Demo (SDK)

Programs
Assembly: bgcol1 bgcol2 charset ciao fill1 fill2 gamekeys idummy iload ipnggen1 ipnggen2 irawrgba keypad loop1 loop2 loop3 maze resize setpal sprites stdpal tiles vintage C: bounce cciao clock cpubm dpyinfo fps gperf hello mandelbrot newline pngtest rand time

Support Files
c64jb.c cgetc.s chline.s clock.s clrscr.s color.s cputc.s crt0.s ctype.s cvline.s gotox.s gotoxy.s gotoy.s header.s jbit.cfg jbit.h jbit.inc kbhit.s mainargs.s randomize.s vsync.s wherex.s wherey.s _scrsize.s _systime.s

+----------+
|          |
|  JBitRT  |
|  MIDlet  |
| Emulator |
|          |
|  1 2 3   |
|  4 5 6   |
|  7 8 9   |
|  * 0 #   |
|          |
+----------+

keypad.jb

; Firing characters (press any key except * to fire a character, \
; use * to stop firing).
; CPU: BEQ (Banch if EQual) and CMP (CoMPare accumulator).
; IO: Read from 2:24; if the value is 0 no key has been pressed; \
; a value different than 0 is the ASCII code of the key \
; that has been pressed (e.g. '0' is 48). \
; Write 1 into 2:24 to acknowledge the key and remove it from 2:24. \
; At most 8 unacknowledged keys are kept, the others are lost.


	.include "jbit.inc"

.code

start:	lda	#0
next:	sta	FRMDRAW
	lda	KEYBUF
	beq	next
	cmp	#'*'
	beq	quit
	ldx	#0
L1:	sta	CONVIDEO,x
	tay
	lda	#0
	sta	FRMDRAW
	lda	#' '
	sta	CONVIDEO,x
	tya
	inx
	cpx	#10
	bne	L1
	lda	#1
	sta	KEYBUF
	jmp	start
quit:	brk

keypad.s