Octagon PC-500, Руководство пользователя

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19-1
PC-500 user’s manual Transferring files/remote disks
Chapter 19:
Transferring files/remote disks
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Transferring files between the PC-500 and your PC
Once you have established communications between your PC and the
PC-500, you can serially download files to any read/write drive used by
the PC-500. You can also upload files from the PC-500 to your desktop
PC for editing and debugging.
There are two methods to download files through the serial port to the
PC-500:
1. The TRANSFER utility is used to download files, one at a time, to the
PC-500 using the XMODEM protocol. TRANSFER.EXE resides on the
PC-500 BIOS drive and on the PC-500 utility disk and is used to send or
receive files via the serial port (e.g., COM1). TRANSFER.EXE uses the
XMODEM protocol, as does PC SmartLINK. (See the note below on
XMODEM).
2. REMDISK/REMSERV utilities allow access to all of the files on a re-
mote disk drive. REMDISK.EXE and REMSERV.EXE are located on
the PC-500 BIOS drive and the PC-500 utility disk. Once these pro-
grams are executed, single or multiple files can then be transferred to
and from the PC-500 using DOS COPY or XCOPY commands.
TRANSFER.EXE, REMDISK.EXE and REMSERV.EXE are located on
the PC-500 BIOS drive, in the DOS directory, and on the PC-500 utility
disk in the \DOS directory. Refer to the Software utilities appendix for
more information on these programs.
Note XMODEM only transfers files in which the file size is exactly on a 128
byte boundary. If the file size does not fall exactly on the boundary,
XMODEM automatically rounds the file size up to the next 128 byte
boundary with padding characters. For example, a file with a size of
10,000 bytes, will be rounded up to 10,112 bytes, transferred, and
written with the new file size. In most cases, this is not a concern, but
in some instances the XMODEM padding causes problems. The pad-
ding problems become apparent when an application program is expect-
ing a specific file size or is expecting characters other than the padding
characters to be at the end of the file.