\chapter{Task 3: TBD Example}
\label{chp:task3}

This chapter implements a simple task which will be loaded into the system
as task number [[3]].

<<Task 3 implementation>>=
	;; Task 3 - TBD
; header
<<Task 3 header>>

; routines
<<Task 3 process routine>>
@

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\section{Header}

<<Task 3 header>>=
t3header:
        .byte   0xc9, 0x4a, 0x73, 0x4c  ; cookie
        .byte   0x01                    ; version
        .byte   0x04                    ; requested timeslices
	.word	t3name			; name
        .word   t3process               ; process function

t3name:
	.byte	6			; strlen
        .asciz  "Task 3"                ; name
@


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\section{Process routine}

<<Task 3 process routine>>=
t3process:
	ld      hl, #(colram)   ; base of color ram
	ld      a, #0x01        ; clear the screen to 0x00
	ld      b, #0x04        ; 256*4 = 1k
	call	memsetN

	ld	hl, #(vidram)	; base of video ram
	ld	a, #0x78	; 'X'
	ld	b, #0x04	; 256*4 = 1k
	call	memsetN

	ld	hl, #(vidram)	; base of video ram
	ld	a, #0x79	; 'Y'
	ld	b, #0x04	; 256*4 = 1k
	call	memsetN

	ld	hl, #(vidram)	; base of video ram
	ld	a, #0x7a	; 'Z'
	ld	b, #0x04	; 256*4 = 1k
	call	memsetN

	jp	t3process
	halt
@