CX = total matched times
DX:AX = pointer to current file position (not changed)
42
Search String in Formatted Data File Beginning at the Current
Position
Entry Parameter:
AH = 42H
AL = 5
; search forward (to the end of file)
6
; search backward (to the beginning of
file)
BX = file handle
CH = n
; Total field number in the data record
CL = m
; search mth field
DS:DX = pointer to parameter block
Structure of parameter block for non-fixed length record data
file:
String length :
1 byte
String without ‘\0’ terminator :
N bytes
0x00
1 byte
Field separator character :
1 byte
Structure of parameter block for fixed length record data file:
String length :
1 byte
String without ‘\0’ terminator :
N bytes
Field #1 length:
1 byte
Field #2 length:
1 byte
. .
. .
. .
Field #n length:
1 byte
Return Value: 1) If string is found:
Carry flag = clear
DX:AX = pointer to current file position (at the beginning
of the
matched string)
2) If string is not found:
Carry flag = set
DX:AX = pointer to current file position (not changed)
42
Insert / Delete Data Block to / from File at the Current Position
Entry Parameter:
AH = 42H
AL = 7
; insert
8
; delete
Содержание PT600
Страница 1: ...PT600 Portable Terminal Programming Reference Guide Document number 3506000120...
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Страница 20: ...regs h bh 5 regs h al unsigned char type regs h bl unsigned char status int86 0x21 regs regs...
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Страница 66: ...Host Command STX ESC CMD parameters CS1 CS2 ADDR Acknowledgement ACK Negative ACK NAK...