or NTSC machines.

Shows how to add and change tasks running in the system. 

Tapping fire will add a simple task ( these tasks will kill themselves after updating for a while )

APUltra.asm

Decompression. 

quick port to Kickassembler module from.

AP Ultra

Random.asm

Random numbers 

For 8 bit numbers

	jsr Random.RND8Seed
	jsr Random.RND8 
	A = number 

For 16 bit

	jsr Random.RND16Seed 
	jsr Random.RND16 
	A = high byte
	Random.result16 is the word 

Using SID chip

	jsr Random.RNDSIDInit
	jsr Random.RNDSID 

or use macro 

	RNDSID

Memory.asm

Macros 

	lda #$value 
	memset(dest,size in bytes)

	memcpy(source,dest,size in bytes)