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WP/programs/hoare/DirPrmtSrc
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 » Zipped Apps » 1st Word Plus |
| Filename: | WP/programs/hoare/DirPrmtSrc |
| Read OK: | ✔ |
| File size: | 05EF bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
10REM > $.DirPrmtSrc
20REM Author Steve Hoare (based on PRM pages 349/350)
30REM January 1989
40REM Creates current directory CLI prompt utility
50DIM Space 150
60FOR Pass=0 TO 2 STEP 2
70P%=Space
80[OPT Pass
90.CreateVar ADR R0,VarName
100 ADR R1,Code
110 MOV R2,#(VarName-Code)
120 MOV R3,#0
130 MOV R4,#16 ;Special code calling type
140 SWI "OS_SetVarVal" ;Create variable, reporting errors
150 ADR R0,Command
160 SWI "OS_CLI" ;Set Cli$Prompt
170.Code MOV PC,R14 ;Variable never written so just return
180.ReadCode STMFD R13!,{R3,R4,R14} ;Stack Rs which may be changed by SWI
190 MOV R0,#6 ;Set up to read directory name
200 ADR R2,NameBuffer ;Point to buffer created with variable
210 SWI "XOS_GBPB" ;Read current directory
220 ADD R0,R2,#2 ;Point R0 to value of variable
230 LDRB R2,[R2,#1] ;Directory name length to R2
240 MOVVS R2,#0 ;If error occurred variable length =0
250 LDMFD R13!,{R3,R4,PC}^ ;Return, restoring regs & flags
260.NameBuffer EQUB 0
270 EQUB 10
280 EQUS "NameString"
290 EQUB 0
300 ALIGN
310.VarName EQUS "Curr$Dir "
320.Command EQUS "SETMACRO Cli$Prompt <Curr$Dir><13><10>*"
330 EQUB 0
340]
350NEXT
360OSCLI("SAVE DirPrompt "+STR$~CreateVar+" "+STR$~P%)
370*SETTYPE DirPrompt FFC
� > $.DirPrmtSrc
5� Author Steve Hoare (based on PRM pages 349/350)
� January 1989
(2� Creates current directory CLI prompt utility
2� Space 150
<� Pass=0 � 2 � 2
F P%=Space
P
[OPT Pass
Z .CreateVar ADR R0,VarName
d ADR R1,Code
n& MOV R2,#(VarName-Code)
x MOV R3,#0
�B MOV R4,#16 ;Special code calling type
�J SWI "OS_SetVarVal" ;Create variable, reporting errors
� ADR R0,Command
�7 SWI "OS_CLI" ;Set Cli$Prompt
�N.Code MOV PC,R14 ;Variable never written so just return
�M.ReadCode STMFD R13!,{R3,R4,R14} ;Stack Rs which may be changed by SWI
�F MOV R0,#6 ;Set up to read directory name
�N ADR R2,NameBuffer ;Point to buffer created with variable
�? SWI "XOS_GBPB" ;Read current directory
�F ADD R0,R2,#2 ;Point R0 to value of variable
�D LDRB R2,[R2,#1] ;Directory name length to R2
�M MOVVS R2,#0 ;If error occurred variable length =0
�G LDMFD R13!,{R3,R4,PC}^ ;Return, restoring regs & flags
.NameBuffer EQUB 0
EQUB 10
! EQUS "NameString"
" EQUB 0
, ALIGN
6 .VarName EQUS "Curr$Dir "
@>.Command EQUS "SETMACRO Cli$Prompt <Curr$Dir><13><10>*"
J EQUB 0
T]
^�
h-�("SAVE DirPrompt "+�~CreateVar+" "+�~P%)
r*SETTYPE DirPrompt FFC
� 00000000 0d 00 0a 15 f4 20 3e 20 20 24 2e 44 69 72 50 72 |..... > $.DirPr|
00000010 6d 74 53 72 63 0d 00 14 35 f4 20 41 75 74 68 6f |mtSrc...5. Autho|
00000020 72 20 53 74 65 76 65 20 48 6f 61 72 65 20 28 62 |r Steve Hoare (b|
00000030 61 73 65 64 20 6f 6e 20 50 52 4d 20 70 61 67 65 |ased on PRM page|
00000040 73 20 33 34 39 2f 33 35 30 29 0d 00 1e 12 f4 20 |s 349/350)..... |
00000050 4a 61 6e 75 61 72 79 20 31 39 38 39 0d 00 28 32 |January 1989..(2|
00000060 f4 20 43 72 65 61 74 65 73 20 63 75 72 72 65 6e |. Creates curren|
00000070 74 20 64 69 72 65 63 74 6f 72 79 20 43 4c 49 20 |t directory CLI |
00000080 70 72 6f 6d 70 74 20 75 74 69 6c 69 74 79 0d 00 |prompt utility..|
00000090 32 0f de 20 53 70 61 63 65 20 31 35 30 0d 00 3c |2.. Space 150..<|
000000a0 14 e3 20 50 61 73 73 3d 30 20 b8 20 32 20 88 20 |.. Pass=0 . 2 . |
000000b0 32 0d 00 46 0c 50 25 3d 53 70 61 63 65 0d 00 50 |2..F.P%=Space..P|
000000c0 0d 5b 4f 50 54 20 50 61 73 73 0d 00 5a 1e 2e 43 |.[OPT Pass..Z..C|
000000d0 72 65 61 74 65 56 61 72 20 20 41 44 52 20 52 30 |reateVar ADR R0|
000000e0 2c 56 61 72 4e 61 6d 65 0d 00 64 1b 20 20 20 20 |,VarName..d. |
000000f0 20 20 20 20 20 20 20 20 41 44 52 20 52 31 2c 43 | ADR R1,C|
00000100 6f 64 65 0d 00 6e 26 20 20 20 20 20 20 20 20 20 |ode..n& |
00000110 20 20 20 4d 4f 56 20 52 32 2c 23 28 56 61 72 4e | MOV R2,#(VarN|
00000120 61 6d 65 2d 43 6f 64 65 29 0d 00 78 19 20 20 20 |ame-Code)..x. |
00000130 20 20 20 20 20 20 20 20 20 4d 4f 56 20 52 33 2c | MOV R3,|
00000140 23 30 0d 00 82 42 20 20 20 20 20 20 20 20 20 20 |#0...B |
00000150 20 20 4d 4f 56 20 52 34 2c 23 31 36 20 20 20 20 | MOV R4,#16 |
00000160 20 20 20 20 20 20 20 20 20 20 3b 53 70 65 63 69 | ;Speci|
00000170 61 6c 20 63 6f 64 65 20 63 61 6c 6c 69 6e 67 20 |al code calling |
00000180 74 79 70 65 0d 00 8c 4a 20 20 20 20 20 20 20 20 |type...J |
00000190 20 20 20 20 53 57 49 20 22 4f 53 5f 53 65 74 56 | SWI "OS_SetV|
000001a0 61 72 56 61 6c 22 20 20 20 20 20 20 3b 43 72 65 |arVal" ;Cre|
000001b0 61 74 65 20 76 61 72 69 61 62 6c 65 2c 20 72 65 |ate variable, re|
000001c0 70 6f 72 74 69 6e 67 20 65 72 72 6f 72 73 0d 00 |porting errors..|
000001d0 96 1e 20 20 20 20 20 20 20 20 20 20 20 20 41 44 |.. AD|
000001e0 52 20 52 30 2c 43 6f 6d 6d 61 6e 64 0d 00 a0 37 |R R0,Command...7|
000001f0 20 20 20 20 20 20 20 20 20 20 20 20 53 57 49 20 | SWI |
00000200 22 4f 53 5f 43 4c 49 22 20 20 20 20 20 20 20 20 |"OS_CLI" |
00000210 20 20 20 20 3b 53 65 74 20 43 6c 69 24 50 72 6f | ;Set Cli$Pro|
00000220 6d 70 74 0d 00 aa 4e 2e 43 6f 64 65 20 20 20 20 |mpt...N.Code |
00000230 20 20 20 4d 4f 56 20 50 43 2c 52 31 34 20 20 20 | MOV PC,R14 |
00000240 20 20 20 20 20 20 20 20 20 20 20 3b 56 61 72 69 | ;Vari|
00000250 61 62 6c 65 20 6e 65 76 65 72 20 77 72 69 74 74 |able never writt|
00000260 65 6e 20 73 6f 20 6a 75 73 74 20 72 65 74 75 72 |en so just retur|
00000270 6e 0d 00 b4 4d 2e 52 65 61 64 43 6f 64 65 20 20 |n...M.ReadCode |
00000280 20 53 54 4d 46 44 20 52 31 33 21 2c 7b 52 33 2c | STMFD R13!,{R3,|
00000290 52 34 2c 52 31 34 7d 20 20 3b 53 74 61 63 6b 20 |R4,R14} ;Stack |
000002a0 52 73 20 77 68 69 63 68 20 6d 61 79 20 62 65 20 |Rs which may be |
000002b0 63 68 61 6e 67 65 64 20 62 79 20 53 57 49 0d 00 |changed by SWI..|
000002c0 be 46 20 20 20 20 20 20 20 20 20 20 20 20 4d 4f |.F MO|
000002d0 56 20 52 30 2c 23 36 20 20 20 20 20 20 20 20 20 |V R0,#6 |
000002e0 20 20 20 20 20 20 3b 53 65 74 20 75 70 20 74 6f | ;Set up to|
000002f0 20 72 65 61 64 20 64 69 72 65 63 74 6f 72 79 20 | read directory |
00000300 6e 61 6d 65 0d 00 c8 4e 20 20 20 20 20 20 20 20 |name...N |
00000310 20 20 20 20 41 44 52 20 52 32 2c 4e 61 6d 65 42 | ADR R2,NameB|
00000320 75 66 66 65 72 20 20 20 20 20 20 20 3b 50 6f 69 |uffer ;Poi|
00000330 6e 74 20 74 6f 20 62 75 66 66 65 72 20 63 72 65 |nt to buffer cre|
00000340 61 74 65 64 20 77 69 74 68 20 76 61 72 69 61 62 |ated with variab|
00000350 6c 65 0d 00 d2 3f 20 20 20 20 20 20 20 20 20 20 |le...? |
00000360 20 20 53 57 49 20 22 58 4f 53 5f 47 42 50 42 22 | SWI "XOS_GBPB"|
00000370 20 20 20 20 20 20 20 20 20 20 3b 52 65 61 64 20 | ;Read |
00000380 63 75 72 72 65 6e 74 20 64 69 72 65 63 74 6f 72 |current director|
00000390 79 0d 00 dc 46 20 20 20 20 20 20 20 20 20 20 20 |y...F |
000003a0 20 41 44 44 20 52 30 2c 52 32 2c 23 32 20 20 20 | ADD R0,R2,#2 |
000003b0 20 20 20 20 20 20 20 20 20 3b 50 6f 69 6e 74 20 | ;Point |
000003c0 52 30 20 74 6f 20 76 61 6c 75 65 20 6f 66 20 76 |R0 to value of v|
000003d0 61 72 69 61 62 6c 65 0d 00 e6 44 20 20 20 20 20 |ariable...D |
000003e0 20 20 20 20 20 20 20 4c 44 52 42 20 52 32 2c 5b | LDRB R2,[|
000003f0 52 32 2c 23 31 5d 20 20 20 20 20 20 20 20 20 3b |R2,#1] ;|
00000400 44 69 72 65 63 74 6f 72 79 20 6e 61 6d 65 20 6c |Directory name l|
00000410 65 6e 67 74 68 20 74 6f 20 52 32 0d 00 f0 4d 20 |ength to R2...M |
00000420 20 20 20 20 20 20 20 20 20 20 20 4d 4f 56 56 53 | MOVVS|
00000430 20 52 32 2c 23 30 20 20 20 20 20 20 20 20 20 20 | R2,#0 |
00000440 20 20 20 3b 49 66 20 65 72 72 6f 72 20 6f 63 63 | ;If error occ|
00000450 75 72 72 65 64 20 76 61 72 69 61 62 6c 65 20 6c |urred variable l|
00000460 65 6e 67 74 68 20 3d 30 0d 00 fa 47 20 20 20 20 |ength =0...G |
00000470 20 20 20 20 20 20 20 20 4c 44 4d 46 44 20 52 31 | LDMFD R1|
00000480 33 21 2c 7b 52 33 2c 52 34 2c 50 43 7d 5e 20 20 |3!,{R3,R4,PC}^ |
00000490 3b 52 65 74 75 72 6e 2c 20 72 65 73 74 6f 72 69 |;Return, restori|
000004a0 6e 67 20 72 65 67 73 20 26 20 66 6c 61 67 73 0d |ng regs & flags.|
000004b0 01 04 16 2e 4e 61 6d 65 42 75 66 66 65 72 20 45 |....NameBuffer E|
000004c0 51 55 42 20 30 0d 01 0e 17 20 20 20 20 20 20 20 |QUB 0.... |
000004d0 20 20 20 20 20 45 51 55 42 20 31 30 0d 01 18 21 | EQUB 10...!|
000004e0 20 20 20 20 20 20 20 20 20 20 20 20 45 51 55 53 | EQUS|
000004f0 20 22 4e 61 6d 65 53 74 72 69 6e 67 22 0d 01 22 | "NameString".."|
00000500 16 20 20 20 20 20 20 20 20 20 20 20 20 45 51 55 |. EQU|
00000510 42 20 30 0d 01 2c 15 20 20 20 20 20 20 20 20 20 |B 0..,. |
00000520 20 20 20 41 4c 49 47 4e 0d 01 36 20 2e 56 61 72 | ALIGN..6 .Var|
00000530 4e 61 6d 65 20 20 20 20 45 51 55 53 20 22 43 75 |Name EQUS "Cu|
00000540 72 72 24 44 69 72 20 22 0d 01 40 3e 2e 43 6f 6d |rr$Dir "..@>.Com|
00000550 6d 61 6e 64 20 20 20 20 45 51 55 53 20 22 53 45 |mand EQUS "SE|
00000560 54 4d 41 43 52 4f 20 43 6c 69 24 50 72 6f 6d 70 |TMACRO Cli$Promp|
00000570 74 20 3c 43 75 72 72 24 44 69 72 3e 3c 31 33 3e |t <Curr$Dir><13>|
00000580 3c 31 30 3e 2a 22 0d 01 4a 16 20 20 20 20 20 20 |<10>*"..J. |
00000590 20 20 20 20 20 20 45 51 55 42 20 30 0d 01 54 05 | EQUB 0..T.|
000005a0 5d 0d 01 5e 05 ed 0d 01 68 2d ff 28 22 53 41 56 |]..^....h-.("SAV|
000005b0 45 20 44 69 72 50 72 6f 6d 70 74 20 22 2b c3 7e |E DirPrompt "+.~|
000005c0 43 72 65 61 74 65 56 61 72 2b 22 20 22 2b c3 7e |CreateVar+" "+.~|
000005d0 50 25 29 0d 01 72 1a 2a 53 45 54 54 59 50 45 20 |P%)..r.*SETTYPE |
000005e0 44 69 72 50 72 6f 6d 70 74 20 46 46 43 0d ff |DirPrompt FFC..|
000005ef 
.