Home » Archimedes archive » Acorn User » AU 1997-05 B.adf » Regulars » StarInfo/clouds/Brown/s/satcode
StarInfo/clouds/Brown/s/satcode
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 1997-05 B.adf » Regulars |
| Filename: | StarInfo/clouds/Brown/s/satcode |
| Read OK: | ✔ |
| File size: | 05E1 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
OS_WriteC EQU &0
OS_Byte EQU &6
OS_File EQU &8
OS_Mouse EQU &1C
OS_ReadVduVariables EQU &31
OS_ReadMonotonicTime EQU &42
; some things which really should be defined as constants
screen_width EQU 320
shift_1 EQU 8
shift_2 EQU 6
AREA |satinfo$$data|, DATA
sat_getscreenbaseinfo
DCD 0
DCD 0
DCD 0
DCD 0
AREA |satcode$$code|, CODE, READONLY
EXPORT sat_screenmode
EXPORT sat_getscreenbase
EXPORT sat_loadfile
EXPORT sat_savefile
EXPORT sat_mouseop
EXPORT sat_timeop
sat_loadfile
stmfd sp!,{r4,r5,lr}
mov r2,r1
mov r1,r0
mov r0,#16
mov r3,#0
swi OS_File
ldmfd sp!,{r4,r5,pc}
sat_savefile
stmfd sp!,{r4,r5,r6,lr}
mov r6,r2
mov r5,r1
mov r4,r0
mov r0,#10 ; reason code (save)
mov r1,r4 ; *name (r0 on entry)
mov r2,#&FF0
orr r2,r2,#&00D ; just to get &FFD into a reg!
mov r4,r5 ; start address (r1 on entry)
add r5,r4,r6 ; size (r2 on entry)
swi OS_File
ldmfd sp!,{r4,r5,r6,pc}
sat_screenmode
mov r1,r0
mov r0,#22
swi OS_WriteC
mov r0,r1
swi OS_WriteC
movs pc,lr
sat_getscreenbase
adrl r0,sat_getscreenbaseinfo
mov r1,#149 ; hardware screen start
mvn r2,#0 ; NOT -1
stmia r0,{r1,r2}
mov r1,r0
swi OS_ReadVduVariables
ldr r0,[r0] ; eech, but apparently ok
movs pc,lr
; r0 - &x
; r1 - &y
; r2 - &button
sat_mouseop
stmfd sp!,{r4-r6,lr}
mov r4,r0
mov r5,r1
mov r6,r2
swi OS_Mouse
str r0,[r4]
str r1,[r5]
str r2,[r6]
ldmfd sp!,{r4-r6,pc}
; exit r0 - time in cs
sat_timeop
swi OS_ReadMonotonicTime
movs pc,r14
END
00000000 0a 4f 53 5f 57 72 69 74 65 43 09 09 45 51 55 09 |.OS_WriteC..EQU.|
00000010 26 30 0a 4f 53 5f 42 79 74 65 09 09 09 45 51 55 |&0.OS_Byte...EQU|
00000020 09 26 36 0a 4f 53 5f 46 69 6c 65 09 09 09 45 51 |.&6.OS_File...EQ|
00000030 55 09 26 38 0a 4f 53 5f 4d 6f 75 73 65 09 09 45 |U.&8.OS_Mouse..E|
00000040 51 55 09 26 31 43 0a 4f 53 5f 52 65 61 64 56 64 |QU.&1C.OS_ReadVd|
00000050 75 56 61 72 69 61 62 6c 65 73 09 45 51 55 09 26 |uVariables.EQU.&|
00000060 33 31 0a 4f 53 5f 52 65 61 64 4d 6f 6e 6f 74 6f |31.OS_ReadMonoto|
00000070 6e 69 63 54 69 6d 65 09 45 51 55 09 26 34 32 0a |nicTime.EQU.&42.|
00000080 0a 3b 20 73 6f 6d 65 20 74 68 69 6e 67 73 20 77 |.; some things w|
00000090 68 69 63 68 20 72 65 61 6c 6c 79 20 73 68 6f 75 |hich really shou|
000000a0 6c 64 20 62 65 20 64 65 66 69 6e 65 64 20 61 73 |ld be defined as|
000000b0 20 63 6f 6e 73 74 61 6e 74 73 0a 73 63 72 65 65 | constants.scree|
000000c0 6e 5f 77 69 64 74 68 09 09 45 51 55 09 33 32 30 |n_width..EQU.320|
000000d0 0a 73 68 69 66 74 5f 31 09 09 09 45 51 55 09 38 |.shift_1...EQU.8|
000000e0 0a 73 68 69 66 74 5f 32 09 09 09 45 51 55 09 36 |.shift_2...EQU.6|
000000f0 0a 0a 0a 09 41 52 45 41 20 7c 73 61 74 69 6e 66 |....AREA |satinf|
00000100 6f 24 24 64 61 74 61 7c 2c 20 44 41 54 41 0a 0a |o$$data|, DATA..|
00000110 73 61 74 5f 67 65 74 73 63 72 65 65 6e 62 61 73 |sat_getscreenbas|
00000120 65 69 6e 66 6f 0a 09 44 43 44 20 30 0a 09 44 43 |einfo..DCD 0..DC|
00000130 44 20 30 0a 09 44 43 44 20 30 0a 09 44 43 44 20 |D 0..DCD 0..DCD |
00000140 30 0a 0a 0a 09 41 52 45 41 20 7c 73 61 74 63 6f |0....AREA |satco|
00000150 64 65 24 24 63 6f 64 65 7c 2c 20 43 4f 44 45 2c |de$$code|, CODE,|
00000160 20 52 45 41 44 4f 4e 4c 59 0a 0a 09 45 58 50 4f | READONLY...EXPO|
00000170 52 54 20 73 61 74 5f 73 63 72 65 65 6e 6d 6f 64 |RT sat_screenmod|
00000180 65 0a 09 45 58 50 4f 52 54 20 73 61 74 5f 67 65 |e..EXPORT sat_ge|
00000190 74 73 63 72 65 65 6e 62 61 73 65 0a 09 45 58 50 |tscreenbase..EXP|
000001a0 4f 52 54 20 73 61 74 5f 6c 6f 61 64 66 69 6c 65 |ORT sat_loadfile|
000001b0 0a 09 45 58 50 4f 52 54 20 73 61 74 5f 73 61 76 |..EXPORT sat_sav|
000001c0 65 66 69 6c 65 0a 09 45 58 50 4f 52 54 20 73 61 |efile..EXPORT sa|
000001d0 74 5f 6d 6f 75 73 65 6f 70 0a 09 45 58 50 4f 52 |t_mouseop..EXPOR|
000001e0 54 20 73 61 74 5f 74 69 6d 65 6f 70 0a 0a 0a 0a |T sat_timeop....|
000001f0 73 61 74 5f 6c 6f 61 64 66 69 6c 65 0a 09 73 74 |sat_loadfile..st|
00000200 6d 66 64 20 73 70 21 2c 7b 72 34 2c 72 35 2c 6c |mfd sp!,{r4,r5,l|
00000210 72 7d 0a 09 6d 6f 76 20 72 32 2c 72 31 0a 09 6d |r}..mov r2,r1..m|
00000220 6f 76 20 72 31 2c 72 30 0a 09 6d 6f 76 20 72 30 |ov r1,r0..mov r0|
00000230 2c 23 31 36 0a 09 6d 6f 76 20 72 33 2c 23 30 0a |,#16..mov r3,#0.|
00000240 09 73 77 69 20 4f 53 5f 46 69 6c 65 0a 09 6c 64 |.swi OS_File..ld|
00000250 6d 66 64 20 73 70 21 2c 7b 72 34 2c 72 35 2c 70 |mfd sp!,{r4,r5,p|
00000260 63 7d 0a 0a 0a 0a 73 61 74 5f 73 61 76 65 66 69 |c}....sat_savefi|
00000270 6c 65 0a 09 73 74 6d 66 64 20 73 70 21 2c 7b 72 |le..stmfd sp!,{r|
00000280 34 2c 72 35 2c 72 36 2c 6c 72 7d 0a 09 6d 6f 76 |4,r5,r6,lr}..mov|
00000290 20 72 36 2c 72 32 0a 09 6d 6f 76 20 72 35 2c 72 | r6,r2..mov r5,r|
000002a0 31 0a 09 6d 6f 76 20 72 34 2c 72 30 0a 09 6d 6f |1..mov r4,r0..mo|
000002b0 76 20 72 30 2c 23 31 30 09 09 3b 20 72 65 61 73 |v r0,#10..; reas|
000002c0 6f 6e 20 63 6f 64 65 20 28 73 61 76 65 29 0a 09 |on code (save)..|
000002d0 6d 6f 76 20 72 31 2c 72 34 09 09 3b 20 2a 6e 61 |mov r1,r4..; *na|
000002e0 6d 65 20 28 72 30 20 6f 6e 20 65 6e 74 72 79 29 |me (r0 on entry)|
000002f0 0a 09 6d 6f 76 20 72 32 2c 23 26 46 46 30 0a 09 |..mov r2,#&FF0..|
00000300 6f 72 72 20 72 32 2c 72 32 2c 23 26 30 30 44 09 |orr r2,r2,#&00D.|
00000310 09 3b 20 6a 75 73 74 20 74 6f 20 67 65 74 20 26 |.; just to get &|
00000320 46 46 44 20 69 6e 74 6f 20 61 20 72 65 67 21 0a |FFD into a reg!.|
00000330 09 6d 6f 76 20 72 34 2c 72 35 09 09 3b 20 73 74 |.mov r4,r5..; st|
00000340 61 72 74 20 61 64 64 72 65 73 73 20 28 72 31 20 |art address (r1 |
00000350 6f 6e 20 65 6e 74 72 79 29 0a 09 61 64 64 20 72 |on entry)..add r|
00000360 35 2c 72 34 2c 72 36 09 09 3b 20 73 69 7a 65 20 |5,r4,r6..; size |
00000370 28 72 32 20 6f 6e 20 65 6e 74 72 79 29 0a 09 73 |(r2 on entry)..s|
00000380 77 69 20 4f 53 5f 46 69 6c 65 0a 09 6c 64 6d 66 |wi OS_File..ldmf|
00000390 64 20 73 70 21 2c 7b 72 34 2c 72 35 2c 72 36 2c |d sp!,{r4,r5,r6,|
000003a0 70 63 7d 0a 0a 0a 0a 0a 73 61 74 5f 73 63 72 65 |pc}.....sat_scre|
000003b0 65 6e 6d 6f 64 65 0a 09 6d 6f 76 20 72 31 2c 72 |enmode..mov r1,r|
000003c0 30 0a 09 6d 6f 76 20 72 30 2c 23 32 32 0a 09 73 |0..mov r0,#22..s|
000003d0 77 69 20 4f 53 5f 57 72 69 74 65 43 0a 09 6d 6f |wi OS_WriteC..mo|
000003e0 76 20 72 30 2c 72 31 0a 09 73 77 69 20 4f 53 5f |v r0,r1..swi OS_|
000003f0 57 72 69 74 65 43 0a 09 6d 6f 76 73 20 70 63 2c |WriteC..movs pc,|
00000400 6c 72 0a 0a 0a 0a 73 61 74 5f 67 65 74 73 63 72 |lr....sat_getscr|
00000410 65 65 6e 62 61 73 65 0a 09 61 64 72 6c 20 72 30 |eenbase..adrl r0|
00000420 2c 73 61 74 5f 67 65 74 73 63 72 65 65 6e 62 61 |,sat_getscreenba|
00000430 73 65 69 6e 66 6f 0a 09 6d 6f 76 20 72 31 2c 23 |seinfo..mov r1,#|
00000440 31 34 39 09 3b 20 68 61 72 64 77 61 72 65 20 73 |149.; hardware s|
00000450 63 72 65 65 6e 20 73 74 61 72 74 0a 09 6d 76 6e |creen start..mvn|
00000460 20 72 32 2c 23 30 09 3b 20 4e 4f 54 20 2d 31 0a | r2,#0.; NOT -1.|
00000470 09 73 74 6d 69 61 20 72 30 2c 7b 72 31 2c 72 32 |.stmia r0,{r1,r2|
00000480 7d 0a 09 6d 6f 76 20 72 31 2c 72 30 0a 09 73 77 |}..mov r1,r0..sw|
00000490 69 20 4f 53 5f 52 65 61 64 56 64 75 56 61 72 69 |i OS_ReadVduVari|
000004a0 61 62 6c 65 73 0a 09 6c 64 72 20 72 30 2c 5b 72 |ables..ldr r0,[r|
000004b0 30 5d 09 3b 20 65 65 63 68 2c 20 62 75 74 20 61 |0].; eech, but a|
000004c0 70 70 61 72 65 6e 74 6c 79 20 6f 6b 0a 09 6d 6f |pparently ok..mo|
000004d0 76 73 20 70 63 2c 6c 72 0a 0a 0a 0a 3b 20 72 30 |vs pc,lr....; r0|
000004e0 20 2d 20 26 78 0a 3b 20 72 31 20 2d 20 26 79 0a | - &x.; r1 - &y.|
000004f0 3b 20 72 32 20 2d 20 26 62 75 74 74 6f 6e 0a 73 |; r2 - &button.s|
00000500 61 74 5f 6d 6f 75 73 65 6f 70 0a 09 73 74 6d 66 |at_mouseop..stmf|
00000510 64 20 73 70 21 2c 7b 72 34 2d 72 36 2c 6c 72 7d |d sp!,{r4-r6,lr}|
00000520 0a 09 6d 6f 76 20 72 34 2c 72 30 0a 09 6d 6f 76 |..mov r4,r0..mov|
00000530 20 72 35 2c 72 31 0a 09 6d 6f 76 20 72 36 2c 72 | r5,r1..mov r6,r|
00000540 32 0a 09 73 77 69 20 4f 53 5f 4d 6f 75 73 65 0a |2..swi OS_Mouse.|
00000550 09 73 74 72 20 72 30 2c 5b 72 34 5d 0a 09 73 74 |.str r0,[r4]..st|
00000560 72 20 72 31 2c 5b 72 35 5d 0a 09 73 74 72 20 72 |r r1,[r5]..str r|
00000570 32 2c 5b 72 36 5d 0a 09 6c 64 6d 66 64 20 73 70 |2,[r6]..ldmfd sp|
00000580 21 2c 7b 72 34 2d 72 36 2c 70 63 7d 0a 0a 0a 0a |!,{r4-r6,pc}....|
00000590 3b 20 65 78 69 74 20 72 30 20 2d 20 74 69 6d 65 |; exit r0 - time|
000005a0 20 69 6e 20 63 73 0a 73 61 74 5f 74 69 6d 65 6f | in cs.sat_timeo|
000005b0 70 0a 09 73 77 69 20 4f 53 5f 52 65 61 64 4d 6f |p..swi OS_ReadMo|
000005c0 6e 6f 74 6f 6e 69 63 54 69 6d 65 0a 09 6d 6f 76 |notonicTime..mov|
000005d0 73 20 70 63 2c 72 31 34 0a 0a 0a 0a 09 45 4e 44 |s pc,r14.....END|
000005e0 0a |.|
000005e1 
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