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PDA Software Library
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pdasoftwarelib.iso
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ZAURUS
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PILIAPPS
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LINES.ASM
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Assembly Source File
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1997-02-07
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3KB
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124 lines
;
; LINE DEMO
;
; Copyright (C) 1996 Model Systems
; All rights reserved
;
; H I S T O R Y
; =============
; 01/11/96 Initial coding (V1.00).
;
; ======================================================================
;
pili_header:
JR start ; jump to start of prog
dl pili_bottom-pili_header ; /* size of binary image */
db "PILI BINARY MAIN " ; header for beta, main application
db 0 ; null terminate
include fncall.inc
;-----------------------------------------------------------------------------
;
; PROGRAM START
;
start:
FNCALL clearscreen,0 ; Clear the screen
FNCALL16 InfoBox, welcome, sto0 ; Display an intro box
FNCALL08 EventRead, 0, a ; Clear any events
; Init starting position
RLD32 sto0,8 ; X coord of one end of the line
RLD32 sto1,6 ; Y coord of one end of the line
RLD32 sto2,66 ; X coord of the other end
RLD32 sto3,12 ; X coord of the other end
RLD32 sto4,GP_SOLID_LINE ; Draw solid lines
; Init starting directions
RLD32 sto5,2 ; X direction of one end of the line
RLD32 sto6,2 ; Y direction of one end of the line
RLD32 sto7,-2 ; X direction of the other end
RLD32 sto8,-2 ; Y direction of the other end
draw:
FNCALL08 LineDraw,sto0,GP_XOR ; Draw the line
; Move the line ends
ADD32 sto0,sto5
ADD32 sto1,sto6
ADD32 sto2,sto7
ADD32 sto3,sto8
; Check for hitting the edges of the screen
comp1:
CMP sto0,320
JPNZ comp2
RLD32 sto5,-2
comp2:
CMP sto1,240
JPNZ comp3
RLD32 sto6,-2
comp3:
CMP sto2,320
JPNZ comp4
RLD32 sto7,-2
comp4:
CMP sto3,240
JPNZ comp5
RLD32 sto8,-2
comp5:
CMP sto0,0
JPNZ comp6
RLD32 sto5,2
comp6:
CMP sto1,0
JPNZ comp7
RLD32 sto6,2
comp7:
CMP sto2,0
JPNZ comp8
RLD32 sto7,2
comp8:
CMP sto3,0
JPNZ comp9
RLD32 sto8,2
comp9:
FNCALL08 EventRead, 0, a ; Check for key press
CMP08 a, 4 ; Anything?
JPNZ draw ; Go back and start again
EXIT
;-----------------------------------------------------------------------------
;
; DATA
;
welcome:
DB 1
DB " -= LINE DEMO =-"
DB 0Dh
DB "Written by Murray Moffatt (100240,1477)"
DB 0Dh
DB "This is just a little demo of a line"
DB 0Dh
DB "bouncing around the screen."
DB 0Dh
DB "Press any key to exit the demo."
DB 0Dh
$DATE_TIME
;-------------------------------------------------------------------------
pili_bottom: ; NEED TO BE THERE FOR HEADER
END