Unitech MR350MKII manual 2D Set System clock, File Manager, 3C Create or truncate file

2D Set System clock
Entry Parameters:	AH = 2D
	CH = hour (0..23)
	CL = min (0..59)
	DH = sec (0..59)
Returned Values:	AL = 0

int TS_set_time(int hour,int minute,int second,int hund_sec)

{

regs.h.ch = hour; regs.h.cl = minute; regs.h.dh = second; regs.h.dl = hund_sec; regs.h.ah = 0x2d; int86(0x21,®s,®s); return(regs.h.al);

}

3.9.File Manager

When the file is downloaded or uploaded, the working file can not be opened by the application command. As the same result, when the file is opened by application, the host computer can not download or upload with the same file. This limitation is used to protect the file pointer from re-writing and corrupt the file system.

3C Create or truncate file

When a file is created, the file manager searches the file table for a file name matched. If it is found, the corresponding file handle is returned, and the file pointer is reset to the beginning of the file. The actual file size is reset to zero. If the file does not exist in the file table, a file entry is allocated, and memory is assigned.

Entry Parameters:	AH = 3C
	DS:DX = segment:offset of ASCIIZ file name
Returned Values:	if successful : Carry = clear, AX = handle
	if fail : Carry = set, AX = 3

int TS_create_file(char *fn)

{

segregs.ds = FP_SEG(fn); regs.x.dx = FP_OFF(fn); regs.h.ah=0x3C; int86x(0x21,®s,®s,&segregs);

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