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F/+HINT9
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/+HINT9 |
| Read OK: | ✔ |
| File size: | 1472 bytes |
| Load address: | 48204556 |
| Exec address: | 35544E49 |
File contents
CHKEOF
CHKEOF checks the character in the A register for an end of field marker.
It should be used rather than checking for the character explicitly since it
handles classes of characters rather than single values. Generally, it is
not necessary to detect illegal characters explicitly, it is enough to
detect them as an end of field marker.
On entry: A contains character value to be checked.
On exit: EQ end of field.
CS end of record (EQ also set).
VS illegal character (EQ also set).
A,X,Y preserved.
CHKEOR
CHKEOR checks the character in the A register for an end of record marker.
On entry: A contains character to be checked.
On exit: EQ end of record.
CS end of file (EQ also set).
VS space character (EQ also set).
A,X,Y preserved.
SIZFLD
SIZFLD is provided to allow you to determine the size of a field. First of
all you should locate the field, using one of the field locator routines
such GETFLD, which set up TEMP06. Then call SIZFLD.
On entry: TEMP06 points to the beginning of the
field.
On exit: A,Y have length of field in characters.
EQ zero length field.
X preserved.
TEMP06 preserved.
CMPFLD
CMPFLD compares the values of two fields of the same type, and sets the 6502
flags register like the CMP instruction. TEMP07 points to the first field
(equivalent to the contents of the 6502 A register in the CMP instruction),
and TEMP06 points to the second field. If the two fields being compared are
strings, then wildcards are allowed in the second string.
On entry: A contains the field type: A, N, D or Y; must
be in upper case.
TEMP07 points to field 1.
TEMP06 points to field 2.
On exit: VS error in one of the fields supplied: eg
illegal date; result not valid.
C flag set according to compare.
Z flag set according to compare.
A,X,Y undefined.
SCHFLD
SCHFLD is used to find the number of a field, given its name. It searches
the list of fields in the format file until it finds one that fits the name
given. The name that you specify can obtain wild cards: the single wildcard
"?", and the multiple wildcard "*" are both allowed. SCHFLD will always
return the first field in the format file that fits the name you have given.
You can either continue searching for more fields by using the SCHFLD call
described next.
The name of the field is set up in the 16 byte LWORK area. It should be
terminated by a null, or an end of field marker. It must not be longer then
16 bytes, including the delimiter.
On entry: LWORK contains name to search for; maximum of 16
bytes including delimiter; delimiter null
or end of field marker; wildcards "?" and
"*" valid.
On exit: CS no field found to match the name; A has
error code.
CC field found OK; field number in X.
SCHFLN
After calling SCHFLD, you can search for other fields which also fit the
field specification that you gave given, by making repeated calls to SCHFLN.
Before you call SCHFLN, you must have called SCHFLD first, to start the
sequence, and this call must have successfully found a field.
You can keep calling SCHFLN until the call returns with the Carry flag set
to indicate that it has found no more fields.
On entry: Must have called SCHFLD first, and this must have
returned with the Carry flag clear.
A Contains field number to start searching
from. This should be one more than the last value
that SCHFLD or SCHFLN returned in X.
On exit: CS no more fields found; A has error code (report only
if required).
CC field found; field number in X.
GETWID
GETWID returns the display width of a field, as defined in the format file.
If there is no display width defined, a series of defaults comes into
action.
Display width defined Display width
No display width, Sheet mode 18
No display width, Card mode 0
On entry: X contains number of field for which
width is required.
On exit: CS field doesn't exit.
CC field found; A has display width.
X preserved.
Y undefined.
00000000 0d 43 48 4b 45 4f 46 0d 0d 43 48 4b 45 4f 46 20 |.CHKEOF..CHKEOF | 00000010 63 68 65 63 6b 73 20 74 68 65 20 63 68 61 72 61 |checks the chara| 00000020 63 74 65 72 20 69 6e 20 74 68 65 20 41 20 72 65 |cter in the A re| 00000030 67 69 73 74 65 72 20 66 6f 72 20 61 6e 20 65 6e |gister for an en| 00000040 64 20 6f 66 20 66 69 65 6c 64 20 6d 61 72 6b 65 |d of field marke| 00000050 72 2e 20 0d 49 74 20 73 68 6f 75 6c 64 20 62 65 |r. .It should be| 00000060 20 75 73 65 64 20 72 61 74 68 65 72 20 74 68 61 | used rather tha| 00000070 6e 20 63 68 65 63 6b 69 6e 67 20 66 6f 72 20 74 |n checking for t| 00000080 68 65 20 63 68 61 72 61 63 74 65 72 20 65 78 70 |he character exp| 00000090 6c 69 63 69 74 6c 79 20 73 69 6e 63 65 20 69 74 |licitly since it| 000000a0 0d 68 61 6e 64 6c 65 73 20 63 6c 61 73 73 65 73 |.handles classes| 000000b0 20 6f 66 20 63 68 61 72 61 63 74 65 72 73 20 72 | of characters r| 000000c0 61 74 68 65 72 20 74 68 61 6e 20 73 69 6e 67 6c |ather than singl| 000000d0 65 20 76 61 6c 75 65 73 2e 20 20 47 65 6e 65 72 |e values. Gener| 000000e0 61 6c 6c 79 2c 20 69 74 20 69 73 0d 6e 6f 74 20 |ally, it is.not | 000000f0 6e 65 63 65 73 73 61 72 79 20 74 6f 20 64 65 74 |necessary to det| 00000100 65 63 74 20 69 6c 6c 65 67 61 6c 20 63 68 61 72 |ect illegal char| 00000110 61 63 74 65 72 73 20 65 78 70 6c 69 63 69 74 6c |acters explicitl| 00000120 79 2c 20 69 74 20 69 73 20 65 6e 6f 75 67 68 20 |y, it is enough | 00000130 74 6f 0d 64 65 74 65 63 74 20 74 68 65 6d 20 61 |to.detect them a| 00000140 73 20 61 6e 20 65 6e 64 20 6f 66 20 66 69 65 6c |s an end of fiel| 00000150 64 20 6d 61 72 6b 65 72 2e 0d 0d 4f 6e 20 65 6e |d marker...On en| 00000160 74 72 79 3a 20 20 20 20 20 20 20 41 20 20 20 20 |try: A | 00000170 20 20 20 20 20 20 20 20 20 20 20 63 6f 6e 74 61 | conta| 00000180 69 6e 73 20 63 68 61 72 61 63 74 65 72 20 76 61 |ins character va| 00000190 6c 75 65 20 74 6f 20 62 65 20 63 68 65 63 6b 65 |lue to be checke| 000001a0 64 2e 0d 0d 4f 6e 20 65 78 69 74 3a 20 20 20 20 |d...On exit: | 000001b0 20 20 20 20 45 51 20 20 20 20 20 20 20 20 20 20 | EQ | 000001c0 20 20 20 20 65 6e 64 20 6f 66 20 66 69 65 6c 64 | end of field| 000001d0 2e 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |.. | 000001e0 20 20 43 53 20 20 20 20 20 20 20 20 20 20 20 20 | CS | 000001f0 20 20 65 6e 64 20 6f 66 20 72 65 63 6f 72 64 20 | end of record | 00000200 28 45 51 20 61 6c 73 6f 20 73 65 74 29 2e 0d 0d |(EQ also set)...| 00000210 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000220 56 53 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |VS | 00000230 69 6c 6c 65 67 61 6c 20 63 68 61 72 61 63 74 65 |illegal characte| 00000240 72 20 28 45 51 20 61 6c 73 6f 20 73 65 74 29 2e |r (EQ also set).| 00000250 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |. | 00000260 20 41 2c 58 2c 59 20 20 20 20 20 20 20 20 20 20 | A,X,Y | 00000270 20 70 72 65 73 65 72 76 65 64 2e 0d 0d 0d 43 48 | preserved....CH| 00000280 4b 45 4f 52 0d 0d 43 48 4b 45 4f 52 20 20 63 68 |KEOR..CHKEOR ch| 00000290 65 63 6b 73 20 74 68 65 20 63 68 61 72 61 63 74 |ecks the charact| 000002a0 65 72 20 69 6e 20 74 68 65 20 41 20 72 65 67 69 |er in the A regi| 000002b0 73 74 65 72 20 66 6f 72 20 61 6e 20 65 6e 64 20 |ster for an end | 000002c0 6f 66 20 72 65 63 6f 72 64 20 6d 61 72 6b 65 72 |of record marker| 000002d0 2e 0d 0d 4f 6e 20 65 6e 74 72 79 3a 20 20 20 20 |...On entry: | 000002e0 20 20 20 20 20 20 20 20 20 20 20 41 20 20 20 20 | A | 000002f0 20 20 20 20 20 20 20 20 20 20 20 63 6f 6e 74 61 | conta| 00000300 69 6e 73 20 63 68 61 72 61 63 74 65 72 20 74 6f |ins character to| 00000310 20 62 65 20 63 68 65 63 6b 65 64 2e 0d 0d 4f 6e | be checked...On| 00000320 20 65 78 69 74 3a 20 20 20 20 20 20 20 20 20 20 | exit: | 00000330 20 20 20 20 20 20 45 51 20 20 20 20 20 20 20 20 | EQ | 00000340 20 20 20 20 20 20 65 6e 64 20 6f 66 20 72 65 63 | end of rec| 00000350 6f 72 64 2e 0d 20 20 20 20 20 20 20 20 20 20 20 |ord.. | 00000360 20 20 20 20 20 20 20 20 20 20 20 20 20 43 53 20 | CS | 00000370 20 20 20 20 20 20 20 20 20 20 20 20 20 65 6e 64 | end| 00000380 20 6f 66 20 66 69 6c 65 20 28 45 51 20 61 6c 73 | of file (EQ als| 00000390 6f 20 73 65 74 29 2e 0d 20 20 20 20 20 20 20 20 |o set).. | 000003a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000003b0 56 53 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |VS | 000003c0 73 70 61 63 65 20 63 68 61 72 61 63 74 65 72 20 |space character | 000003d0 28 45 51 20 61 6c 73 6f 20 73 65 74 29 2e 0d 20 |(EQ also set).. | 000003e0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000003f0 20 20 20 20 20 20 20 41 2c 58 2c 59 20 20 20 20 | A,X,Y | 00000400 20 20 20 20 20 20 20 70 72 65 73 65 72 76 65 64 | preserved| 00000410 2e 0d 0d 0d 53 49 5a 46 4c 44 0d 0d 53 49 5a 46 |....SIZFLD..SIZF| 00000420 4c 44 20 69 73 20 70 72 6f 76 69 64 65 64 20 74 |LD is provided t| 00000430 6f 20 61 6c 6c 6f 77 20 79 6f 75 20 74 6f 20 64 |o allow you to d| 00000440 65 74 65 72 6d 69 6e 65 20 74 68 65 20 73 69 7a |etermine the siz| 00000450 65 20 6f 66 20 61 20 66 69 65 6c 64 2e 20 20 46 |e of a field. F| 00000460 69 72 73 74 20 6f 66 0d 61 6c 6c 20 79 6f 75 20 |irst of.all you | 00000470 73 68 6f 75 6c 64 20 6c 6f 63 61 74 65 20 74 68 |should locate th| 00000480 65 20 66 69 65 6c 64 2c 20 75 73 69 6e 67 20 6f |e field, using o| 00000490 6e 65 20 6f 66 20 74 68 65 20 66 69 65 6c 64 20 |ne of the field | 000004a0 6c 6f 63 61 74 6f 72 20 72 6f 75 74 69 6e 65 73 |locator routines| 000004b0 0d 73 75 63 68 20 47 45 54 46 4c 44 2c 20 77 68 |.such GETFLD, wh| 000004c0 69 63 68 20 73 65 74 20 75 70 20 54 45 4d 50 30 |ich set up TEMP0| 000004d0 36 2e 20 20 54 68 65 6e 20 63 61 6c 6c 20 53 49 |6. Then call SI| 000004e0 5a 46 4c 44 2e 0d 0d 4f 6e 20 65 6e 74 72 79 3a |ZFLD...On entry:| 000004f0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 54 | T| 00000500 45 4d 50 30 36 20 20 20 20 20 20 20 20 20 20 70 |EMP06 p| 00000510 6f 69 6e 74 73 20 74 6f 20 74 68 65 20 62 65 67 |oints to the beg| 00000520 69 6e 6e 69 6e 67 20 6f 66 20 74 68 65 0d 20 20 |inning of the. | 00000530 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | * 00000550 20 20 20 20 20 20 66 69 65 6c 64 2e 0d 0d 4f 6e | field...On| 00000560 20 65 78 69 74 3a 20 20 20 20 20 20 20 20 20 20 | exit: | 00000570 20 20 20 20 20 20 41 2c 59 20 20 20 20 20 20 20 | A,Y | 00000580 20 20 20 20 20 20 68 61 76 65 20 6c 65 6e 67 74 | have lengt| 00000590 68 20 6f 66 20 66 69 65 6c 64 20 69 6e 20 63 68 |h of field in ch| 000005a0 61 72 61 63 74 65 72 73 2e 0d 20 20 20 20 20 20 |aracters.. | 000005b0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000005c0 20 20 45 51 20 20 20 20 20 20 20 20 20 20 20 20 | EQ | 000005d0 20 20 7a 65 72 6f 20 6c 65 6e 67 74 68 20 66 69 | zero length fi| 000005e0 65 6c 64 2e 0d 20 20 20 20 20 20 20 20 20 20 20 |eld.. | 000005f0 20 20 20 20 20 20 20 20 20 20 20 20 20 58 20 20 | X | 00000600 20 20 20 20 20 20 20 20 20 20 20 20 20 70 72 65 | pre| 00000610 73 65 72 76 65 64 2e 0d 20 20 20 20 20 20 20 20 |served.. | 00000620 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000630 54 45 4d 50 30 36 20 20 20 20 20 20 20 20 20 20 |TEMP06 | 00000640 70 72 65 73 65 72 76 65 64 2e 0d 0d 0d 43 4d 50 |preserved....CMP| 00000650 46 4c 44 0d 0d 43 4d 50 46 4c 44 20 63 6f 6d 70 |FLD..CMPFLD comp| 00000660 61 72 65 73 20 74 68 65 20 76 61 6c 75 65 73 20 |ares the values | 00000670 6f 66 20 74 77 6f 20 66 69 65 6c 64 73 20 6f 66 |of two fields of| 00000680 20 74 68 65 20 73 61 6d 65 20 74 79 70 65 2c 20 | the same type, | 00000690 61 6e 64 20 73 65 74 73 20 74 68 65 20 36 35 30 |and sets the 650| 000006a0 32 0d 66 6c 61 67 73 20 72 65 67 69 73 74 65 72 |2.flags register| 000006b0 20 6c 69 6b 65 20 74 68 65 20 43 4d 50 20 69 6e | like the CMP in| 000006c0 73 74 72 75 63 74 69 6f 6e 2e 20 20 54 45 4d 50 |struction. TEMP| 000006d0 30 37 20 70 6f 69 6e 74 73 20 74 6f 20 74 68 65 |07 points to the| 000006e0 20 66 69 72 73 74 20 66 69 65 6c 64 0d 28 65 71 | first field.(eq| 000006f0 75 69 76 61 6c 65 6e 74 20 74 6f 20 74 68 65 20 |uivalent to the | 00000700 63 6f 6e 74 65 6e 74 73 20 6f 66 20 74 68 65 20 |contents of the | 00000710 36 35 30 32 20 41 20 72 65 67 69 73 74 65 72 20 |6502 A register | 00000720 69 6e 20 74 68 65 20 43 4d 50 20 69 6e 73 74 72 |in the CMP instr| 00000730 75 63 74 69 6f 6e 29 2c 0d 61 6e 64 20 54 45 4d |uction),.and TEM| 00000740 50 30 36 20 70 6f 69 6e 74 73 20 74 6f 20 74 68 |P06 points to th| 00000750 65 20 73 65 63 6f 6e 64 20 66 69 65 6c 64 2e 20 |e second field. | 00000760 20 49 66 20 74 68 65 20 74 77 6f 20 66 69 65 6c | If the two fiel| 00000770 64 73 20 62 65 69 6e 67 20 63 6f 6d 70 61 72 65 |ds being compare| 00000780 64 20 61 72 65 0d 73 74 72 69 6e 67 73 2c 20 74 |d are.strings, t| 00000790 68 65 6e 20 77 69 6c 64 63 61 72 64 73 20 61 72 |hen wildcards ar| 000007a0 65 20 61 6c 6c 6f 77 65 64 20 69 6e 20 74 68 65 |e allowed in the| 000007b0 20 73 65 63 6f 6e 64 20 73 74 72 69 6e 67 2e 0d | second string..| 000007c0 0d 4f 6e 20 65 6e 74 72 79 3a 20 20 20 20 20 20 |.On entry: | 000007d0 20 41 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | A | 000007e0 20 63 6f 6e 74 61 69 6e 73 20 74 68 65 20 66 69 | contains the fi| 000007f0 65 6c 64 20 74 79 70 65 3a 20 41 2c 20 4e 2c 20 |eld type: A, N, | 00000800 44 20 6f 72 20 59 3b 20 6d 75 73 74 0d 20 20 20 |D or Y; must. | 00000810 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000820 20 20 20 20 20 20 20 20 20 20 20 20 20 62 65 20 | be | 00000830 69 6e 20 75 70 70 65 72 20 63 61 73 65 2e 0d 20 |in upper case.. | 00000840 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 54 | T| 00000850 45 4d 50 30 37 20 20 20 20 20 20 20 20 20 20 70 |EMP07 p| 00000860 6f 69 6e 74 73 20 74 6f 20 66 69 65 6c 64 20 31 |oints to field 1| 00000870 2e 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |.. | 00000880 20 20 54 45 4d 50 30 36 20 20 20 20 20 20 20 20 | TEMP06 | 00000890 20 20 70 6f 69 6e 74 73 20 74 6f 20 66 69 65 6c | points to fiel| 000008a0 64 20 32 2e 0d 0d 4f 6e 20 65 78 69 74 3a 20 20 |d 2...On exit: | 000008b0 20 20 20 20 20 20 56 53 20 20 20 20 20 20 20 20 | VS | 000008c0 20 20 20 20 20 20 65 72 72 6f 72 20 69 6e 20 6f | error in o| 000008d0 6e 65 20 6f 66 20 74 68 65 20 66 69 65 6c 64 73 |ne of the fields| 000008e0 20 73 75 70 70 6c 69 65 64 3a 20 65 67 0d 20 20 | supplied: eg. | 000008f0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000900 20 20 20 20 20 20 20 20 20 20 20 20 20 20 69 6c | il| 00000910 6c 65 67 61 6c 20 64 61 74 65 3b 20 72 65 73 75 |legal date; resu| 00000920 6c 74 20 6e 6f 74 20 76 61 6c 69 64 2e 0d 20 20 |lt not valid.. | 00000930 20 20 20 20 20 20 20 20 20 20 20 20 20 20 43 20 | C | 00000940 66 6c 61 67 20 20 20 20 20 20 20 20 20 20 73 65 |flag se| 00000950 74 20 61 63 63 6f 72 64 69 6e 67 20 74 6f 20 63 |t according to c| 00000960 6f 6d 70 61 72 65 2e 0d 20 20 20 20 20 20 20 20 |ompare.. | 00000970 20 20 20 20 20 20 20 20 5a 20 66 6c 61 67 20 20 | Z flag | 00000980 20 20 20 20 20 20 20 20 73 65 74 20 61 63 63 6f | set acco| 00000990 72 64 69 6e 67 20 74 6f 20 63 6f 6d 70 61 72 65 |rding to compare| 000009a0 2e 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |.. | 000009b0 20 20 41 2c 58 2c 59 20 20 20 20 20 20 20 20 20 | A,X,Y | 000009c0 20 20 75 6e 64 65 66 69 6e 65 64 2e 0d 0d 0d 53 | undefined....S| 000009d0 43 48 46 4c 44 0d 0d 53 43 48 46 4c 44 20 69 73 |CHFLD..SCHFLD is| 000009e0 20 75 73 65 64 20 74 6f 20 66 69 6e 64 20 74 68 | used to find th| 000009f0 65 20 6e 75 6d 62 65 72 20 6f 66 20 61 20 66 69 |e number of a fi| 00000a00 65 6c 64 2c 20 67 69 76 65 6e 20 69 74 73 20 6e |eld, given its n| 00000a10 61 6d 65 2e 20 20 49 74 20 73 65 61 72 63 68 65 |ame. It searche| 00000a20 73 0d 74 68 65 20 6c 69 73 74 20 6f 66 20 66 69 |s.the list of fi| 00000a30 65 6c 64 73 20 69 6e 20 74 68 65 20 66 6f 72 6d |elds in the form| 00000a40 61 74 20 66 69 6c 65 20 75 6e 74 69 6c 20 69 74 |at file until it| 00000a50 20 66 69 6e 64 73 20 6f 6e 65 20 74 68 61 74 20 | finds one that | 00000a60 66 69 74 73 20 74 68 65 20 6e 61 6d 65 0d 67 69 |fits the name.gi| 00000a70 76 65 6e 2e 20 20 54 68 65 20 6e 61 6d 65 20 74 |ven. The name t| 00000a80 68 61 74 20 79 6f 75 20 73 70 65 63 69 66 79 20 |hat you specify | 00000a90 63 61 6e 20 6f 62 74 61 69 6e 20 77 69 6c 64 20 |can obtain wild | 00000aa0 63 61 72 64 73 3a 20 74 68 65 20 73 69 6e 67 6c |cards: the singl| 00000ab0 65 20 77 69 6c 64 63 61 72 64 0d 22 3f 22 2c 20 |e wildcard."?", | 00000ac0 61 6e 64 20 74 68 65 20 6d 75 6c 74 69 70 6c 65 |and the multiple| 00000ad0 20 77 69 6c 64 63 61 72 64 20 22 2a 22 20 61 72 | wildcard "*" ar| 00000ae0 65 20 62 6f 74 68 20 61 6c 6c 6f 77 65 64 2e 20 |e both allowed. | 00000af0 20 53 43 48 46 4c 44 20 77 69 6c 6c 20 61 6c 77 | SCHFLD will alw| 00000b00 61 79 73 0d 72 65 74 75 72 6e 20 74 68 65 20 66 |ays.return the f| 00000b10 69 72 73 74 20 66 69 65 6c 64 20 69 6e 20 74 68 |irst field in th| 00000b20 65 20 66 6f 72 6d 61 74 20 66 69 6c 65 20 74 68 |e format file th| 00000b30 61 74 20 66 69 74 73 20 74 68 65 20 6e 61 6d 65 |at fits the name| 00000b40 20 79 6f 75 20 68 61 76 65 20 67 69 76 65 6e 2e | you have given.| 00000b50 20 0d 59 6f 75 20 63 61 6e 20 65 69 74 68 65 72 | .You can either| 00000b60 20 63 6f 6e 74 69 6e 75 65 20 73 65 61 72 63 68 | continue search| 00000b70 69 6e 67 20 66 6f 72 20 6d 6f 72 65 20 66 69 65 |ing for more fie| 00000b80 6c 64 73 20 62 79 20 75 73 69 6e 67 20 74 68 65 |lds by using the| 00000b90 20 53 43 48 46 4c 44 20 63 61 6c 6c 0d 64 65 73 | SCHFLD call.des| 00000ba0 63 72 69 62 65 64 20 6e 65 78 74 2e 0d 0d 54 68 |cribed next...Th| 00000bb0 65 20 6e 61 6d 65 20 6f 66 20 74 68 65 20 66 69 |e name of the fi| 00000bc0 65 6c 64 20 69 73 20 73 65 74 20 75 70 20 69 6e |eld is set up in| 00000bd0 20 74 68 65 20 31 36 20 62 79 74 65 20 4c 57 4f | the 16 byte LWO| 00000be0 52 4b 20 61 72 65 61 2e 20 20 49 74 20 73 68 6f |RK area. It sho| 00000bf0 75 6c 64 20 62 65 0d 74 65 72 6d 69 6e 61 74 65 |uld be.terminate| 00000c00 64 20 62 79 20 61 20 6e 75 6c 6c 2c 20 6f 72 20 |d by a null, or | 00000c10 61 6e 20 65 6e 64 20 6f 66 20 66 69 65 6c 64 20 |an end of field | 00000c20 6d 61 72 6b 65 72 2e 20 20 49 74 20 6d 75 73 74 |marker. It must| 00000c30 20 6e 6f 74 20 62 65 20 6c 6f 6e 67 65 72 20 74 | not be longer t| 00000c40 68 65 6e 0d 31 36 20 62 79 74 65 73 2c 20 69 6e |hen.16 bytes, in| 00000c50 63 6c 75 64 69 6e 67 20 74 68 65 20 64 65 6c 69 |cluding the deli| 00000c60 6d 69 74 65 72 2e 0d 0d 4f 6e 20 65 6e 74 72 79 |miter...On entry| 00000c70 3a 20 20 20 20 20 20 20 4c 57 4f 52 4b 20 20 20 |: LWORK | 00000c80 20 20 20 20 20 20 20 20 63 6f 6e 74 61 69 6e 73 | contains| 00000c90 20 6e 61 6d 65 20 74 6f 20 73 65 61 72 63 68 20 | name to search | 00000ca0 66 6f 72 3b 20 6d 61 78 69 6d 75 6d 20 6f 66 20 |for; maximum of | 00000cb0 31 36 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 |16. | 00000cc0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000cd0 20 20 20 62 79 74 65 73 20 69 6e 63 6c 75 64 69 | bytes includi| 00000ce0 6e 67 20 64 65 6c 69 6d 69 74 65 72 3b 20 64 65 |ng delimiter; de| 00000cf0 6c 69 6d 69 74 65 72 20 6e 75 6c 6c 0d 20 20 20 |limiter null. | 00000d00 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000d10 20 20 20 20 20 20 20 20 20 20 20 20 20 6f 72 20 | or | 00000d20 65 6e 64 20 6f 66 20 66 69 65 6c 64 20 6d 61 72 |end of field mar| 00000d30 6b 65 72 3b 20 77 69 6c 64 63 61 72 64 73 20 22 |ker; wildcards "| 00000d40 3f 22 20 61 6e 64 0d 20 20 20 20 20 20 20 20 20 |?" and. | 00000d50 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000d60 20 20 20 20 20 20 20 22 2a 22 20 76 61 6c 69 64 | "*" valid| 00000d70 2e 0d 0d 4f 6e 20 65 78 69 74 3a 20 20 20 20 20 |...On exit: | 00000d80 20 20 20 43 53 20 20 20 20 20 20 20 20 20 20 20 | CS | 00000d90 20 20 20 6e 6f 20 66 69 65 6c 64 20 66 6f 75 6e | no field foun| 00000da0 64 20 74 6f 20 6d 61 74 63 68 20 74 68 65 20 6e |d to match the n| 00000db0 61 6d 65 3b 20 41 20 68 61 73 0d 20 20 20 20 20 |ame; A has. | 00000dc0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000dd0 20 20 20 20 20 20 20 20 20 20 20 65 72 72 6f 72 | error| 00000de0 20 63 6f 64 65 2e 0d 20 20 20 20 20 20 20 20 20 | code.. | 00000df0 20 20 20 20 20 20 20 43 43 20 20 20 20 20 20 20 | CC | 00000e00 20 20 20 20 20 20 20 66 69 65 6c 64 20 66 6f 75 | field fou| 00000e10 6e 64 20 4f 4b 3b 20 66 69 65 6c 64 20 6e 75 6d |nd OK; field num| 00000e20 62 65 72 20 69 6e 20 58 2e 0d 0d 0d 53 43 48 46 |ber in X....SCHF| 00000e30 4c 4e 0d 0d 41 66 74 65 72 20 63 61 6c 6c 69 6e |LN..After callin| 00000e40 67 20 53 43 48 46 4c 44 2c 20 79 6f 75 20 63 61 |g SCHFLD, you ca| 00000e50 6e 20 73 65 61 72 63 68 20 66 6f 72 20 6f 74 68 |n search for oth| 00000e60 65 72 20 66 69 65 6c 64 73 20 77 68 69 63 68 20 |er fields which | 00000e70 61 6c 73 6f 20 66 69 74 20 74 68 65 0d 66 69 65 |also fit the.fie| 00000e80 6c 64 20 73 70 65 63 69 66 69 63 61 74 69 6f 6e |ld specification| 00000e90 20 74 68 61 74 20 79 6f 75 20 67 61 76 65 20 67 | that you gave g| 00000ea0 69 76 65 6e 2c 20 62 79 20 6d 61 6b 69 6e 67 20 |iven, by making | 00000eb0 72 65 70 65 61 74 65 64 20 63 61 6c 6c 73 20 74 |repeated calls t| 00000ec0 6f 20 53 43 48 46 4c 4e 2e 20 0d 42 65 66 6f 72 |o SCHFLN. .Befor| 00000ed0 65 20 79 6f 75 20 63 61 6c 6c 20 53 43 48 46 4c |e you call SCHFL| 00000ee0 4e 2c 20 79 6f 75 20 6d 75 73 74 20 68 61 76 65 |N, you must have| 00000ef0 20 63 61 6c 6c 65 64 20 53 43 48 46 4c 44 20 66 | called SCHFLD f| 00000f00 69 72 73 74 2c 20 74 6f 20 73 74 61 72 74 20 74 |irst, to start t| 00000f10 68 65 0d 73 65 71 75 65 6e 63 65 2c 20 61 6e 64 |he.sequence, and| 00000f20 20 74 68 69 73 20 63 61 6c 6c 20 6d 75 73 74 20 | this call must | 00000f30 68 61 76 65 20 73 75 63 63 65 73 73 66 75 6c 6c |have successfull| 00000f40 79 20 66 6f 75 6e 64 20 61 20 66 69 65 6c 64 2e |y found a field.| 00000f50 0d 0d 59 6f 75 20 63 61 6e 20 6b 65 65 70 20 63 |..You can keep c| 00000f60 61 6c 6c 69 6e 67 20 53 43 48 46 4c 4e 20 75 6e |alling SCHFLN un| 00000f70 74 69 6c 20 74 68 65 20 63 61 6c 6c 20 72 65 74 |til the call ret| 00000f80 75 72 6e 73 20 77 69 74 68 20 74 68 65 20 43 61 |urns with the Ca| 00000f90 72 72 79 20 66 6c 61 67 20 73 65 74 0d 74 6f 20 |rry flag set.to | 00000fa0 69 6e 64 69 63 61 74 65 20 74 68 61 74 20 69 74 |indicate that it| 00000fb0 20 68 61 73 20 66 6f 75 6e 64 20 6e 6f 20 6d 6f | has found no mo| 00000fc0 72 65 20 66 69 65 6c 64 73 2e 0d 0d 4f 6e 20 65 |re fields...On e| 00000fd0 6e 74 72 79 3a 20 20 20 20 20 20 20 20 20 20 20 |ntry: | 00000fe0 20 20 20 20 4d 75 73 74 20 68 61 76 65 20 63 61 | Must have ca| 00000ff0 6c 6c 65 64 20 53 43 48 46 4c 44 20 66 69 72 73 |lled SCHFLD firs| 00001000 74 2c 20 61 6e 64 20 74 68 69 73 20 6d 75 73 74 |t, and this must| 00001010 20 68 61 76 65 0d 20 20 20 20 20 20 20 20 20 20 | have. | 00001020 20 20 20 20 20 20 20 20 20 20 20 20 20 20 72 65 | re| 00001030 74 75 72 6e 65 64 20 77 69 74 68 20 74 68 65 20 |turned with the | 00001040 43 61 72 72 79 20 66 6c 61 67 20 63 6c 65 61 72 |Carry flag clear| 00001050 2e 0d 20 20 20 20 20 20 20 20 20 20 20 41 20 20 |.. A | 00001060 20 20 20 20 20 20 20 20 20 20 43 6f 6e 74 61 69 | Contai| 00001070 6e 73 20 66 69 65 6c 64 20 6e 75 6d 62 65 72 20 |ns field number | 00001080 74 6f 20 73 74 61 72 74 20 73 65 61 72 63 68 69 |to start searchi| 00001090 6e 67 20 0d 20 20 20 20 20 20 20 20 20 20 20 20 |ng . | 000010a0 20 20 20 20 20 20 20 20 20 20 20 20 66 72 6f 6d | from| 000010b0 2e 20 20 54 68 69 73 20 73 68 6f 75 6c 64 20 62 |. This should b| 000010c0 65 20 6f 6e 65 20 6d 6f 72 65 20 74 68 61 6e 20 |e one more than | 000010d0 74 68 65 20 6c 61 73 74 20 76 61 6c 75 65 0d 20 |the last value. | 000010e0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000010f0 20 20 20 20 20 20 20 74 68 61 74 20 53 43 48 46 | that SCHF| 00001100 4c 44 20 6f 72 20 53 43 48 46 4c 4e 20 72 65 74 |LD or SCHFLN ret| 00001110 75 72 6e 65 64 20 69 6e 20 58 2e 0d 0d 4f 6e 20 |urned in X...On | 00001120 65 78 69 74 3a 20 20 20 43 53 20 20 20 20 20 20 |exit: CS | 00001130 20 20 20 20 20 6e 6f 20 6d 6f 72 65 20 66 69 65 | no more fie| 00001140 6c 64 73 20 66 6f 75 6e 64 3b 20 41 20 68 61 73 |lds found; A has| 00001150 20 65 72 72 6f 72 20 63 6f 64 65 20 20 28 72 65 | error code (re| 00001160 70 6f 72 74 20 6f 6e 6c 79 0d 20 20 20 20 20 20 |port only. | 00001170 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00001180 20 20 69 66 20 72 65 71 75 69 72 65 64 29 2e 0d | if required)..| 00001190 20 20 20 20 20 20 20 20 20 20 20 43 43 20 20 20 | CC | 000011a0 20 20 20 20 20 20 20 20 66 69 65 6c 64 20 66 6f | field fo| 000011b0 75 6e 64 3b 20 66 69 65 6c 64 20 6e 75 6d 62 65 |und; field numbe| 000011c0 72 20 69 6e 20 58 2e 0d 0d 0d 47 45 54 57 49 44 |r in X....GETWID| 000011d0 0d 0d 47 45 54 57 49 44 20 72 65 74 75 72 6e 73 |..GETWID returns| 000011e0 20 74 68 65 20 64 69 73 70 6c 61 79 20 77 69 64 | the display wid| 000011f0 74 68 20 6f 66 20 61 20 66 69 65 6c 64 2c 20 61 |th of a field, a| 00001200 73 20 64 65 66 69 6e 65 64 20 69 6e 20 74 68 65 |s defined in the| 00001210 20 66 6f 72 6d 61 74 20 66 69 6c 65 2e 20 0d 49 | format file. .I| 00001220 66 20 74 68 65 72 65 20 69 73 20 6e 6f 20 64 69 |f there is no di| 00001230 73 70 6c 61 79 20 77 69 64 74 68 20 64 65 66 69 |splay width defi| 00001240 6e 65 64 2c 20 61 20 73 65 72 69 65 73 20 6f 66 |ned, a series of| 00001250 20 64 65 66 61 75 6c 74 73 20 63 6f 6d 65 73 20 | defaults comes | 00001260 69 6e 74 6f 0d 61 63 74 69 6f 6e 2e 0d 0d 44 69 |into.action...Di| 00001270 73 70 6c 61 79 20 77 69 64 74 68 20 64 65 66 69 |splay width defi| 00001280 6e 65 64 20 20 20 20 20 20 20 20 20 20 20 20 20 |ned | 00001290 20 20 20 20 20 20 44 69 73 70 6c 61 79 20 77 69 | Display wi| 000012a0 64 74 68 20 20 0d 4e 6f 20 64 69 73 70 6c 61 79 |dth .No display| 000012b0 20 77 69 64 74 68 2c 20 53 68 65 65 74 20 6d 6f | width, Sheet mo| 000012c0 64 65 20 20 20 20 20 20 20 20 20 20 20 20 31 38 |de 18| 000012d0 20 0d 4e 6f 20 64 69 73 70 6c 61 79 20 77 69 64 | .No display wid| 000012e0 74 68 2c 20 43 61 72 64 20 6d 6f 64 65 20 20 20 |th, Card mode | 000012f0 20 20 20 20 20 20 20 20 20 20 30 20 0d 0d 4f 6e | 0 ..On| 00001300 20 65 6e 74 72 79 3a 20 20 20 20 20 20 20 20 20 | entry: | 00001310 20 20 20 20 20 20 58 20 20 20 20 20 20 20 20 20 | X | 00001320 20 20 20 20 20 20 63 6f 6e 74 61 69 6e 73 20 6e | contains n| 00001330 75 6d 62 65 72 20 6f 66 20 66 69 65 6c 64 20 66 |umber of field f| 00001340 6f 72 20 77 68 69 63 68 0d 20 20 20 20 20 20 20 |or which. | 00001350 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | * 00001370 20 77 69 64 74 68 20 69 73 20 72 65 71 75 69 72 | width is requir| 00001380 65 64 2e 0d 0d 4f 6e 20 65 78 69 74 3a 20 20 20 |ed...On exit: | 00001390 20 20 20 20 20 20 20 20 20 20 20 20 20 43 53 20 | CS | 000013a0 20 20 20 20 20 20 20 20 20 20 20 20 20 66 69 65 | fie| 000013b0 6c 64 20 64 6f 65 73 6e 27 74 20 65 78 69 74 2e |ld doesn't exit.| 000013c0 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |. | 000013d0 20 20 20 20 20 20 20 20 20 43 43 20 20 20 20 20 | CC | 000013e0 20 20 20 20 20 20 20 20 20 66 69 65 6c 64 20 66 | field f| 000013f0 6f 75 6e 64 3b 20 41 20 68 61 73 20 64 69 73 70 |ound; A has disp| 00001400 6c 61 79 20 77 69 64 74 68 2e 0d 20 20 20 20 20 |lay width.. | 00001410 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00001420 20 20 20 58 20 20 20 20 20 20 20 20 20 20 20 20 | X | 00001430 20 20 20 70 72 65 73 65 72 76 65 64 2e 0d 20 20 | preserved.. | 00001440 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00001450 20 20 20 20 20 20 59 20 20 20 20 20 20 20 20 20 | Y | 00001460 20 20 20 20 20 20 75 6e 64 65 66 69 6e 65 64 2e | undefined.| 00001470 0d 0d |..| 00001472
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