Home » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_28.ADF » F/+HINT13
F/+HINT13
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 » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_28.ADF |
Filename: | F/+HINT13 |
Read OK: | ✔ |
File size: | 14F9 bytes |
Load address: | 48204556 |
Exec address: | 39544E49 |
File contents
GETDEC GETDEC reads a number as an ASCII string and converts it into binary. The maximum size of a binary number that it can return is two bytes. No errors are generated for overflows; GETDEC will return the bottom sixteen bits of an arbitrarily large number. On entry: TEMP06 points to start of string. Y gives offset from beginning of string to start of ASCII number; no leading blanks allowed. On exit: A contains low byte of number. X contains high byte of number. Y is updated to point to the non-numeric character that terminated the number. EQ no number was found; A,X,Y undefined. KINCH Call this routine to get a character of input from the keyboard. The keyboard buffer is flushed first. ESCAPEs are detected and acknowledged automatically, using the OSBYTE 126 call, and the Carry flag indicates whether ESCAPE was detected. On entry: No entry conditions. On exit: CC A contains input character. CS ESCAPE was detected. MULPLY MULPLY multiplies two eight bit numbers together, giving a sixteen bit result: On entry: A contains an 8-bit number. Y contains an 8-bit number. On exit: A contains the low byte of the result. Y contains the high byte of the result. CS if Y is non-zero (the result is greater than 255). X preserved. OUTDEC Call OUTDEC to output a sixteen bit decimal number to the VDU. On entry: X contains the low byte of the number. Y contains the high byte of the number. On exit: A,X,Y undefined. PSTRNG PSTRNG outputs a string in-line with the code to the VDU. The string must be delimited with a null, zero byte. For example: JSR PSTRNG EQUS "This will be output to the VDU" EQUB 0 On entry: Immediately following the JSR call, there is a string delimited with a null. The string must not be more then 256 characters long, including the delimiter. On exit: A,Y undefined. X preserved. RELLIN RELLIN reads a line of input, and puts it into LINBUF. The input is terminated with a Carriage Return or an ESCAPE. The OSWORD 0 call is used to get the input. TEMP06 is left pointing to the beginning of LINBUF, and Y gives the offset to the first non-space character in LINBUF. On entry: No entry parameters. On exit: LINBUF contains the line of input; maximum 256 characters. TEMP06 points to LINBUF. CMDPAR gives offset from TEMP06 to the first non-space character. CS ESCAPE terminated input. SKPCBL SKPCBL skips spaces in a line of input, terminated by a Carriage Return. On entry: TEMP06 points to beginning of input string. CMDPAR gives offset from start of string to start skipping spaces. On exit: CMDPAR gives offset to first non-space character after initial value. A contains first non-space character. EQ hit CR at end of line, before non-space character was found. The Index System The ViewStore ROM contains a set of routines for creating and maintaining index files. These are used internally by code in the ROM, and also by the INDEX utility. They are very powerful and could be used by extra utilities to great effect. You will be familiar with the way the ViewStore itself uses the index system. A utility could use indexes side by side with the ROM, or it could build and maintain indexes for its own purpose. In a ViewStore index file, you can store a "key", and associate with the key a pointer value, 4 bytes in size. They key can be any string of ASCII characters, and the pointer value any four byte integer, but usually the pointer value is used to remember a record file address. The characters that make up an index key must be between the values 32 and 254, inclusive. Since the alphabetical value of numbers and dates is not the same as the value we generally wish these data types to have (that is numbers in numerical order, and dates in age order), the ASCII number and date fields as they are stored in ViewStore data files must be converted into another form before being sent to the index system. A routine, ADJVAL, is provided to do this. Remember, if you are building or altering an index file, to use the ADJVAL routine on the key. The index system uses a technique akin to that of IBM's ISAM (indexed sequential access method) and VSAM (virtual sequential access method) systems.
00000000 47 45 54 44 45 43 0d 0d 47 45 54 44 45 43 20 72 |GETDEC..GETDEC r| 00000010 65 61 64 73 20 61 20 6e 75 6d 62 65 72 20 61 73 |eads a number as| 00000020 20 61 6e 20 41 53 43 49 49 20 73 74 72 69 6e 67 | an ASCII string| 00000030 20 61 6e 64 20 63 6f 6e 76 65 72 74 73 20 69 74 | and converts it| 00000040 20 69 6e 74 6f 20 62 69 6e 61 72 79 2e 20 20 54 | into binary. T| 00000050 68 65 0d 6d 61 78 69 6d 75 6d 20 73 69 7a 65 20 |he.maximum size | 00000060 6f 66 20 61 20 62 69 6e 61 72 79 20 6e 75 6d 62 |of a binary numb| 00000070 65 72 20 74 68 61 74 20 69 74 20 63 61 6e 20 72 |er that it can r| 00000080 65 74 75 72 6e 20 69 73 20 74 77 6f 20 62 79 74 |eturn is two byt| 00000090 65 73 2e 20 20 4e 6f 20 65 72 72 6f 72 73 0d 61 |es. No errors.a| 000000a0 72 65 20 67 65 6e 65 72 61 74 65 64 20 66 6f 72 |re generated for| 000000b0 20 6f 76 65 72 66 6c 6f 77 73 3b 20 47 45 54 44 | overflows; GETD| 000000c0 45 43 20 77 69 6c 6c 20 72 65 74 75 72 6e 20 74 |EC will return t| 000000d0 68 65 20 62 6f 74 74 6f 6d 20 73 69 78 74 65 65 |he bottom sixtee| 000000e0 6e 20 62 69 74 73 20 6f 66 0d 61 6e 20 61 72 62 |n bits of.an arb| 000000f0 69 74 72 61 72 69 6c 79 20 6c 61 72 67 65 20 6e |itrarily large n| 00000100 75 6d 62 65 72 2e 0d 0d 4f 6e 20 65 6e 74 72 79 |umber...On entry| 00000110 3a 20 20 20 20 20 20 20 54 45 4d 50 30 36 20 20 |: TEMP06 | 00000120 20 20 20 20 20 20 20 20 70 6f 69 6e 74 73 20 74 | points t| 00000130 6f 20 73 74 61 72 74 20 6f 66 20 73 74 72 69 6e |o start of strin| 00000140 67 2e 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 |g.. | 00000150 20 20 20 59 20 20 20 20 20 20 20 20 20 20 20 20 | Y | 00000160 20 20 20 67 69 76 65 73 20 6f 66 66 73 65 74 20 | gives offset | 00000170 66 72 6f 6d 20 62 65 67 69 6e 6e 69 6e 67 20 6f |from beginning o| 00000180 66 20 73 74 72 69 6e 67 20 74 6f 0d 20 20 20 20 |f string to. | 00000190 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000001a0 20 20 20 20 20 20 20 20 20 20 20 20 73 74 61 72 | star| 000001b0 74 20 6f 66 20 41 53 43 49 49 20 6e 75 6d 62 65 |t of ASCII numbe| 000001c0 72 3b 20 6e 6f 20 6c 65 61 64 69 6e 67 20 62 6c |r; no leading bl| 000001d0 61 6e 6b 73 0d 20 20 20 20 20 20 20 20 20 20 20 |anks. | 000001e0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000001f0 20 20 20 20 20 61 6c 6c 6f 77 65 64 2e 0d 0d 4f | allowed...O| 00000200 6e 20 65 78 69 74 3a 20 20 20 20 20 20 20 20 41 |n exit: A| 00000210 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 63 | c| 00000220 6f 6e 74 61 69 6e 73 20 6c 6f 77 20 62 79 74 65 |ontains low byte| 00000230 20 6f 66 20 6e 75 6d 62 65 72 2e 0d 20 20 20 20 | of number.. | 00000240 20 20 20 20 20 20 20 20 20 20 20 20 58 20 20 20 | X | 00000250 20 20 20 20 20 20 20 20 20 20 20 20 63 6f 6e 74 | cont| 00000260 61 69 6e 73 20 68 69 67 68 20 62 79 74 65 20 6f |ains high byte o| 00000270 66 20 6e 75 6d 62 65 72 2e 0d 20 20 20 20 20 20 |f number.. | 00000280 20 20 20 20 20 20 20 20 20 20 59 20 20 20 20 20 | Y | 00000290 20 20 20 20 20 20 20 20 20 20 69 73 20 75 70 64 | is upd| 000002a0 61 74 65 64 20 74 6f 20 70 6f 69 6e 74 20 74 6f |ated to point to| 000002b0 20 74 68 65 20 6e 6f 6e 2d 6e 75 6d 65 72 69 63 | the non-numeric| 000002c0 20 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | . | 000002d0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000002e0 20 20 63 68 61 72 61 63 74 65 72 20 74 68 61 74 | character that| 000002f0 20 74 65 72 6d 69 6e 61 74 65 64 20 74 68 65 20 | terminated the | 00000300 6e 75 6d 62 65 72 2e 0d 20 20 20 20 20 20 20 20 |number.. | 00000310 20 20 20 20 20 20 20 20 45 51 20 20 20 20 20 20 | EQ | 00000320 20 20 20 20 20 20 20 20 6e 6f 20 6e 75 6d 62 65 | no numbe| 00000330 72 20 77 61 73 20 66 6f 75 6e 64 3b 20 41 2c 58 |r was found; A,X| 00000340 2c 59 20 75 6e 64 65 66 69 6e 65 64 2e 0d 0d 0d |,Y undefined....| 00000350 4b 49 4e 43 48 0d 0d 43 61 6c 6c 20 74 68 69 73 |KINCH..Call this| 00000360 20 72 6f 75 74 69 6e 65 20 74 6f 20 67 65 74 20 | routine to get | 00000370 61 20 63 68 61 72 61 63 74 65 72 20 6f 66 20 69 |a character of i| 00000380 6e 70 75 74 20 66 72 6f 6d 20 74 68 65 20 6b 65 |nput from the ke| 00000390 79 62 6f 61 72 64 2e 20 20 54 68 65 0d 6b 65 79 |yboard. The.key| 000003a0 62 6f 61 72 64 20 62 75 66 66 65 72 20 69 73 20 |board buffer is | 000003b0 66 6c 75 73 68 65 64 20 66 69 72 73 74 2e 20 20 |flushed first. | 000003c0 45 53 43 41 50 45 73 20 61 72 65 20 64 65 74 65 |ESCAPEs are dete| 000003d0 63 74 65 64 20 61 6e 64 20 61 63 6b 6e 6f 77 6c |cted and acknowl| 000003e0 65 64 67 65 64 0d 61 75 74 6f 6d 61 74 69 63 61 |edged.automatica| 000003f0 6c 6c 79 2c 20 75 73 69 6e 67 20 74 68 65 20 4f |lly, using the O| 00000400 53 42 59 54 45 20 31 32 36 20 63 61 6c 6c 2c 20 |SBYTE 126 call, | 00000410 61 6e 64 20 74 68 65 20 43 61 72 72 79 20 66 6c |and the Carry fl| 00000420 61 67 20 69 6e 64 69 63 61 74 65 73 0d 77 68 65 |ag indicates.whe| 00000430 74 68 65 72 20 45 53 43 41 50 45 20 77 61 73 20 |ther ESCAPE was | 00000440 64 65 74 65 63 74 65 64 2e 0d 0d 4f 6e 20 65 6e |detected...On en| 00000450 74 72 79 3a 20 20 20 20 20 20 20 20 20 20 20 20 |try: | 00000460 20 20 20 20 20 20 20 20 20 20 20 4e 6f 20 65 6e | No en| 00000470 74 72 79 20 63 6f 6e 64 69 74 69 6f 6e 73 2e 0d |try conditions..| 00000480 0d 4f 6e 20 65 78 69 74 3a 20 20 20 20 20 20 20 |.On exit: | 00000490 20 43 43 20 20 20 20 20 20 20 20 20 20 20 20 20 | CC | 000004a0 20 41 20 63 6f 6e 74 61 69 6e 73 20 69 6e 70 75 | A contains inpu| 000004b0 74 20 63 68 61 72 61 63 74 65 72 2e 0d 20 20 20 |t character.. | 000004c0 20 20 20 20 20 20 20 20 20 20 20 20 20 43 53 20 | CS | 000004d0 20 20 20 20 20 20 20 20 20 20 20 20 20 45 53 43 | ESC| 000004e0 41 50 45 20 77 61 73 20 64 65 74 65 63 74 65 64 |APE was detected| 000004f0 2e 0d 0d 0d 4d 55 4c 50 4c 59 0d 0d 4d 55 4c 50 |....MULPLY..MULP| 00000500 4c 59 20 6d 75 6c 74 69 70 6c 69 65 73 20 74 77 |LY multiplies tw| 00000510 6f 20 65 69 67 68 74 20 62 69 74 20 6e 75 6d 62 |o eight bit numb| 00000520 65 72 73 20 74 6f 67 65 74 68 65 72 2c 20 67 69 |ers together, gi| 00000530 76 69 6e 67 20 61 20 73 69 78 74 65 65 6e 20 62 |ving a sixteen b| 00000540 69 74 0d 72 65 73 75 6c 74 3a 0d 0d 4f 6e 20 65 |it.result:..On e| 00000550 6e 74 72 79 3a 20 20 20 20 20 20 20 41 20 20 20 |ntry: A | 00000560 20 20 20 20 20 20 20 20 20 20 20 20 63 6f 6e 74 | cont| 00000570 61 69 6e 73 20 61 6e 20 38 2d 62 69 74 20 6e 75 |ains an 8-bit nu| 00000580 6d 62 65 72 2e 0d 20 20 20 20 20 20 20 20 20 20 |mber.. | 00000590 20 20 20 20 20 20 59 20 20 20 20 20 20 20 20 20 | Y | 000005a0 20 20 20 20 20 20 63 6f 6e 74 61 69 6e 73 20 61 | contains a| 000005b0 6e 20 38 2d 62 69 74 20 6e 75 6d 62 65 72 2e 0d |n 8-bit number..| 000005c0 0d 4f 6e 20 65 78 69 74 3a 20 20 20 20 20 20 20 |.On exit: | 000005d0 20 41 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | A | 000005e0 20 63 6f 6e 74 61 69 6e 73 20 74 68 65 20 6c 6f | contains the lo| 000005f0 77 20 62 79 74 65 20 6f 66 20 74 68 65 20 72 65 |w byte of the re| 00000600 73 75 6c 74 2e 0d 20 20 20 20 20 20 20 20 20 20 |sult.. | 00000610 20 20 20 20 20 20 59 20 20 20 20 20 20 20 20 20 | Y | 00000620 20 20 20 20 20 20 63 6f 6e 74 61 69 6e 73 20 74 | contains t| 00000630 68 65 20 68 69 67 68 20 62 79 74 65 20 6f 66 20 |he high byte of | 00000640 74 68 65 20 72 65 73 75 6c 74 2e 0d 20 20 20 20 |the result.. | 00000650 20 20 20 20 20 20 20 20 20 20 20 20 43 53 20 20 | CS | 00000660 20 20 20 20 20 20 20 20 20 20 20 20 69 66 20 59 | if Y| 00000670 20 69 73 20 6e 6f 6e 2d 7a 65 72 6f 20 28 74 68 | is non-zero (th| 00000680 65 20 72 65 73 75 6c 74 20 69 73 20 67 72 65 61 |e result is grea| 00000690 74 65 72 20 74 68 61 6e 0d 20 20 20 20 20 20 20 |ter than. | 000006a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000006b0 20 20 20 20 20 20 20 20 20 32 35 35 29 2e 0d 20 | 255).. | 000006c0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 58 | X| 000006d0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 70 | p| 000006e0 72 65 73 65 72 76 65 64 2e 0d 0d 0d 4f 55 54 44 |reserved....OUTD| 000006f0 45 43 0d 0d 43 61 6c 6c 20 4f 55 54 44 45 43 20 |EC..Call OUTDEC | 00000700 74 6f 20 6f 75 74 70 75 74 20 61 20 73 69 78 74 |to output a sixt| 00000710 65 65 6e 20 62 69 74 20 64 65 63 69 6d 61 6c 20 |een bit decimal | 00000720 6e 75 6d 62 65 72 20 74 6f 20 74 68 65 20 56 44 |number to the VD| 00000730 55 2e 0d 0d 4f 6e 20 65 6e 74 72 79 3a 20 20 20 |U...On entry: | 00000740 20 20 20 20 58 20 20 20 20 20 20 20 20 20 20 20 | X | 00000750 20 20 20 20 63 6f 6e 74 61 69 6e 73 20 74 68 65 | contains the| 00000760 20 6c 6f 77 20 62 79 74 65 20 6f 66 20 74 68 65 | low byte of the| 00000770 20 6e 75 6d 62 65 72 2e 0d 20 20 20 20 20 20 20 | number.. | 00000780 20 20 20 20 20 20 20 20 20 59 20 20 20 20 20 20 | Y | 00000790 20 20 20 20 20 20 20 20 20 63 6f 6e 74 61 69 6e | contain| 000007a0 73 20 74 68 65 20 68 69 67 68 20 62 79 74 65 20 |s the high byte | 000007b0 6f 66 20 74 68 65 20 6e 75 6d 62 65 72 2e 20 20 |of the number. | 000007c0 0d 0d 4f 6e 20 65 78 69 74 3a 20 20 20 20 20 20 |..On exit: | 000007d0 20 20 41 2c 58 2c 59 20 20 20 20 20 20 20 20 20 | A,X,Y | 000007e0 20 20 75 6e 64 65 66 69 6e 65 64 2e 0d 0d 0d 50 | undefined....P| 000007f0 53 54 52 4e 47 0d 0d 50 53 54 52 4e 47 20 6f 75 |STRNG..PSTRNG ou| 00000800 74 70 75 74 73 20 61 20 73 74 72 69 6e 67 20 69 |tputs a string i| 00000810 6e 2d 6c 69 6e 65 20 77 69 74 68 20 74 68 65 20 |n-line with the | 00000820 63 6f 64 65 20 74 6f 20 74 68 65 20 56 44 55 2e |code to the VDU.| 00000830 20 20 54 68 65 20 73 74 72 69 6e 67 20 6d 75 73 | The string mus| 00000840 74 0d 62 65 20 64 65 6c 69 6d 69 74 65 64 20 77 |t.be delimited w| 00000850 69 74 68 20 61 20 6e 75 6c 6c 2c 20 7a 65 72 6f |ith a null, zero| 00000860 20 62 79 74 65 2e 0d 0d 46 6f 72 20 65 78 61 6d | byte...For exam| 00000870 70 6c 65 3a 20 20 20 20 4a 53 52 20 20 20 20 20 |ple: JSR | 00000880 20 20 20 50 53 54 52 4e 47 0d 20 20 20 20 20 20 | PSTRNG. | 00000890 20 20 20 20 20 20 20 20 20 20 45 51 55 53 20 20 | EQUS | 000008a0 20 20 20 20 20 22 54 68 69 73 20 77 69 6c 6c 20 | "This will | 000008b0 62 65 20 6f 75 74 70 75 74 20 74 6f 20 74 68 65 |be output to the| 000008c0 20 56 44 55 22 0d 20 20 20 20 20 20 20 20 20 20 | VDU". | 000008d0 20 20 20 20 20 20 45 51 55 42 20 20 20 20 20 20 | EQUB | 000008e0 20 30 0d 0d 4f 6e 20 65 6e 74 72 79 3a 20 20 20 | 0..On entry: | 000008f0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 49 | I| 00000900 6d 6d 65 64 69 61 74 65 6c 79 20 66 6f 6c 6c 6f |mmediately follo| 00000910 77 69 6e 67 20 74 68 65 20 4a 53 52 20 63 61 6c |wing the JSR cal| 00000920 6c 2c 20 74 68 65 72 65 20 69 73 20 61 0d 20 20 |l, there is a. | 00000930 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000940 20 20 20 20 20 20 20 20 20 73 74 72 69 6e 67 20 | string | 00000950 64 65 6c 69 6d 69 74 65 64 20 77 69 74 68 20 61 |delimited with a| 00000960 20 6e 75 6c 6c 2e 20 20 54 68 65 20 73 74 72 69 | null. The stri| 00000970 6e 67 20 6d 75 73 74 0d 20 20 20 20 20 20 20 20 |ng must. | 00000980 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000990 20 20 20 6e 6f 74 20 62 65 20 6d 6f 72 65 20 74 | not be more t| 000009a0 68 65 6e 20 32 35 36 20 63 68 61 72 61 63 74 65 |hen 256 characte| 000009b0 72 73 20 6c 6f 6e 67 2c 20 69 6e 63 6c 75 64 69 |rs long, includi| 000009c0 6e 67 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 |ng. | 000009d0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 74 68 | th| 000009e0 65 20 64 65 6c 69 6d 69 74 65 72 2e 0d 0d 4f 6e |e delimiter...On| 000009f0 20 65 78 69 74 3a 20 20 20 20 20 20 20 20 41 2c | exit: A,| 00000a00 59 20 20 20 20 20 20 20 20 75 6e 64 65 66 69 6e |Y undefin| 00000a10 65 64 2e 0d 20 20 20 20 20 20 20 20 20 20 20 20 |ed.. | 00000a20 20 20 20 20 58 20 20 20 20 20 20 20 20 20 20 70 | X p| 00000a30 72 65 73 65 72 76 65 64 2e 0d 0d 0d 52 45 4c 4c |reserved....RELL| 00000a40 49 4e 0d 0d 52 45 4c 4c 49 4e 20 72 65 61 64 73 |IN..RELLIN reads| 00000a50 20 61 20 6c 69 6e 65 20 6f 66 20 69 6e 70 75 74 | a line of input| 00000a60 2c 20 61 6e 64 20 70 75 74 73 20 69 74 20 69 6e |, and puts it in| 00000a70 74 6f 20 4c 49 4e 42 55 46 2e 20 20 54 68 65 20 |to LINBUF. The | 00000a80 69 6e 70 75 74 20 69 73 0d 74 65 72 6d 69 6e 61 |input is.termina| 00000a90 74 65 64 20 77 69 74 68 20 61 20 43 61 72 72 69 |ted with a Carri| 00000aa0 61 67 65 20 52 65 74 75 72 6e 20 6f 72 20 61 6e |age Return or an| 00000ab0 20 45 53 43 41 50 45 2e 20 20 54 68 65 20 4f 53 | ESCAPE. The OS| 00000ac0 57 4f 52 44 20 30 20 63 61 6c 6c 20 69 73 20 75 |WORD 0 call is u| 00000ad0 73 65 64 0d 74 6f 20 67 65 74 20 74 68 65 20 69 |sed.to get the i| 00000ae0 6e 70 75 74 2e 20 20 54 45 4d 50 30 36 20 69 73 |nput. TEMP06 is| 00000af0 20 6c 65 66 74 20 70 6f 69 6e 74 69 6e 67 20 74 | left pointing t| 00000b00 6f 20 74 68 65 20 62 65 67 69 6e 6e 69 6e 67 20 |o the beginning | 00000b10 6f 66 20 4c 49 4e 42 55 46 2c 20 61 6e 64 20 59 |of LINBUF, and Y| 00000b20 0d 67 69 76 65 73 20 74 68 65 20 6f 66 66 73 65 |.gives the offse| 00000b30 74 20 74 6f 20 74 68 65 20 66 69 72 73 74 20 6e |t to the first n| 00000b40 6f 6e 2d 73 70 61 63 65 20 63 68 61 72 61 63 74 |on-space charact| 00000b50 65 72 20 69 6e 20 4c 49 4e 42 55 46 2e 0d 0d 4f |er in LINBUF...O| 00000b60 6e 20 65 6e 74 72 79 3a 20 20 20 20 20 20 20 20 |n entry: | 00000b70 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4e | N| 00000b80 6f 20 65 6e 74 72 79 20 70 61 72 61 6d 65 74 65 |o entry paramete| 00000b90 72 73 2e 0d 0d 4f 6e 20 65 78 69 74 3a 20 20 20 |rs...On exit: | 00000ba0 20 20 20 20 20 4c 49 4e 42 55 46 20 20 20 20 20 | LINBUF | 00000bb0 20 20 20 20 20 63 6f 6e 74 61 69 6e 73 20 74 68 | contains th| 00000bc0 65 20 6c 69 6e 65 20 6f 66 20 69 6e 70 75 74 3b |e line of input;| 00000bd0 20 6d 61 78 69 6d 75 6d 20 32 35 36 20 0d 20 20 | maximum 256 . | 00000be0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000bf0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 63 68 | ch| 00000c00 61 72 61 63 74 65 72 73 2e 0d 20 20 20 20 20 20 |aracters.. | 00000c10 20 20 20 20 20 20 20 20 20 20 54 45 4d 50 30 36 | TEMP06| 00000c20 20 20 20 20 20 20 20 20 20 20 70 6f 69 6e 74 73 | points| 00000c30 20 74 6f 20 4c 49 4e 42 55 46 2e 0d 20 20 20 20 | to LINBUF.. | 00000c40 20 20 20 20 20 20 20 20 20 20 20 20 43 4d 44 50 | CMDP| 00000c50 41 52 20 20 20 20 20 20 20 20 20 20 67 69 76 65 |AR give| 00000c60 73 20 6f 66 66 73 65 74 20 66 72 6f 6d 20 54 45 |s offset from TE| 00000c70 4d 50 30 36 20 74 6f 20 74 68 65 20 66 69 72 73 |MP06 to the firs| 00000c80 74 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |t. | 00000c90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000ca0 20 20 6e 6f 6e 2d 73 70 61 63 65 20 63 68 61 72 | non-space char| 00000cb0 61 63 74 65 72 2e 0d 0d 20 20 20 20 20 20 20 20 |acter... | 00000cc0 20 20 20 20 20 20 20 20 43 53 20 20 20 20 20 20 | CS | 00000cd0 20 20 20 20 20 20 20 20 45 53 43 41 50 45 20 74 | ESCAPE t| 00000ce0 65 72 6d 69 6e 61 74 65 64 20 69 6e 70 75 74 2e |erminated input.| 00000cf0 0d 0d 0d 0d 53 4b 50 43 42 4c 0d 0d 53 4b 50 43 |....SKPCBL..SKPC| 00000d00 42 4c 20 73 6b 69 70 73 20 73 70 61 63 65 73 20 |BL skips spaces | 00000d10 69 6e 20 61 20 6c 69 6e 65 20 6f 66 20 69 6e 70 |in a line of inp| 00000d20 75 74 2c 20 74 65 72 6d 69 6e 61 74 65 64 20 62 |ut, terminated b| 00000d30 79 20 61 20 43 61 72 72 69 61 67 65 20 52 65 74 |y a Carriage Ret| 00000d40 75 72 6e 2e 0d 0d 4f 6e 20 65 6e 74 72 79 3a 20 |urn...On entry: | 00000d50 20 20 20 20 20 20 54 45 4d 50 30 36 20 20 20 20 | TEMP06 | 00000d60 20 20 20 20 20 20 70 6f 69 6e 74 73 20 74 6f 20 | points to | 00000d70 62 65 67 69 6e 6e 69 6e 67 20 6f 66 20 69 6e 70 |beginning of inp| 00000d80 75 74 20 73 74 72 69 6e 67 2e 0d 20 20 20 20 20 |ut string.. | 00000d90 20 20 20 20 20 20 20 20 20 20 20 43 4d 44 50 41 | CMDPA| 00000da0 52 20 20 20 20 20 20 20 20 20 20 67 69 76 65 73 |R gives| 00000db0 20 6f 66 66 73 65 74 20 66 72 6f 6d 20 73 74 61 | offset from sta| 00000dc0 72 74 20 6f 66 20 73 74 72 69 6e 67 20 74 6f 20 |rt of string to | 00000dd0 73 74 61 72 74 0d 20 20 20 20 20 20 20 20 20 20 |start. | 00000de0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000df0 20 20 20 20 20 20 73 6b 69 70 70 69 6e 67 20 73 | skipping s| 00000e00 70 61 63 65 73 2e 0d 0d 4f 6e 20 65 78 69 74 3a |paces...On exit:| 00000e10 20 20 20 20 20 20 20 20 43 4d 44 50 41 52 20 20 | CMDPAR | 00000e20 20 20 20 20 20 20 20 20 67 69 76 65 73 20 6f 66 | gives of| 00000e30 66 73 65 74 20 74 6f 20 66 69 72 73 74 20 6e 6f |fset to first no| 00000e40 6e 2d 73 70 61 63 65 20 63 68 61 72 61 63 74 65 |n-space characte| 00000e50 72 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |r. | 00000e60 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000e70 20 20 61 66 74 65 72 20 69 6e 69 74 69 61 6c 20 | after initial | 00000e80 76 61 6c 75 65 2e 0d 20 20 20 20 20 20 20 20 20 |value.. | 00000e90 20 20 20 20 20 20 20 41 20 20 20 20 20 20 20 20 | A | 00000ea0 20 20 20 20 20 20 20 63 6f 6e 74 61 69 6e 73 20 | contains | 00000eb0 66 69 72 73 74 20 6e 6f 6e 2d 73 70 61 63 65 20 |first non-space | 00000ec0 63 68 61 72 61 63 74 65 72 2e 0d 20 20 20 20 20 |character.. | 00000ed0 20 20 20 20 20 20 20 20 20 20 20 45 51 20 20 20 | EQ | 00000ee0 20 20 20 20 20 20 20 20 20 20 20 68 69 74 20 43 | hit C| 00000ef0 52 20 61 74 20 65 6e 64 20 6f 66 20 6c 69 6e 65 |R at end of line| 00000f00 2c 20 62 65 66 6f 72 65 20 6e 6f 6e 2d 73 70 61 |, before non-spa| 00000f10 63 65 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 |ce. | 00000f20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000f30 20 20 20 63 68 61 72 61 63 74 65 72 20 77 61 73 | character was| 00000f40 20 66 6f 75 6e 64 2e 0d 0d 0d 54 68 65 20 49 6e | found....The In| 00000f50 64 65 78 20 53 79 73 74 65 6d 0d 0d 54 68 65 20 |dex System..The | 00000f60 56 69 65 77 53 74 6f 72 65 20 52 4f 4d 20 63 6f |ViewStore ROM co| 00000f70 6e 74 61 69 6e 73 20 61 20 73 65 74 20 6f 66 20 |ntains a set of | 00000f80 72 6f 75 74 69 6e 65 73 20 66 6f 72 20 63 72 65 |routines for cre| 00000f90 61 74 69 6e 67 20 61 6e 64 20 6d 61 69 6e 74 61 |ating and mainta| 00000fa0 69 6e 69 6e 67 0d 69 6e 64 65 78 20 66 69 6c 65 |ining.index file| 00000fb0 73 2e 20 20 54 68 65 73 65 20 61 72 65 20 75 73 |s. These are us| 00000fc0 65 64 20 69 6e 74 65 72 6e 61 6c 6c 79 20 62 79 |ed internally by| 00000fd0 20 63 6f 64 65 20 69 6e 20 74 68 65 20 52 4f 4d | code in the ROM| 00000fe0 2c 20 61 6e 64 20 61 6c 73 6f 20 62 79 20 74 68 |, and also by th| 00000ff0 65 0d 49 4e 44 45 58 20 75 74 69 6c 69 74 79 2e |e.INDEX utility.| 00001000 20 20 54 68 65 79 20 61 72 65 20 76 65 72 79 20 | They are very | 00001010 70 6f 77 65 72 66 75 6c 20 61 6e 64 20 63 6f 75 |powerful and cou| 00001020 6c 64 20 62 65 20 75 73 65 64 20 62 79 20 65 78 |ld be used by ex| 00001030 74 72 61 20 75 74 69 6c 69 74 69 65 73 0d 74 6f |tra utilities.to| 00001040 20 67 72 65 61 74 20 65 66 66 65 63 74 2e 0d 0d | great effect...| 00001050 59 6f 75 20 77 69 6c 6c 20 62 65 20 66 61 6d 69 |You will be fami| 00001060 6c 69 61 72 20 77 69 74 68 20 74 68 65 20 77 61 |liar with the wa| 00001070 79 20 74 68 65 20 56 69 65 77 53 74 6f 72 65 20 |y the ViewStore | 00001080 69 74 73 65 6c 66 20 75 73 65 73 20 74 68 65 20 |itself uses the | 00001090 69 6e 64 65 78 0d 73 79 73 74 65 6d 2e 20 20 41 |index.system. A| 000010a0 20 75 74 69 6c 69 74 79 20 63 6f 75 6c 64 20 75 | utility could u| 000010b0 73 65 20 69 6e 64 65 78 65 73 20 73 69 64 65 20 |se indexes side | 000010c0 62 79 20 73 69 64 65 20 77 69 74 68 20 74 68 65 |by side with the| 000010d0 20 52 4f 4d 2c 20 6f 72 20 69 74 20 63 6f 75 6c | ROM, or it coul| 000010e0 64 0d 62 75 69 6c 64 20 61 6e 64 20 6d 61 69 6e |d.build and main| 000010f0 74 61 69 6e 20 69 6e 64 65 78 65 73 20 66 6f 72 |tain indexes for| 00001100 20 69 74 73 20 6f 77 6e 20 70 75 72 70 6f 73 65 | its own purpose| 00001110 2e 0d 0d 49 6e 20 61 20 56 69 65 77 53 74 6f 72 |...In a ViewStor| 00001120 65 20 69 6e 64 65 78 20 66 69 6c 65 2c 20 79 6f |e index file, yo| 00001130 75 20 63 61 6e 20 73 74 6f 72 65 20 61 20 22 6b |u can store a "k| 00001140 65 79 22 2c 20 61 6e 64 20 61 73 73 6f 63 69 61 |ey", and associa| 00001150 74 65 20 77 69 74 68 20 74 68 65 20 6b 65 79 0d |te with the key.| 00001160 61 20 70 6f 69 6e 74 65 72 20 76 61 6c 75 65 2c |a pointer value,| 00001170 20 34 20 62 79 74 65 73 20 69 6e 20 73 69 7a 65 | 4 bytes in size| 00001180 2e 20 20 54 68 65 79 20 6b 65 79 20 63 61 6e 20 |. They key can | 00001190 62 65 20 61 6e 79 20 73 74 72 69 6e 67 20 6f 66 |be any string of| 000011a0 20 41 53 43 49 49 0d 63 68 61 72 61 63 74 65 72 | ASCII.character| 000011b0 73 2c 20 61 6e 64 20 74 68 65 20 70 6f 69 6e 74 |s, and the point| 000011c0 65 72 20 76 61 6c 75 65 20 61 6e 79 20 66 6f 75 |er value any fou| 000011d0 72 20 62 79 74 65 20 69 6e 74 65 67 65 72 2c 20 |r byte integer, | 000011e0 62 75 74 20 75 73 75 61 6c 6c 79 20 74 68 65 0d |but usually the.| 000011f0 70 6f 69 6e 74 65 72 20 76 61 6c 75 65 20 69 73 |pointer value is| 00001200 20 75 73 65 64 20 74 6f 20 72 65 6d 65 6d 62 65 | used to remembe| 00001210 72 20 61 20 72 65 63 6f 72 64 20 66 69 6c 65 20 |r a record file | 00001220 61 64 64 72 65 73 73 2e 20 0d 0d 54 68 65 20 63 |address. ..The c| 00001230 68 61 72 61 63 74 65 72 73 20 74 68 61 74 20 6d |haracters that m| 00001240 61 6b 65 20 75 70 20 61 6e 20 69 6e 64 65 78 20 |ake up an index | 00001250 6b 65 79 20 6d 75 73 74 20 62 65 20 62 65 74 77 |key must be betw| 00001260 65 65 6e 20 74 68 65 20 76 61 6c 75 65 73 20 33 |een the values 3| 00001270 32 20 61 6e 64 0d 32 35 34 2c 20 69 6e 63 6c 75 |2 and.254, inclu| 00001280 73 69 76 65 2e 20 20 53 69 6e 63 65 20 74 68 65 |sive. Since the| 00001290 20 61 6c 70 68 61 62 65 74 69 63 61 6c 20 76 61 | alphabetical va| 000012a0 6c 75 65 20 6f 66 20 6e 75 6d 62 65 72 73 20 61 |lue of numbers a| 000012b0 6e 64 20 64 61 74 65 73 20 69 73 20 6e 6f 74 0d |nd dates is not.| 000012c0 74 68 65 20 73 61 6d 65 20 61 73 20 74 68 65 20 |the same as the | 000012d0 76 61 6c 75 65 20 77 65 20 67 65 6e 65 72 61 6c |value we general| 000012e0 6c 79 20 77 69 73 68 20 74 68 65 73 65 20 64 61 |ly wish these da| 000012f0 74 61 20 74 79 70 65 73 20 74 6f 20 68 61 76 65 |ta types to have| 00001300 20 28 74 68 61 74 20 69 73 0d 6e 75 6d 62 65 72 | (that is.number| 00001310 73 20 69 6e 20 6e 75 6d 65 72 69 63 61 6c 20 6f |s in numerical o| 00001320 72 64 65 72 2c 20 61 6e 64 20 64 61 74 65 73 20 |rder, and dates | 00001330 69 6e 20 61 67 65 20 6f 72 64 65 72 29 2c 20 74 |in age order), t| 00001340 68 65 20 41 53 43 49 49 20 6e 75 6d 62 65 72 20 |he ASCII number | 00001350 61 6e 64 0d 64 61 74 65 20 66 69 65 6c 64 73 20 |and.date fields | 00001360 61 73 20 74 68 65 79 20 61 72 65 20 73 74 6f 72 |as they are stor| 00001370 65 64 20 69 6e 20 56 69 65 77 53 74 6f 72 65 20 |ed in ViewStore | 00001380 64 61 74 61 20 66 69 6c 65 73 20 6d 75 73 74 20 |data files must | 00001390 62 65 20 63 6f 6e 76 65 72 74 65 64 0d 69 6e 74 |be converted.int| 000013a0 6f 20 61 6e 6f 74 68 65 72 20 66 6f 72 6d 20 62 |o another form b| 000013b0 65 66 6f 72 65 20 62 65 69 6e 67 20 73 65 6e 74 |efore being sent| 000013c0 20 74 6f 20 74 68 65 20 69 6e 64 65 78 20 73 79 | to the index sy| 000013d0 73 74 65 6d 2e 20 20 41 20 72 6f 75 74 69 6e 65 |stem. A routine| 000013e0 2c 20 41 44 4a 56 41 4c 2c 0d 69 73 20 70 72 6f |, ADJVAL,.is pro| 000013f0 76 69 64 65 64 20 74 6f 20 64 6f 20 74 68 69 73 |vided to do this| 00001400 2e 20 20 52 65 6d 65 6d 62 65 72 2c 20 69 66 20 |. Remember, if | 00001410 79 6f 75 20 61 72 65 20 62 75 69 6c 64 69 6e 67 |you are building| 00001420 20 6f 72 20 61 6c 74 65 72 69 6e 67 20 61 6e 20 | or altering an | 00001430 69 6e 64 65 78 0d 66 69 6c 65 2c 20 74 6f 20 75 |index.file, to u| 00001440 73 65 20 74 68 65 20 41 44 4a 56 41 4c 20 72 6f |se the ADJVAL ro| 00001450 75 74 69 6e 65 20 6f 6e 20 74 68 65 20 6b 65 79 |utine on the key| 00001460 2e 0d 0d 54 68 65 20 69 6e 64 65 78 20 73 79 73 |...The index sys| 00001470 74 65 6d 20 75 73 65 73 20 61 20 74 65 63 68 6e |tem uses a techn| 00001480 69 71 75 65 20 61 6b 69 6e 20 74 6f 20 74 68 61 |ique akin to tha| 00001490 74 20 6f 66 20 49 42 4d 27 73 20 49 53 41 4d 20 |t of IBM's ISAM | 000014a0 28 69 6e 64 65 78 65 64 0d 73 65 71 75 65 6e 74 |(indexed.sequent| 000014b0 69 61 6c 20 61 63 63 65 73 73 20 6d 65 74 68 6f |ial access metho| 000014c0 64 29 20 61 6e 64 20 56 53 41 4d 20 28 76 69 72 |d) and VSAM (vir| 000014d0 74 75 61 6c 20 73 65 71 75 65 6e 74 69 61 6c 20 |tual sequential | 000014e0 61 63 63 65 73 73 20 6d 65 74 68 6f 64 29 0d 73 |access method).s| 000014f0 79 73 74 65 6d 73 2e 0d 0d |ystems...| 000014f9