Home » Archimedes archive » Acorn User » AU 1994-06.adf » !WriteDemo_WriteDemo » Modules/Water/Source
Modules/Water/Source
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
Tape/disk: | Home » Archimedes archive » Acorn User » AU 1994-06.adf » !WriteDemo_WriteDemo |
Filename: | Modules/Water/Source |
Read OK: | ✔ |
File size: | 1CB2 bytes |
Load address: | 0000 |
Exec address: | 0000 |
Duplicates
There is 1 duplicate copy of this file in the archive:
- Archimedes archive » Acorn User » AU 1994-06.adf » !WriteDemo_WriteDemo » Modules/Water/Source
- Archimedes archive » Acorn User » AU 1994-05.adf » !WriteDemo_WriteDemo » Modules/Water/Source
File contents
10REM >Water 20 30ON ERROR SYS "Hourglass_Smash":ERROR 0,(REPORT$+" (internal error code "+STR$(ERL)+")") 40 50REM Fixed variables : 60 70 REM Note : h%*2 cannot be >top% ! 80 90 trigger$ = "z" 100 trigger% = TRUE 110 120 REM y position of water in pixels 130 y% = 170 140 150 REM start y position of water in pixels 160 start_y% = 255 170 180 REM height of water in pixels (approx) 190 h% = (y%/2) 200 210 REM byte=byte OR orr%, for every pixel reflected. 220 REM in the format BGgRbrtT where : 230 REM R = high red bit, r = low red bit 240 REM G = high green bit, g = low green bit 250 REM B = high blue bit, b = low blue bit 260 REM T = high tint bit, t = low tint bit 270 orr% = %10001000 280 290 300 310module$ = "Water" 320 330SYS "Hourglass_On" 340PROCassemble 350PROCinit 360 370OSCLI"SAVE <Modules$Dir>."+module$+".Module "+STR$~code%+" "+STR$~P% 380OSCLI"SETTYPE <Modules$Dir>."+module$+".Module Data" 390 400SYS "Hourglass_Off" 410END 420 430 440 450DEF PROCassemble 460 len% = 1024 * 2 470 DIM code% len% 480 FOR pass% = 8 TO 10 STEP 2 490 P% = code% 500 L% = code% + len% 510 [OPT pass% 520 530 540.init EQUD 0 550.frame EQUD wave - code% 560.end EQUD 0 570 580 590 600.wave STMFD R13!,{R0-R11,R14} 610 ] 620 IF trigger% THEN 630 [OPT pass% 640 TST R11,#( 1 << (ASC("z") - ASC(trigger$)) ) 650 BEQ wave_end 660 ] 670 ENDIF 680 [OPT pass% 690 700 710 LDR R0,var% 720 CMP R0,#y% 730 SUBGT R0,R0,#1 740 STR R0,var% 750 MOV R1,R0,LSL#6 760 ADD R1,R1,R0,LSL#8 770 STR R1,offset% ; store scr_offset in offset% 780 STR R12,screen% ; store scr_address in screen% 790 ADD R0,R12,#(320*256) ; r0=screen+((bottom+1)*320) 800 STR R0,max_scr% ; store r0 in max_scr% 810 LDR R11,offset% ; r11=screen_offset 820 830 MOV R2,R0 ; r2=maximum screen address 840 ADD R0,R1,R12 ; r0=scr_offset+scr_addr 850 MOV R3,#0 ; r3=black word 860.word_loop STR R3,[R0],#320 ; put word at left of line 870 CMP R0,R2 ; is scr_addr < max_addr ? 880 BLT word_loop ; if so, go to 'world_loop' 890 900 ADD R1,R12,R11 ; r1=screen+screen_offset 910 STR R1,water_pos% ; store r1 in water_pos% 920 SUB R0,R1,#320 ; r0=addr of reflection 930 MOV R2,#h% ; r2=number of rows of water 940 LDR R11,wave_pos% ; r11=position in wave table 950 ADD R12,R11,#4 ; increment position by 4 960 CMP R12,#(h%*4) ; if it has exceeded table, 970 MOVEQ R12,#0 ; then reset it to zero 980 STR R12,wave_pos% ; store position in wave table 990 ADR R12,table% ; r12=addr of wave data table 1000 ADR R14,perspect% ; r14=perspective table addr 1010 1020 B wave_1 ; go to 'wave_1' 1030 1040.table% FNarray(4*h%) ; water motion offsets table 1050.perspect% FNarray(4*h%) ; perspective factors table 1060 1070.wave_1 LDR R4,[R12,R11] ; r4=wave height 1080 SUBS R11,R11,#4 ; move wave height pointer 1090 MOVMI R11,#((h%-1)*4) 1100 LDR R5,[R14],#4 ; get perspective factor 1110 CMP R5,#0 ; is it zero ? 1120 BEQ zero ; if so, go to 'zero' 1130 MUL R6,R4,R5 ; r6=wave_height*perspective 1140 MOV R6,R6,ASR#20 ; r6=r6>>>20 1150 CMP R6,#0 ; is wave_height (r6) <0 1160 ADDLT R6,R6,#1 ; if so, r6=r6+1 1170 LDR R1,water_pos% ; r1=screen offset for water 1180 ADD R1,R1,R6,LSL#6 ; r1=r1+(wave_height*320) 1190 ADD R1,R1,R6,LSL#8 1200 LDR R3,max_scr% ; r3=maximum screen address 1210 CMP R1,R3 ; does r1 exceed this ? 1220 BGE exit ; if so, exit 1230 B skip ; go to 'skip' 1240 1250.zero LDR R1,offset% ; when wave_height=0 1260 LDR R3,screen% 1270 ADD R1,R1,R3 ; r1=screen_address+offset 1280 1290.skip STR R11,temp_wave% ; store wave table pointer 1300 LDR R11,orr_word% ; r11=byte ORing word 1310 1320 ] 1330 FOR loop% = 1 TO 10 1340 [OPT pass% 1350 1360 LDMIA R0!,{R3-R10} ; get screen data 1370 ORR R3,R3,R11 ; set blue bits in words 1380 ORR R4,R4,R11 1390 ORR R5,R5,R11 1400 ORR R6,R6,R11 1410 ORR R7,R7,R11 1420 ORR R8,R8,R11 1430 ORR R9,R9,R11 1440 ORR R10,R10,R11 1450 STMIA R1!,{R3-R10} ; plot reflection 1460 1470 ] 1480 NEXT 1490 [OPT pass% 1500 1510 LDR R11,temp_wave% ; get wave pointer back 1520 SUB R0,R0,#960 ; screen_position-=3 lines 1530 LDR R1,water_pos% ; r1=water_position 1540 ADD R1,R1,#320 ; add offset to next line 1550 STR R1,water_pos% ; store water_position 1560 SUBS R2,R2,#1 ; another line ? 1570 BNE wave_1 ; if so, go to 'wave_1' 1580 1590.exit LDR R12,screen% ; r12=screen address 1600 LDR R0,offset% ; r0=water address offset 1610 ADD R0,R0,R12 ; r0=r0+r12 1620 LDR R2,max_scr% ; r2=maximum screen address 1630.fill_loop LDR R3,[R0] ; get word at left of line 1640 CMP R3,#0 ; is it black (an empty line) 1650 BNE move_fill ; if not, go to 'move_fill' 1660 SUB R1,R0,#320 ; r1=address of line to copy 1670 1680 ] 1690 FOR loop% = 1 TO 10 1700 [OPT pass% 1710 1720 LDMIA R1!,{R3-R10} ; get data of line above 1730 STMIA R0!,{R3-R10} ; store it in empty line 1740 1750 ] 1760 NEXT 1770 [OPT pass% 1780 1790 B end_fill ; jump to 'end_fill' 1800.move_fill ADD R0,R0,#320 ; if not black goto next line 1810.end_fill CMP R0,R2 ; is scr_addr < max_addr ? 1820 BLT fill_loop ; if so, go to 'fill_loop' 1830 1840.wave_end LDMFD R13!,{R0-R11,PC} ; exit 1850 1860 1870.var% EQUD start_y% 1880.water_pos% EQUD 0 1890.temp_wave% EQUD 0 1900.screen% EQUD 0 1910.offset% EQUD y%*320 1920.max_scr% EQUD 0 1930.wave_pos% EQUD 0 1940.orr_word% EQUD orr% + (orr%*1<<8) + (orr%*1<<16) + (orr%*1<<24) 1950 1960 1970 ] 1980 NEXT 1990ENDPROC 2000 2010 2020 2030DEF FNarray(size%) 2040 P% += size% 2050= 0 2060 2070 2080 2090DEF PROCinit 2100 LOCAL I% 2110 2120 FOR I% = 0 TO (h% - 1) 2130 table%!(I%*4) = (h%/10) * SINRAD(I% * (360/(h%/2)) ) 2140 NEXT 2150 2160 FOR I% = 0 TO (h% - 1) 2170 perspect%!(I%*4) = (I% / (h%-1)) * (1 << 20) 2180 NEXT 2190 2200ENDPROC
� >Water G� � ș "Hourglass_Smash":� 0,(�$+" (internal error code "+�(�)+")") ( 2� Fixed variables : < F% � Note : h%*2 cannot be >top% ! P Z trigger$ = "z" d trigger% = � n x% � y position of water in pixels � y% = 170 � �, � start y position of water in pixels � start_y% = 255 � �+ � height of water in pixels (approx) � h% = (y%/2) � �6 � byte=byte OR orr%, for every pixel reflected. �' � in the format BGgRbrtT where : �, � R = high red bit, r = low red bit �. � G = high green bit, g = low green bit �- � B = high blue bit, b = low blue bit - � T = high tint bit, t = low tint bit orr% = %10001000 " , 6module$ = "Water" @ Jș "Hourglass_On" T �assemble ^ �init h rA�"SAVE <Modules$Dir>."+module$+".Module "+�~code%+" "+�~P% |4�"SETTYPE <Modules$Dir>."+module$+".Module Data" � �ș "Hourglass_Off" �� � � � �� �assemble � len% = 1024 * 2 � � code% len% � � pass% = 8 � 10 � 2 � P% = code% � L% = code% + len% � [OPT pass% .init EQUD 0 &".frame EQUD wave - code% 0.end EQUD 0 : D N X'.wave STMFD R13!,{R0-R11,R14} b ] l � trigger% � v [OPT pass% �< TST R11,#( 1 << (�("z") - �(trigger$)) ) � BEQ wave_end � ] � � � [OPT pass% � � � LDR R0,var% � CMP R0,#y% � SUBGT R0,R0,#1 � STR R0,var% �! MOV R1,R0,LSL#6 �$ ADD R1,R1,R0,LSL#8 E STR R1,offset% ; store scr_offset in offset% F STR R12,screen% ; store scr_address in screen% D ADD R0,R12,#(320*256) ; r0=screen+((bottom+1)*320) > STR R0,max_scr% ; store r0 in max_scr% *; LDR R11,offset% ; r11=screen_offset 4 >D MOV R2,R0 ; r2=maximum screen address HA ADD R0,R1,R12 ; r0=scr_offset+scr_addr R8 MOV R3,#0 ; r3=black word \B.word_loop STR R3,[R0],#320 ; put word at left of line fB CMP R0,R2 ; is scr_addr < max_addr ? pC BLT word_loop ; if so, go to 'world_loop' z �A ADD R1,R12,R11 ; r1=screen+screen_offset �@ STR R1,water_pos% ; store r1 in water_pos% �? SUB R0,R1,#320 ; r0=addr of reflection �D MOV R2,#h% ; r2=number of rows of water �D LDR R11,wave_pos% ; r11=position in wave table �A ADD R12,R11,#4 ; increment position by 4 �C CMP R12,#(h%*4) ; if it has exceeded table, �< �Q R12,#0 ; then reset it to zero �F STR R12,wave_pos% ; store position in wave table �E ADR R12,table% ; r12=addr of wave data table �D ADR R14,perspect% ; r14=perspective table addr � �8 B wave_1 ; go to 'wave_1' C.table% �array(4*h%) ; water motion offsets table B.perspect% �array(4*h%) ; perspective factors table $ .8.wave_1 LDR R4,[R12,R11] ; r4=wave height 8B SUBS R11,R11,#4 ; move wave height pointer B% MOVMI R11,#((h%-1)*4) L@ LDR R5,[R14],#4 ; get perspective factor V6 CMP R5,#0 ; is it zero ? `= BEQ zero ; if so, go to 'zero' jD MUL R6,R4,R5 ; r6=wave_height*perspective t4 MOV R6,R6,ASR#20 ; r6=r6>>>20 ~@ CMP R6,#0 ; is wave_height (r6) <0 �8 ADDLT R6,R6,#1 ; if so, r6=r6+1 �D LDR R1,water_pos% ; r1=screen offset for water �A ADD R1,R1,R6,LSL#6 ; r1=r1+(wave_height*320) �$ ADD R1,R1,R6,LSL#8 �C LDR R3,max_scr% ; r3=maximum screen address �? CMP R1,R3 ; does r1 exceed this ? �5 BGE exit ; if so, exit �6 B skip ; go to 'skip' � �<.zero LDR R1,offset% ; when wave_height=0 � LDR R3,screen% �B ADD R1,R1,R3 ; r1=screen_address+offset B.skip STR R11,temp_wave% ; store wave table pointer < LDR R11,orr_word% ; r11=byte �ing word ( ] 2 � loop% = 1 � 10 < [OPT pass% F P9 LDMIA R0!,{R3-R10} ; get screen data Z? �R R3,R3,R11 ; set blue bits in words d �R R4,R4,R11 n �R R5,R5,R11 x �R R6,R6,R11 � �R R7,R7,R11 � �R R8,R8,R11 � �R R9,R9,R11 � �R R10,R10,R11 �9 STMIA R1!,{R3-R10} ; plot reflection � � ] � � � [OPT pass% � �? LDR R11,temp_wave% ; get wave pointer back �B SUB R0,R0,#960 ; screen_position-=3 lines �; LDR R1,water_pos% ; r1=water_position A ADD R1,R1,#320 ; add offset to next line > STR R1,water_pos% ; store water_position 8 SUBS R2,R2,#1 ; another line ? "? BNE wave_1 ; if so, go to 'wave_1' , 6<.exit LDR R12,screen% ; r12=screen address @B LDR R0,offset% ; r0=water address offset J4 ADD R0,R0,R12 ; r0=r0+r12 TD LDR R2,max_scr% ; r2=maximum screen address ^B.fill_loop LDR R3,[R0] ; get word at left of line hE CMP R3,#0 ; is it black (an empty line) rC BNE move_fill ; if not, go to 'move_fill' |D SUB R1,R0,#320 ; r1=address of line to copy � � ] � � loop% = 1 � 10 � [OPT pass% � �@ LDMIA R1!,{R3-R10} ; get data of line above �@ STMIA R0!,{R3-R10} ; store it in empty line � � ] � � � [OPT pass% � �< B end_fill ; jump to 'end_fill' E.move_fill ADD R0,R0,#320 ; if not black goto next line B.end_fill CMP R0,R2 ; is scr_addr < max_addr ? B BLT fill_loop ; if so, go to 'fill_loop' & 0..wave_end LDMFD R13!,{R0-R11,PC} ; exit : D N.var% EQUD start_y% X.water_pos% EQUD 0 b.temp_wave% EQUD 0 l.screen% EQUD 0 v.offset% EQUD y%*320 �.max_scr% EQUD 0 �.wave_pos% EQUD 0 �F.orr_word% EQUD orr% + (orr%*1<<8) + (orr%*1<<16) + (orr%*1<<24) � � � ] � � �� � � � �� �array(size%) � P% += size% = 0 *� �init 4 � I% > H � I% = 0 � (h% - 1) R8 table%!(I%*4) = (h%/10) * ��(I% * (360/(h%/2)) ) \ � f p � I% = 0 � (h% - 1) z4 perspect%!(I%*4) = (I% / (h%-1)) * (1 << 20) � � � �� �
00000000 0d 00 0a 0c f4 20 3e 57 61 74 65 72 0d 00 14 04 |..... >Water....| 00000010 0d 00 1e 47 ee 20 85 20 c8 99 20 22 48 6f 75 72 |...G. . .. "Hour| 00000020 67 6c 61 73 73 5f 53 6d 61 73 68 22 3a 85 20 30 |glass_Smash":. 0| 00000030 2c 28 f6 24 2b 22 20 28 69 6e 74 65 72 6e 61 6c |,(.$+" (internal| 00000040 20 65 72 72 6f 72 20 63 6f 64 65 20 22 2b c3 28 | error code "+.(| 00000050 9e 29 2b 22 29 22 29 0d 00 28 04 0d 00 32 17 f4 |.)+")")..(...2..| 00000060 20 46 69 78 65 64 20 76 61 72 69 61 62 6c 65 73 | Fixed variables| 00000070 20 3a 0d 00 3c 04 0d 00 46 25 20 20 f4 20 4e 6f | :..<...F% . No| 00000080 74 65 20 3a 20 68 25 2a 32 20 63 61 6e 6e 6f 74 |te : h%*2 cannot| 00000090 20 62 65 20 3e 74 6f 70 25 20 21 0d 00 50 04 0d | be >top% !..P..| 000000a0 00 5a 14 20 20 74 72 69 67 67 65 72 24 20 3d 20 |.Z. trigger$ = | 000000b0 22 7a 22 0d 00 64 12 20 20 74 72 69 67 67 65 72 |"z"..d. trigger| 000000c0 25 20 3d 20 b9 0d 00 6e 04 0d 00 78 25 20 20 f4 |% = ...n...x% .| 000000d0 20 79 20 70 6f 73 69 74 69 6f 6e 20 6f 66 20 77 | y position of w| 000000e0 61 74 65 72 20 69 6e 20 70 69 78 65 6c 73 0d 00 |ater in pixels..| 000000f0 82 14 20 20 79 25 20 20 20 20 20 20 20 3d 20 31 |.. y% = 1| 00000100 37 30 0d 00 8c 04 0d 00 96 2c 20 20 f4 20 20 73 |70......., . s| 00000110 74 61 72 74 20 79 20 70 6f 73 69 74 69 6f 6e 20 |tart y position | 00000120 6f 66 20 77 61 74 65 72 20 69 6e 20 70 69 78 65 |of water in pixe| 00000130 6c 73 0d 00 a0 14 20 20 73 74 61 72 74 5f 79 25 |ls.... start_y%| 00000140 20 3d 20 32 35 35 0d 00 aa 04 0d 00 b4 2b 20 20 | = 255.......+ | 00000150 f4 20 20 68 65 69 67 68 74 20 6f 66 20 77 61 74 |. height of wat| 00000160 65 72 20 69 6e 20 70 69 78 65 6c 73 20 28 61 70 |er in pixels (ap| 00000170 70 72 6f 78 29 0d 00 be 17 20 20 68 25 20 20 20 |prox).... h% | 00000180 20 20 20 20 3d 20 28 79 25 2f 32 29 0d 00 c8 04 | = (y%/2)....| 00000190 0d 00 d2 36 20 20 f4 20 20 62 79 74 65 3d 62 79 |...6 . byte=by| 000001a0 74 65 20 4f 52 20 6f 72 72 25 2c 20 66 6f 72 20 |te OR orr%, for | 000001b0 65 76 65 72 79 20 70 69 78 65 6c 20 72 65 66 6c |every pixel refl| 000001c0 65 63 74 65 64 2e 0d 00 dc 27 20 20 f4 20 20 69 |ected....' . i| 000001d0 6e 20 74 68 65 20 66 6f 72 6d 61 74 20 42 47 67 |n the format BGg| 000001e0 52 62 72 74 54 20 77 68 65 72 65 20 3a 0d 00 e6 |RbrtT where :...| 000001f0 2c 20 20 f4 20 20 52 20 3d 20 68 69 67 68 20 72 |, . R = high r| 00000200 65 64 20 62 69 74 2c 20 20 20 72 20 3d 20 6c 6f |ed bit, r = lo| 00000210 77 20 72 65 64 20 62 69 74 0d 00 f0 2e 20 20 f4 |w red bit.... .| 00000220 20 20 47 20 3d 20 68 69 67 68 20 67 72 65 65 6e | G = high green| 00000230 20 62 69 74 2c 20 67 20 3d 20 6c 6f 77 20 67 72 | bit, g = low gr| 00000240 65 65 6e 20 62 69 74 0d 00 fa 2d 20 20 f4 20 20 |een bit...- . | 00000250 42 20 3d 20 68 69 67 68 20 62 6c 75 65 20 62 69 |B = high blue bi| 00000260 74 2c 20 20 62 20 3d 20 6c 6f 77 20 62 6c 75 65 |t, b = low blue| 00000270 20 62 69 74 0d 01 04 2d 20 20 f4 20 20 54 20 3d | bit...- . T =| 00000280 20 68 69 67 68 20 74 69 6e 74 20 62 69 74 2c 20 | high tint bit, | 00000290 20 74 20 3d 20 6c 6f 77 20 74 69 6e 74 20 62 69 | t = low tint bi| 000002a0 74 0d 01 0e 1a 20 20 6f 72 72 25 20 20 20 20 20 |t.... orr% | 000002b0 3d 20 25 31 30 30 30 31 30 30 30 0d 01 18 04 0d |= %10001000.....| 000002c0 01 22 04 0d 01 2c 04 0d 01 36 15 6d 6f 64 75 6c |."...,...6.modul| 000002d0 65 24 20 3d 20 22 57 61 74 65 72 22 0d 01 40 04 |e$ = "Water"..@.| 000002e0 0d 01 4a 15 c8 99 20 22 48 6f 75 72 67 6c 61 73 |..J... "Hourglas| 000002f0 73 5f 4f 6e 22 0d 01 54 0d f2 61 73 73 65 6d 62 |s_On"..T..assemb| 00000300 6c 65 0d 01 5e 09 f2 69 6e 69 74 0d 01 68 04 0d |le..^..init..h..| 00000310 01 72 41 ff 22 53 41 56 45 20 20 20 20 3c 4d 6f |.rA."SAVE <Mo| 00000320 64 75 6c 65 73 24 44 69 72 3e 2e 22 2b 6d 6f 64 |dules$Dir>."+mod| 00000330 75 6c 65 24 2b 22 2e 4d 6f 64 75 6c 65 20 22 2b |ule$+".Module "+| 00000340 c3 7e 63 6f 64 65 25 2b 22 20 22 2b c3 7e 50 25 |.~code%+" "+.~P%| 00000350 0d 01 7c 34 ff 22 53 45 54 54 59 50 45 20 3c 4d |..|4."SETTYPE <M| 00000360 6f 64 75 6c 65 73 24 44 69 72 3e 2e 22 2b 6d 6f |odules$Dir>."+mo| 00000370 64 75 6c 65 24 2b 22 2e 4d 6f 64 75 6c 65 20 44 |dule$+".Module D| 00000380 61 74 61 22 0d 01 86 04 0d 01 90 16 c8 99 20 22 |ata".......... "| 00000390 48 6f 75 72 67 6c 61 73 73 5f 4f 66 66 22 0d 01 |Hourglass_Off"..| 000003a0 9a 05 e0 0d 01 a4 04 0d 01 ae 04 0d 01 b8 04 0d |................| 000003b0 01 c2 0f dd 20 f2 61 73 73 65 6d 62 6c 65 0d 01 |.... .assemble..| 000003c0 cc 15 20 20 6c 65 6e 25 20 3d 20 31 30 32 34 20 |.. len% = 1024 | 000003d0 2a 20 32 0d 01 d6 12 20 20 de 20 63 6f 64 65 25 |* 2.... . code%| 000003e0 20 6c 65 6e 25 0d 01 e0 1a 20 20 e3 20 70 61 73 | len%.... . pas| 000003f0 73 25 20 3d 20 38 20 b8 20 31 30 20 88 20 32 0d |s% = 8 . 10 . 2.| 00000400 01 ea 12 20 20 20 20 50 25 20 3d 20 63 6f 64 65 |... P% = code| 00000410 25 0d 01 f4 19 20 20 20 20 4c 25 20 3d 20 63 6f |%.... L% = co| 00000420 64 65 25 20 2b 20 6c 65 6e 25 0d 01 fe 12 20 20 |de% + len%.... | 00000430 20 20 5b 4f 50 54 20 70 61 73 73 25 0d 02 08 04 | [OPT pass%....| 00000440 0d 02 12 04 0d 02 1c 17 2e 69 6e 69 74 20 20 20 |.........init | 00000450 20 20 20 20 45 51 55 44 20 20 30 0d 02 26 22 2e | EQUD 0..&".| 00000460 66 72 61 6d 65 20 20 20 20 20 20 45 51 55 44 20 |frame EQUD | 00000470 20 77 61 76 65 20 2d 20 63 6f 64 65 25 0d 02 30 | wave - code%..0| 00000480 17 2e 65 6e 64 20 20 20 20 20 20 20 20 45 51 55 |..end EQU| 00000490 44 20 20 30 0d 02 3a 04 0d 02 44 04 0d 02 4e 04 |D 0..:...D...N.| 000004a0 0d 02 58 27 2e 77 61 76 65 20 20 20 20 20 20 20 |..X'.wave | 000004b0 53 54 4d 46 44 20 52 31 33 21 2c 7b 52 30 2d 52 |STMFD R13!,{R0-R| 000004c0 31 31 2c 52 31 34 7d 0d 02 62 11 20 20 20 20 20 |11,R14}..b. | 000004d0 20 20 20 20 20 20 20 5d 0d 02 6c 1c 20 20 20 20 | ]..l. | 000004e0 20 20 20 20 20 20 20 20 e7 20 74 72 69 67 67 65 | . trigge| 000004f0 72 25 20 8c 0d 02 76 1c 20 20 20 20 20 20 20 20 |r% ...v. | 00000500 20 20 20 20 20 20 5b 4f 50 54 20 70 61 73 73 25 | [OPT pass%| 00000510 0d 02 80 3c 20 20 20 20 20 20 20 20 20 20 20 20 |...< | 00000520 20 20 54 53 54 20 20 20 52 31 31 2c 23 28 20 31 | TST R11,#( 1| 00000530 20 3c 3c 20 28 97 28 22 7a 22 29 20 2d 20 97 28 | << (.("z") - .(| 00000540 74 72 69 67 67 65 72 24 29 29 20 29 0d 02 8a 20 |trigger$)) )... | 00000550 20 20 20 20 20 20 20 20 20 20 20 20 20 20 42 45 | BE| 00000560 51 20 20 20 77 61 76 65 5f 65 6e 64 0d 02 94 13 |Q wave_end....| 00000570 20 20 20 20 20 20 20 20 20 20 20 20 20 20 5d 0d | ].| 00000580 02 9e 11 20 20 20 20 20 20 20 20 20 20 20 20 cd |... .| 00000590 0d 02 a8 1a 20 20 20 20 20 20 20 20 20 20 20 20 |.... | 000005a0 5b 4f 50 54 20 70 61 73 73 25 0d 02 b2 04 0d 02 |[OPT pass%......| 000005b0 bc 10 20 20 20 20 20 20 20 20 20 20 20 20 0d 02 |.. ..| 000005c0 c6 1d 20 20 20 20 20 20 20 20 20 20 20 20 4c 44 |.. LD| 000005d0 52 20 20 20 52 30 2c 76 61 72 25 0d 02 d0 1c 20 |R R0,var%.... | 000005e0 20 20 20 20 20 20 20 20 20 20 20 43 4d 50 20 20 | CMP | 000005f0 20 52 30 2c 23 79 25 0d 02 da 1e 20 20 20 20 20 | R0,#y%.... | 00000600 20 20 20 20 20 20 20 53 55 42 47 54 20 52 30 2c | SUBGT R0,| 00000610 52 30 2c 23 31 0d 02 e4 1d 20 20 20 20 20 20 20 |R0,#1.... | 00000620 20 20 20 20 20 53 54 52 20 20 20 52 30 2c 76 61 | STR R0,va| 00000630 72 25 0d 02 ee 21 20 20 20 20 20 20 20 20 20 20 |r%...! | 00000640 20 20 4d 4f 56 20 20 20 52 31 2c 52 30 2c 4c 53 | MOV R1,R0,LS| 00000650 4c 23 36 0d 02 f8 24 20 20 20 20 20 20 20 20 20 |L#6...$ | 00000660 20 20 20 41 44 44 20 20 20 52 31 2c 52 31 2c 52 | ADD R1,R1,R| 00000670 30 2c 4c 53 4c 23 38 0d 03 02 45 20 20 20 20 20 |0,LSL#8...E | 00000680 20 20 20 20 20 20 20 53 54 52 20 20 20 52 31 2c | STR R1,| 00000690 6f 66 66 73 65 74 25 20 20 20 20 20 20 20 20 3b |offset% ;| 000006a0 20 73 74 6f 72 65 20 73 63 72 5f 6f 66 66 73 65 | store scr_offse| 000006b0 74 20 69 6e 20 6f 66 66 73 65 74 25 0d 03 0c 46 |t in offset%...F| 000006c0 20 20 20 20 20 20 20 20 20 20 20 20 53 54 52 20 | STR | 000006d0 20 20 52 31 32 2c 73 63 72 65 65 6e 25 20 20 20 | R12,screen% | 000006e0 20 20 20 20 3b 20 73 74 6f 72 65 20 73 63 72 5f | ; store scr_| 000006f0 61 64 64 72 65 73 73 20 69 6e 20 73 63 72 65 65 |address in scree| 00000700 6e 25 0d 03 16 44 20 20 20 20 20 20 20 20 20 20 |n%...D | 00000710 20 20 41 44 44 20 20 20 52 30 2c 52 31 32 2c 23 | ADD R0,R12,#| 00000720 28 33 32 30 2a 32 35 36 29 20 3b 20 72 30 3d 73 |(320*256) ; r0=s| 00000730 63 72 65 65 6e 2b 28 28 62 6f 74 74 6f 6d 2b 31 |creen+((bottom+1| 00000740 29 2a 33 32 30 29 0d 03 20 3e 20 20 20 20 20 20 |)*320).. > | 00000750 20 20 20 20 20 20 53 54 52 20 20 20 52 30 2c 6d | STR R0,m| 00000760 61 78 5f 73 63 72 25 20 20 20 20 20 20 20 3b 20 |ax_scr% ; | 00000770 73 74 6f 72 65 20 72 30 20 69 6e 20 6d 61 78 5f |store r0 in max_| 00000780 73 63 72 25 0d 03 2a 3b 20 20 20 20 20 20 20 20 |scr%..*; | 00000790 20 20 20 20 4c 44 52 20 20 20 52 31 31 2c 6f 66 | LDR R11,of| 000007a0 66 73 65 74 25 20 20 20 20 20 20 20 3b 20 72 31 |fset% ; r1| 000007b0 31 3d 73 63 72 65 65 6e 5f 6f 66 66 73 65 74 0d |1=screen_offset.| 000007c0 03 34 10 20 20 20 20 20 20 20 20 20 20 20 20 0d |.4. .| 000007d0 03 3e 44 20 20 20 20 20 20 20 20 20 20 20 20 4d |.>D M| 000007e0 4f 56 20 20 20 52 32 2c 52 30 20 20 20 20 20 20 |OV R2,R0 | 000007f0 20 20 20 20 20 20 20 3b 20 20 72 32 3d 6d 61 78 | ; r2=max| 00000800 69 6d 75 6d 20 73 63 72 65 65 6e 20 61 64 64 72 |imum screen addr| 00000810 65 73 73 0d 03 48 41 20 20 20 20 20 20 20 20 20 |ess..HA | 00000820 20 20 20 41 44 44 20 20 20 52 30 2c 52 31 2c 52 | ADD R0,R1,R| 00000830 31 32 20 20 20 20 20 20 20 20 20 3b 20 20 72 30 |12 ; r0| 00000840 3d 73 63 72 5f 6f 66 66 73 65 74 2b 73 63 72 5f |=scr_offset+scr_| 00000850 61 64 64 72 0d 03 52 38 20 20 20 20 20 20 20 20 |addr..R8 | 00000860 20 20 20 20 4d 4f 56 20 20 20 52 33 2c 23 30 20 | MOV R3,#0 | 00000870 20 20 20 20 20 20 20 20 20 20 20 20 3b 20 20 72 | ; r| 00000880 33 3d 62 6c 61 63 6b 20 77 6f 72 64 0d 03 5c 42 |3=black word..\B| 00000890 2e 77 6f 72 64 5f 6c 6f 6f 70 20 20 53 54 52 20 |.word_loop STR | 000008a0 20 20 52 33 2c 5b 52 30 5d 2c 23 33 32 30 20 20 | R3,[R0],#320 | 000008b0 20 20 20 20 3b 20 70 75 74 20 77 6f 72 64 20 61 | ; put word a| 000008c0 74 20 6c 65 66 74 20 6f 66 20 6c 69 6e 65 0d 03 |t left of line..| 000008d0 66 42 20 20 20 20 20 20 20 20 20 20 20 20 43 4d |fB CM| 000008e0 50 20 20 20 52 30 2c 52 32 20 20 20 20 20 20 20 |P R0,R2 | 000008f0 20 20 20 20 20 20 3b 20 69 73 20 73 63 72 5f 61 | ; is scr_a| 00000900 64 64 72 20 3c 20 6d 61 78 5f 61 64 64 72 20 3f |ddr < max_addr ?| 00000910 0d 03 70 43 20 20 20 20 20 20 20 20 20 20 20 20 |..pC | 00000920 42 4c 54 20 20 20 77 6f 72 64 5f 6c 6f 6f 70 20 |BLT word_loop | 00000930 20 20 20 20 20 20 20 20 3b 20 69 66 20 73 6f 2c | ; if so,| 00000940 20 67 6f 20 74 6f 20 27 77 6f 72 6c 64 5f 6c 6f | go to 'world_lo| 00000950 6f 70 27 0d 03 7a 04 0d 03 84 41 20 20 20 20 20 |op'..z....A | 00000960 20 20 20 20 20 20 20 41 44 44 20 20 20 52 31 2c | ADD R1,| 00000970 52 31 32 2c 52 31 31 20 20 20 20 20 20 20 20 3b |R12,R11 ;| 00000980 20 72 31 3d 73 63 72 65 65 6e 2b 73 63 72 65 65 | r1=screen+scree| 00000990 6e 5f 6f 66 66 73 65 74 0d 03 8e 40 20 20 20 20 |n_offset...@ | 000009a0 20 20 20 20 20 20 20 20 53 54 52 20 20 20 52 31 | STR R1| 000009b0 2c 77 61 74 65 72 5f 70 6f 73 25 20 20 20 20 20 |,water_pos% | 000009c0 3b 20 73 74 6f 72 65 20 72 31 20 69 6e 20 77 61 |; store r1 in wa| 000009d0 74 65 72 5f 70 6f 73 25 0d 03 98 3f 20 20 20 20 |ter_pos%...? | 000009e0 20 20 20 20 20 20 20 20 53 55 42 20 20 20 52 30 | SUB R0| 000009f0 2c 52 31 2c 23 33 32 30 20 20 20 20 20 20 20 20 |,R1,#320 | 00000a00 3b 20 72 30 3d 61 64 64 72 20 6f 66 20 72 65 66 |; r0=addr of ref| 00000a10 6c 65 63 74 69 6f 6e 0d 03 a2 44 20 20 20 20 20 |lection...D | 00000a20 20 20 20 20 20 20 20 4d 4f 56 20 20 20 52 32 2c | MOV R2,| 00000a30 23 68 25 20 20 20 20 20 20 20 20 20 20 20 20 3b |#h% ;| 00000a40 20 72 32 3d 6e 75 6d 62 65 72 20 6f 66 20 72 6f | r2=number of ro| 00000a50 77 73 20 6f 66 20 77 61 74 65 72 0d 03 ac 44 20 |ws of water...D | 00000a60 20 20 20 20 20 20 20 20 20 20 20 4c 44 52 20 20 | LDR | 00000a70 20 52 31 31 2c 77 61 76 65 5f 70 6f 73 25 20 20 | R11,wave_pos% | 00000a80 20 20 20 3b 20 72 31 31 3d 70 6f 73 69 74 69 6f | ; r11=positio| 00000a90 6e 20 69 6e 20 77 61 76 65 20 74 61 62 6c 65 0d |n in wave table.| 00000aa0 03 b6 41 20 20 20 20 20 20 20 20 20 20 20 20 41 |..A A| 00000ab0 44 44 20 20 20 52 31 32 2c 52 31 31 2c 23 34 20 |DD R12,R11,#4 | 00000ac0 20 20 20 20 20 20 20 3b 20 69 6e 63 72 65 6d 65 | ; increme| 00000ad0 6e 74 20 70 6f 73 69 74 69 6f 6e 20 62 79 20 34 |nt position by 4| 00000ae0 0d 03 c0 43 20 20 20 20 20 20 20 20 20 20 20 20 |...C | 00000af0 43 4d 50 20 20 20 52 31 32 2c 23 28 68 25 2a 34 |CMP R12,#(h%*4| 00000b00 29 20 20 20 20 20 20 20 3b 20 69 66 20 69 74 20 |) ; if it | 00000b10 68 61 73 20 65 78 63 65 65 64 65 64 20 74 61 62 |has exceeded tab| 00000b20 6c 65 2c 0d 03 ca 3c 20 20 20 20 20 20 20 20 20 |le,...< | 00000b30 20 20 20 ec 51 20 52 31 32 2c 23 30 20 20 20 20 | .Q R12,#0 | 00000b40 20 20 20 20 20 20 20 20 3b 20 74 68 65 6e 20 72 | ; then r| 00000b50 65 73 65 74 20 69 74 20 74 6f 20 7a 65 72 6f 0d |eset it to zero.| 00000b60 03 d4 46 20 20 20 20 20 20 20 20 20 20 20 20 53 |..F S| 00000b70 54 52 20 20 20 52 31 32 2c 77 61 76 65 5f 70 6f |TR R12,wave_po| 00000b80 73 25 20 20 20 20 20 3b 20 73 74 6f 72 65 20 70 |s% ; store p| 00000b90 6f 73 69 74 69 6f 6e 20 69 6e 20 77 61 76 65 20 |osition in wave | 00000ba0 74 61 62 6c 65 0d 03 de 45 20 20 20 20 20 20 20 |table...E | 00000bb0 20 20 20 20 20 41 44 52 20 20 20 52 31 32 2c 74 | ADR R12,t| 00000bc0 61 62 6c 65 25 20 20 20 20 20 20 20 20 3b 20 72 |able% ; r| 00000bd0 31 32 3d 61 64 64 72 20 6f 66 20 77 61 76 65 20 |12=addr of wave | 00000be0 64 61 74 61 20 74 61 62 6c 65 0d 03 e8 44 20 20 |data table...D | 00000bf0 20 20 20 20 20 20 20 20 20 20 41 44 52 20 20 20 | ADR | 00000c00 52 31 34 2c 70 65 72 73 70 65 63 74 25 20 20 20 |R14,perspect% | 00000c10 20 20 3b 20 72 31 34 3d 70 65 72 73 70 65 63 74 | ; r14=perspect| 00000c20 69 76 65 20 74 61 62 6c 65 20 61 64 64 72 0d 03 |ive table addr..| 00000c30 f2 04 0d 03 fc 38 20 20 20 20 20 20 20 20 20 20 |.....8 | 00000c40 20 20 42 20 20 20 20 20 77 61 76 65 5f 31 20 20 | B wave_1 | 00000c50 20 20 20 20 20 20 20 20 20 20 3b 20 67 6f 20 74 | ; go t| 00000c60 6f 20 27 77 61 76 65 5f 31 27 0d 04 06 04 0d 04 |o 'wave_1'......| 00000c70 10 43 2e 74 61 62 6c 65 25 20 20 20 20 20 a4 61 |.C.table% .a| 00000c80 72 72 61 79 28 34 2a 68 25 29 20 20 20 20 20 20 |rray(4*h%) | 00000c90 20 20 20 20 20 3b 20 77 61 74 65 72 20 6d 6f 74 | ; water mot| 00000ca0 69 6f 6e 20 6f 66 66 73 65 74 73 20 74 61 62 6c |ion offsets tabl| 00000cb0 65 0d 04 1a 42 2e 70 65 72 73 70 65 63 74 25 20 |e...B.perspect% | 00000cc0 20 a4 61 72 72 61 79 28 34 2a 68 25 29 20 20 20 | .array(4*h%) | 00000cd0 20 20 20 20 20 20 20 20 3b 20 70 65 72 73 70 65 | ; perspe| 00000ce0 63 74 69 76 65 20 66 61 63 74 6f 72 73 20 74 61 |ctive factors ta| 00000cf0 62 6c 65 0d 04 24 04 0d 04 2e 38 2e 77 61 76 65 |ble..$....8.wave| 00000d00 5f 31 20 20 20 20 20 4c 44 52 20 20 20 52 34 2c |_1 LDR R4,| 00000d10 5b 52 31 32 2c 52 31 31 5d 20 20 20 20 20 20 3b |[R12,R11] ;| 00000d20 20 72 34 3d 77 61 76 65 20 68 65 69 67 68 74 0d | r4=wave height.| 00000d30 04 38 42 20 20 20 20 20 20 20 20 20 20 20 20 53 |.8B S| 00000d40 55 42 53 20 20 52 31 31 2c 52 31 31 2c 23 34 20 |UBS R11,R11,#4 | 00000d50 20 20 20 20 20 20 20 3b 20 6d 6f 76 65 20 77 61 | ; move wa| 00000d60 76 65 20 68 65 69 67 68 74 20 70 6f 69 6e 74 65 |ve height pointe| 00000d70 72 0d 04 42 25 20 20 20 20 20 20 20 20 20 20 20 |r..B% | 00000d80 20 4d 4f 56 4d 49 20 52 31 31 2c 23 28 28 68 25 | MOVMI R11,#((h%| 00000d90 2d 31 29 2a 34 29 0d 04 4c 40 20 20 20 20 20 20 |-1)*4)..L@ | 00000da0 20 20 20 20 20 20 4c 44 52 20 20 20 52 35 2c 5b | LDR R5,[| 00000db0 52 31 34 5d 2c 23 34 20 20 20 20 20 20 20 3b 20 |R14],#4 ; | 00000dc0 67 65 74 20 70 65 72 73 70 65 63 74 69 76 65 20 |get perspective | 00000dd0 66 61 63 74 6f 72 0d 04 56 36 20 20 20 20 20 20 |factor..V6 | 00000de0 20 20 20 20 20 20 43 4d 50 20 20 20 52 35 2c 23 | CMP R5,#| 00000df0 30 20 20 20 20 20 20 20 20 20 20 20 20 20 3b 20 |0 ; | 00000e00 69 73 20 69 74 20 7a 65 72 6f 20 3f 0d 04 60 3d |is it zero ?..`=| 00000e10 20 20 20 20 20 20 20 20 20 20 20 20 42 45 51 20 | BEQ | 00000e20 20 20 7a 65 72 6f 20 20 20 20 20 20 20 20 20 20 | zero | 00000e30 20 20 20 20 3b 20 69 66 20 73 6f 2c 20 67 6f 20 | ; if so, go | 00000e40 74 6f 20 27 7a 65 72 6f 27 0d 04 6a 44 20 20 20 |to 'zero'..jD | 00000e50 20 20 20 20 20 20 20 20 20 4d 55 4c 20 20 20 52 | MUL R| 00000e60 36 2c 52 34 2c 52 35 20 20 20 20 20 20 20 20 20 |6,R4,R5 | 00000e70 20 3b 20 72 36 3d 77 61 76 65 5f 68 65 69 67 68 | ; r6=wave_heigh| 00000e80 74 2a 70 65 72 73 70 65 63 74 69 76 65 0d 04 74 |t*perspective..t| 00000e90 34 20 20 20 20 20 20 20 20 20 20 20 20 4d 4f 56 |4 MOV| 00000ea0 20 20 20 52 36 2c 52 36 2c 41 53 52 23 32 30 20 | R6,R6,ASR#20 | 00000eb0 20 20 20 20 20 3b 20 72 36 3d 72 36 3e 3e 3e 32 | ; r6=r6>>>2| 00000ec0 30 0d 04 7e 40 20 20 20 20 20 20 20 20 20 20 20 |0..~@ | 00000ed0 20 43 4d 50 20 20 20 52 36 2c 23 30 20 20 20 20 | CMP R6,#0 | 00000ee0 20 20 20 20 20 20 20 20 20 3b 20 69 73 20 77 61 | ; is wa| 00000ef0 76 65 5f 68 65 69 67 68 74 20 28 72 36 29 20 3c |ve_height (r6) <| 00000f00 30 0d 04 88 38 20 20 20 20 20 20 20 20 20 20 20 |0...8 | 00000f10 20 41 44 44 4c 54 20 52 36 2c 52 36 2c 23 31 20 | ADDLT R6,R6,#1 | 00000f20 20 20 20 20 20 20 20 20 20 3b 20 69 66 20 73 6f | ; if so| 00000f30 2c 20 72 36 3d 72 36 2b 31 0d 04 92 44 20 20 20 |, r6=r6+1...D | 00000f40 20 20 20 20 20 20 20 20 20 4c 44 52 20 20 20 52 | LDR R| 00000f50 31 2c 77 61 74 65 72 5f 70 6f 73 25 20 20 20 20 |1,water_pos% | 00000f60 20 3b 20 72 31 3d 73 63 72 65 65 6e 20 6f 66 66 | ; r1=screen off| 00000f70 73 65 74 20 66 6f 72 20 77 61 74 65 72 0d 04 9c |set for water...| 00000f80 41 20 20 20 20 20 20 20 20 20 20 20 20 41 44 44 |A ADD| 00000f90 20 20 20 52 31 2c 52 31 2c 52 36 2c 4c 53 4c 23 | R1,R1,R6,LSL#| 00000fa0 36 20 20 20 20 3b 20 72 31 3d 72 31 2b 28 77 61 |6 ; r1=r1+(wa| 00000fb0 76 65 5f 68 65 69 67 68 74 2a 33 32 30 29 0d 04 |ve_height*320)..| 00000fc0 a6 24 20 20 20 20 20 20 20 20 20 20 20 20 41 44 |.$ AD| 00000fd0 44 20 20 20 52 31 2c 52 31 2c 52 36 2c 4c 53 4c |D R1,R1,R6,LSL| 00000fe0 23 38 0d 04 b0 43 20 20 20 20 20 20 20 20 20 20 |#8...C | 00000ff0 20 20 4c 44 52 20 20 20 52 33 2c 6d 61 78 5f 73 | LDR R3,max_s| 00001000 63 72 25 20 20 20 20 20 20 20 3b 20 72 33 3d 6d |cr% ; r3=m| 00001010 61 78 69 6d 75 6d 20 73 63 72 65 65 6e 20 61 64 |aximum screen ad| 00001020 64 72 65 73 73 0d 04 ba 3f 20 20 20 20 20 20 20 |dress...? | 00001030 20 20 20 20 20 43 4d 50 20 20 20 52 31 2c 52 33 | CMP R1,R3| 00001040 20 20 20 20 20 20 20 20 20 20 20 20 20 3b 20 64 | ; d| 00001050 6f 65 73 20 72 31 20 65 78 63 65 65 64 20 74 68 |oes r1 exceed th| 00001060 69 73 20 3f 0d 04 c4 35 20 20 20 20 20 20 20 20 |is ?...5 | 00001070 20 20 20 20 42 47 45 20 20 20 65 78 69 74 20 20 | BGE exit | 00001080 20 20 20 20 20 20 20 20 20 20 20 20 3b 20 69 66 | ; if| 00001090 20 73 6f 2c 20 65 78 69 74 0d 04 ce 36 20 20 20 | so, exit...6 | 000010a0 20 20 20 20 20 20 20 20 20 42 20 20 20 20 20 73 | B s| 000010b0 6b 69 70 20 20 20 20 20 20 20 20 20 20 20 20 20 |kip | 000010c0 20 3b 20 67 6f 20 74 6f 20 27 73 6b 69 70 27 0d | ; go to 'skip'.| 000010d0 04 d8 04 0d 04 e2 3c 2e 7a 65 72 6f 20 20 20 20 |......<.zero | 000010e0 20 20 20 4c 44 52 20 20 20 52 31 2c 6f 66 66 73 | LDR R1,offs| 000010f0 65 74 25 20 20 20 20 20 20 20 20 3b 20 77 68 65 |et% ; whe| 00001100 6e 20 77 61 76 65 5f 68 65 69 67 68 74 3d 30 0d |n wave_height=0.| 00001110 04 ec 20 20 20 20 20 20 20 20 20 20 20 20 20 4c |.. L| 00001120 44 52 20 20 20 52 33 2c 73 63 72 65 65 6e 25 0d |DR R3,screen%.| 00001130 04 f6 42 20 20 20 20 20 20 20 20 20 20 20 20 41 |..B A| 00001140 44 44 20 20 20 52 31 2c 52 31 2c 52 33 20 20 20 |DD R1,R1,R3 | 00001150 20 20 20 20 20 20 20 3b 20 72 31 3d 73 63 72 65 | ; r1=scre| 00001160 65 6e 5f 61 64 64 72 65 73 73 2b 6f 66 66 73 65 |en_address+offse| 00001170 74 0d 05 00 04 0d 05 0a 42 2e 73 6b 69 70 20 20 |t.......B.skip | 00001180 20 20 20 20 20 53 54 52 20 20 20 52 31 31 2c 74 | STR R11,t| 00001190 65 6d 70 5f 77 61 76 65 25 20 20 20 20 3b 20 73 |emp_wave% ; s| 000011a0 74 6f 72 65 20 77 61 76 65 20 74 61 62 6c 65 20 |tore wave table | 000011b0 70 6f 69 6e 74 65 72 0d 05 14 3c 20 20 20 20 20 |pointer...< | 000011c0 20 20 20 20 20 20 20 4c 44 52 20 20 20 52 31 31 | LDR R11| 000011d0 2c 6f 72 72 5f 77 6f 72 64 25 20 20 20 20 20 3b |,orr_word% ;| 000011e0 20 72 31 31 3d 62 79 74 65 20 84 69 6e 67 20 77 | r11=byte .ing w| 000011f0 6f 72 64 0d 05 1e 10 20 20 20 20 20 20 20 20 20 |ord.... | 00001200 20 20 20 0d 05 28 11 20 20 20 20 20 20 20 20 20 | ..(. | 00001210 20 20 20 5d 0d 05 32 20 20 20 20 20 20 20 20 20 | ]..2 | 00001220 20 20 20 20 e3 20 6c 6f 6f 70 25 20 3d 20 31 20 | . loop% = 1 | 00001230 b8 20 31 30 0d 05 3c 1c 20 20 20 20 20 20 20 20 |. 10..<. | 00001240 20 20 20 20 20 20 5b 4f 50 54 20 70 61 73 73 25 | [OPT pass%| 00001250 0d 05 46 12 20 20 20 20 20 20 20 20 20 20 20 20 |..F. | 00001260 20 20 0d 05 50 39 20 20 20 20 20 20 20 20 20 20 | ..P9 | 00001270 20 20 4c 44 4d 49 41 20 52 30 21 2c 7b 52 33 2d | LDMIA R0!,{R3-| 00001280 52 31 30 7d 20 20 20 20 20 20 3b 20 67 65 74 20 |R10} ; get | 00001290 73 63 72 65 65 6e 20 64 61 74 61 0d 05 5a 3f 20 |screen data..Z? | 000012a0 20 20 20 20 20 20 20 20 20 20 20 84 52 20 20 20 | .R | 000012b0 52 33 2c 52 33 2c 52 31 31 20 20 20 20 20 20 20 |R3,R3,R11 | 000012c0 20 20 3b 20 73 65 74 20 62 6c 75 65 20 62 69 74 | ; set blue bit| 000012d0 73 20 69 6e 20 77 6f 72 64 73 0d 05 64 1e 20 20 |s in words..d. | 000012e0 20 20 20 20 20 20 20 20 20 20 84 52 20 20 20 52 | .R R| 000012f0 34 2c 52 34 2c 52 31 31 0d 05 6e 1e 20 20 20 20 |4,R4,R11..n. | 00001300 20 20 20 20 20 20 20 20 84 52 20 20 20 52 35 2c | .R R5,| 00001310 52 35 2c 52 31 31 0d 05 78 1e 20 20 20 20 20 20 |R5,R11..x. | 00001320 20 20 20 20 20 20 84 52 20 20 20 52 36 2c 52 36 | .R R6,R6| 00001330 2c 52 31 31 0d 05 82 1e 20 20 20 20 20 20 20 20 |,R11.... | 00001340 20 20 20 20 84 52 20 20 20 52 37 2c 52 37 2c 52 | .R R7,R7,R| 00001350 31 31 0d 05 8c 1e 20 20 20 20 20 20 20 20 20 20 |11.... | 00001360 20 20 84 52 20 20 20 52 38 2c 52 38 2c 52 31 31 | .R R8,R8,R11| 00001370 0d 05 96 1e 20 20 20 20 20 20 20 20 20 20 20 20 |.... | 00001380 84 52 20 20 20 52 39 2c 52 39 2c 52 31 31 0d 05 |.R R9,R9,R11..| 00001390 a0 20 20 20 20 20 20 20 20 20 20 20 20 20 84 52 |. .R| 000013a0 20 20 20 52 31 30 2c 52 31 30 2c 52 31 31 0d 05 | R10,R10,R11..| 000013b0 aa 39 20 20 20 20 20 20 20 20 20 20 20 20 53 54 |.9 ST| 000013c0 4d 49 41 20 52 31 21 2c 7b 52 33 2d 52 31 30 7d |MIA R1!,{R3-R10}| 000013d0 20 20 20 20 20 20 3b 20 70 6c 6f 74 20 72 65 66 | ; plot ref| 000013e0 6c 65 63 74 69 6f 6e 0d 05 b4 10 20 20 20 20 20 |lection.... | 000013f0 20 20 20 20 20 20 20 0d 05 be 13 20 20 20 20 20 | .... | 00001400 20 20 20 20 20 20 20 20 20 5d 0d 05 c8 11 20 20 | ].... | 00001410 20 20 20 20 20 20 20 20 20 20 ed 0d 05 d2 1a 20 | ..... | 00001420 20 20 20 20 20 20 20 20 20 20 20 5b 4f 50 54 20 | [OPT | 00001430 70 61 73 73 25 0d 05 dc 10 20 20 20 20 20 20 20 |pass%.... | 00001440 20 20 20 20 20 0d 05 e6 3f 20 20 20 20 20 20 20 | ...? | 00001450 20 20 20 20 20 4c 44 52 20 20 20 52 31 31 2c 74 | LDR R11,t| 00001460 65 6d 70 5f 77 61 76 65 25 20 20 20 20 3b 20 67 |emp_wave% ; g| 00001470 65 74 20 77 61 76 65 20 70 6f 69 6e 74 65 72 20 |et wave pointer | 00001480 62 61 63 6b 0d 05 f0 42 20 20 20 20 20 20 20 20 |back...B | 00001490 20 20 20 20 53 55 42 20 20 20 52 30 2c 52 30 2c | SUB R0,R0,| 000014a0 23 39 36 30 20 20 20 20 20 20 20 20 3b 20 73 63 |#960 ; sc| 000014b0 72 65 65 6e 5f 70 6f 73 69 74 69 6f 6e 2d 3d 33 |reen_position-=3| 000014c0 20 6c 69 6e 65 73 0d 05 fa 3b 20 20 20 20 20 20 | lines...; | 000014d0 20 20 20 20 20 20 4c 44 52 20 20 20 52 31 2c 77 | LDR R1,w| 000014e0 61 74 65 72 5f 70 6f 73 25 20 20 20 20 20 3b 20 |ater_pos% ; | 000014f0 72 31 3d 77 61 74 65 72 5f 70 6f 73 69 74 69 6f |r1=water_positio| 00001500 6e 0d 06 04 41 20 20 20 20 20 20 20 20 20 20 20 |n...A | 00001510 20 41 44 44 20 20 20 52 31 2c 52 31 2c 23 33 32 | ADD R1,R1,#32| 00001520 30 20 20 20 20 20 20 20 20 3b 20 61 64 64 20 6f |0 ; add o| 00001530 66 66 73 65 74 20 74 6f 20 6e 65 78 74 20 6c 69 |ffset to next li| 00001540 6e 65 0d 06 0e 3e 20 20 20 20 20 20 20 20 20 20 |ne...> | 00001550 20 20 53 54 52 20 20 20 52 31 2c 77 61 74 65 72 | STR R1,water| 00001560 5f 70 6f 73 25 20 20 20 20 20 3b 20 73 74 6f 72 |_pos% ; stor| 00001570 65 20 77 61 74 65 72 5f 70 6f 73 69 74 69 6f 6e |e water_position| 00001580 0d 06 18 38 20 20 20 20 20 20 20 20 20 20 20 20 |...8 | 00001590 53 55 42 53 20 20 52 32 2c 52 32 2c 23 31 20 20 |SUBS R2,R2,#1 | 000015a0 20 20 20 20 20 20 20 20 3b 20 61 6e 6f 74 68 65 | ; anothe| 000015b0 72 20 6c 69 6e 65 20 3f 0d 06 22 3f 20 20 20 20 |r line ?.."? | 000015c0 20 20 20 20 20 20 20 20 42 4e 45 20 20 20 77 61 | BNE wa| 000015d0 76 65 5f 31 20 20 20 20 20 20 20 20 20 20 20 20 |ve_1 | 000015e0 3b 20 69 66 20 73 6f 2c 20 67 6f 20 74 6f 20 27 |; if so, go to '| 000015f0 77 61 76 65 5f 31 27 0d 06 2c 04 0d 06 36 3c 2e |wave_1'..,...6<.| 00001600 65 78 69 74 20 20 20 20 20 20 20 4c 44 52 20 20 |exit LDR | 00001610 20 52 31 32 2c 73 63 72 65 65 6e 25 20 20 20 20 | R12,screen% | 00001620 20 20 20 3b 20 72 31 32 3d 73 63 72 65 65 6e 20 | ; r12=screen | 00001630 61 64 64 72 65 73 73 0d 06 40 42 20 20 20 20 20 |address..@B | 00001640 20 20 20 20 20 20 20 4c 44 52 20 20 20 52 30 2c | LDR R0,| 00001650 6f 66 66 73 65 74 25 20 20 20 20 20 20 20 20 3b |offset% ;| 00001660 20 20 72 30 3d 77 61 74 65 72 20 61 64 64 72 65 | r0=water addre| 00001670 73 73 20 6f 66 66 73 65 74 0d 06 4a 34 20 20 20 |ss offset..J4 | 00001680 20 20 20 20 20 20 20 20 20 41 44 44 20 20 20 52 | ADD R| 00001690 30 2c 52 30 2c 52 31 32 20 20 20 20 20 20 20 20 |0,R0,R12 | 000016a0 20 3b 20 20 72 30 3d 72 30 2b 72 31 32 0d 06 54 | ; r0=r0+r12..T| 000016b0 44 20 20 20 20 20 20 20 20 20 20 20 20 4c 44 52 |D LDR| 000016c0 20 20 20 52 32 2c 6d 61 78 5f 73 63 72 25 20 20 | R2,max_scr% | 000016d0 20 20 20 20 20 3b 20 20 72 32 3d 6d 61 78 69 6d | ; r2=maxim| 000016e0 75 6d 20 73 63 72 65 65 6e 20 61 64 64 72 65 73 |um screen addres| 000016f0 73 0d 06 5e 42 2e 66 69 6c 6c 5f 6c 6f 6f 70 20 |s..^B.fill_loop | 00001700 20 4c 44 52 20 20 20 52 33 2c 5b 52 30 5d 20 20 | LDR R3,[R0] | 00001710 20 20 20 20 20 20 20 20 20 3b 20 67 65 74 20 77 | ; get w| 00001720 6f 72 64 20 61 74 20 6c 65 66 74 20 6f 66 20 6c |ord at left of l| 00001730 69 6e 65 0d 06 68 45 20 20 20 20 20 20 20 20 20 |ine..hE | 00001740 20 20 20 43 4d 50 20 20 20 52 33 2c 23 30 20 20 | CMP R3,#0 | 00001750 20 20 20 20 20 20 20 20 20 20 20 3b 20 69 73 20 | ; is | 00001760 69 74 20 62 6c 61 63 6b 20 28 61 6e 20 65 6d 70 |it black (an emp| 00001770 74 79 20 6c 69 6e 65 29 0d 06 72 43 20 20 20 20 |ty line)..rC | 00001780 20 20 20 20 20 20 20 20 42 4e 45 20 20 20 6d 6f | BNE mo| 00001790 76 65 5f 66 69 6c 6c 20 20 20 20 20 20 20 20 20 |ve_fill | 000017a0 3b 20 69 66 20 6e 6f 74 2c 20 67 6f 20 74 6f 20 |; if not, go to | 000017b0 27 6d 6f 76 65 5f 66 69 6c 6c 27 0d 06 7c 44 20 |'move_fill'..|D | 000017c0 20 20 20 20 20 20 20 20 20 20 20 53 55 42 20 20 | SUB | 000017d0 20 52 31 2c 52 30 2c 23 33 32 30 20 20 20 20 20 | R1,R0,#320 | 000017e0 20 20 20 3b 20 72 31 3d 61 64 64 72 65 73 73 20 | ; r1=address | 000017f0 6f 66 20 6c 69 6e 65 20 74 6f 20 63 6f 70 79 0d |of line to copy.| 00001800 06 86 10 20 20 20 20 20 20 20 20 20 20 20 20 0d |... .| 00001810 06 90 11 20 20 20 20 20 20 20 20 20 20 20 20 5d |... ]| 00001820 0d 06 9a 20 20 20 20 20 20 20 20 20 20 20 20 20 |... | 00001830 e3 20 6c 6f 6f 70 25 20 3d 20 31 20 b8 20 31 30 |. loop% = 1 . 10| 00001840 0d 06 a4 1c 20 20 20 20 20 20 20 20 20 20 20 20 |.... | 00001850 20 20 5b 4f 50 54 20 70 61 73 73 25 0d 06 ae 12 | [OPT pass%....| 00001860 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 06 | ..| 00001870 b8 40 20 20 20 20 20 20 20 20 20 20 20 20 4c 44 |.@ LD| 00001880 4d 49 41 20 52 31 21 2c 7b 52 33 2d 52 31 30 7d |MIA R1!,{R3-R10}| 00001890 20 20 20 20 20 20 3b 20 67 65 74 20 64 61 74 61 | ; get data| 000018a0 20 6f 66 20 6c 69 6e 65 20 61 62 6f 76 65 0d 06 | of line above..| 000018b0 c2 40 20 20 20 20 20 20 20 20 20 20 20 20 53 54 |.@ ST| 000018c0 4d 49 41 20 52 30 21 2c 7b 52 33 2d 52 31 30 7d |MIA R0!,{R3-R10}| 000018d0 20 20 20 20 20 20 3b 20 73 74 6f 72 65 20 69 74 | ; store it| 000018e0 20 69 6e 20 65 6d 70 74 79 20 6c 69 6e 65 0d 06 | in empty line..| 000018f0 cc 10 20 20 20 20 20 20 20 20 20 20 20 20 0d 06 |.. ..| 00001900 d6 13 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |.. | 00001910 5d 0d 06 e0 11 20 20 20 20 20 20 20 20 20 20 20 |].... | 00001920 20 ed 0d 06 ea 1a 20 20 20 20 20 20 20 20 20 20 | ..... | 00001930 20 20 5b 4f 50 54 20 70 61 73 73 25 0d 06 f4 10 | [OPT pass%....| 00001940 20 20 20 20 20 20 20 20 20 20 20 20 0d 06 fe 3c | ...<| 00001950 20 20 20 20 20 20 20 20 20 20 20 20 42 20 20 20 | B | 00001960 20 20 65 6e 64 5f 66 69 6c 6c 20 20 20 20 20 20 | end_fill | 00001970 20 20 20 20 3b 20 6a 75 6d 70 20 74 6f 20 27 65 | ; jump to 'e| 00001980 6e 64 5f 66 69 6c 6c 27 0d 07 08 45 2e 6d 6f 76 |nd_fill'...E.mov| 00001990 65 5f 66 69 6c 6c 20 20 41 44 44 20 20 20 52 30 |e_fill ADD R0| 000019a0 2c 52 30 2c 23 33 32 30 20 20 20 20 20 20 20 20 |,R0,#320 | 000019b0 3b 20 69 66 20 6e 6f 74 20 62 6c 61 63 6b 20 67 |; if not black g| 000019c0 6f 74 6f 20 6e 65 78 74 20 6c 69 6e 65 0d 07 12 |oto next line...| 000019d0 42 2e 65 6e 64 5f 66 69 6c 6c 20 20 20 43 4d 50 |B.end_fill CMP| 000019e0 20 20 20 52 30 2c 52 32 20 20 20 20 20 20 20 20 | R0,R2 | 000019f0 20 20 20 20 20 3b 20 69 73 20 73 63 72 5f 61 64 | ; is scr_ad| 00001a00 64 72 20 3c 20 6d 61 78 5f 61 64 64 72 20 3f 0d |dr < max_addr ?.| 00001a10 07 1c 42 20 20 20 20 20 20 20 20 20 20 20 20 42 |..B B| 00001a20 4c 54 20 20 20 66 69 6c 6c 5f 6c 6f 6f 70 20 20 |LT fill_loop | 00001a30 20 20 20 20 20 20 20 3b 20 69 66 20 73 6f 2c 20 | ; if so, | 00001a40 67 6f 20 74 6f 20 27 66 69 6c 6c 5f 6c 6f 6f 70 |go to 'fill_loop| 00001a50 27 0d 07 26 04 0d 07 30 2e 2e 77 61 76 65 5f 65 |'..&...0..wave_e| 00001a60 6e 64 20 20 20 4c 44 4d 46 44 20 52 31 33 21 2c |nd LDMFD R13!,| 00001a70 7b 52 30 2d 52 31 31 2c 50 43 7d 20 20 3b 20 65 |{R0-R11,PC} ; e| 00001a80 78 69 74 0d 07 3a 04 0d 07 44 04 0d 07 4e 1e 2e |xit..:...D...N..| 00001a90 76 61 72 25 20 20 20 20 20 20 20 45 51 55 44 20 |var% EQUD | 00001aa0 20 73 74 61 72 74 5f 79 25 0d 07 58 17 2e 77 61 | start_y%..X..wa| 00001ab0 74 65 72 5f 70 6f 73 25 20 45 51 55 44 20 20 30 |ter_pos% EQUD 0| 00001ac0 0d 07 62 17 2e 74 65 6d 70 5f 77 61 76 65 25 20 |..b..temp_wave% | 00001ad0 45 51 55 44 20 20 30 0d 07 6c 17 2e 73 63 72 65 |EQUD 0..l..scre| 00001ae0 65 6e 25 20 20 20 20 45 51 55 44 20 20 30 0d 07 |en% EQUD 0..| 00001af0 76 1c 2e 6f 66 66 73 65 74 25 20 20 20 20 45 51 |v..offset% EQ| 00001b00 55 44 20 20 79 25 2a 33 32 30 0d 07 80 17 2e 6d |UD y%*320.....m| 00001b10 61 78 5f 73 63 72 25 20 20 20 45 51 55 44 20 20 |ax_scr% EQUD | 00001b20 30 0d 07 8a 17 2e 77 61 76 65 5f 70 6f 73 25 20 |0.....wave_pos% | 00001b30 20 45 51 55 44 20 20 30 0d 07 94 46 2e 6f 72 72 | EQUD 0...F.orr| 00001b40 5f 77 6f 72 64 25 20 20 45 51 55 44 20 20 6f 72 |_word% EQUD or| 00001b50 72 25 20 2b 20 28 6f 72 72 25 2a 31 3c 3c 38 29 |r% + (orr%*1<<8)| 00001b60 20 2b 20 28 6f 72 72 25 2a 31 3c 3c 31 36 29 20 | + (orr%*1<<16) | 00001b70 2b 20 28 6f 72 72 25 2a 31 3c 3c 32 34 29 0d 07 |+ (orr%*1<<24)..| 00001b80 9e 04 0d 07 a8 04 0d 07 b2 09 20 20 20 20 5d 0d |.......... ].| 00001b90 07 bc 07 20 20 ed 0d 07 c6 05 e1 0d 07 d0 04 0d |... ...........| 00001ba0 07 da 04 0d 07 e4 04 0d 07 ee 13 dd 20 a4 61 72 |............ .ar| 00001bb0 72 61 79 28 73 69 7a 65 25 29 0d 07 f8 11 20 20 |ray(size%).... | 00001bc0 50 25 20 2b 3d 20 73 69 7a 65 25 0d 08 02 07 3d |P% += size%....=| 00001bd0 20 30 0d 08 0c 04 0d 08 16 04 0d 08 20 04 0d 08 | 0.......... ...| 00001be0 2a 0b dd 20 f2 69 6e 69 74 0d 08 34 0a 20 20 ea |*.. .init..4. .| 00001bf0 20 49 25 0d 08 3e 04 0d 08 48 19 20 20 e3 20 49 | I%..>...H. . I| 00001c00 25 20 3d 20 30 20 b8 20 28 68 25 20 2d 20 31 29 |% = 0 . (h% - 1)| 00001c10 0d 08 52 38 20 20 20 20 74 61 62 6c 65 25 21 28 |..R8 table%!(| 00001c20 49 25 2a 34 29 20 3d 20 28 68 25 2f 31 30 29 20 |I%*4) = (h%/10) | 00001c30 2a 20 b5 b2 28 49 25 20 2a 20 28 33 36 30 2f 28 |* ..(I% * (360/(| 00001c40 68 25 2f 32 29 29 20 29 0d 08 5c 07 20 20 ed 0d |h%/2)) )..\. ..| 00001c50 08 66 04 0d 08 70 19 20 20 e3 20 49 25 20 3d 20 |.f...p. . I% = | 00001c60 30 20 b8 20 28 68 25 20 2d 20 31 29 0d 08 7a 34 |0 . (h% - 1)..z4| 00001c70 20 20 20 20 70 65 72 73 70 65 63 74 25 21 28 49 | perspect%!(I| 00001c80 25 2a 34 29 20 3d 20 28 49 25 20 2f 20 28 68 25 |%*4) = (I% / (h%| 00001c90 2d 31 29 29 20 2a 20 28 31 20 3c 3c 20 32 30 29 |-1)) * (1 << 20)| 00001ca0 0d 08 84 07 20 20 ed 0d 08 8e 04 0d 08 98 05 e1 |.... ..........| 00001cb0 0d ff |..| 00001cb2