DIGITAL-LOGIC AG MSM586SEN/SEV Manual V1.5E
98
11 REMOTE FUNCTION
Remote works only with the COM 1 port on the MSM586SEN/SEV.
BIOS default settings are normally as follows:
Internal ELAN A J4 COM 1
Internal ELAN B J41 NONE
SUPER I/O C J50 NONE
SUPER I/O D J49 COM 2
More details are available in the separate BIOS manual on our CD and homepage !
11.1 Remote Features
FS FORTH-SYSTEME has added its remote package "Embedded Support Kit" to the AMD ÉlanSC520
BIOS. The Embedded Support Kit allows you to control your target machine from a host computer using ei-
ther a serial or parallel null-modem cable. This is accomplished by transferring all INT10h (video) and
INT16h (keyboard) requests to the host machine, executing the command there, and finally returning the
results back to the target system. The target system seems to behave just like it would use its own VGA card
and keyboard, but in fact it uses the resources of the host computer. Additionally, the target can access the
floppy drive and the harddisk of your host PC. These features are of great value when you bring up your own
board for the first time. In embedded systems, typical PC components are often left away to save costs. A
standard BIOS typically would stop and warn the user that devices are missing. The BIOS has been modified
to go on even if there is no keyboard or display adapter. With the “Embedded Support Kit”, users can almost
work with such machines like they are used to on a standard PC. The BIOS contains support for both serial
and parallel transmission.
11.1.1 The Remote Server REMHOST.EXE
The utility REMHOST is started on the host computer. It listens on the serial or parallel port for incoming tar-
get requests, executes the commands and sends the output values back.
The user can decide on the host machine in a configuration file, which devices the target system should redi-
rect. By default, the target assumes to redirect video and keyboard services.
The following options are available in the configuration file REMHOST.INI:
PORT=1 // COM or LPT port number
LPT * // use parallel port for transmission
// comment this for serial port.
FLOPPY // enable host floppy
FLOPPY=ROMDISK.IMG // use a floppy disk image
WRPROT // simulate write-protection for remote drives
NOKEYB // disable host keyboard
NOVIDEO // disable host video
DUALVIDEO // use target display and remote video simultaneously
Within the configuration file, you can add comments with “//”. Instead of using a real floppy drive, you can
also generate image files of floppy disks. Access to these image files are much faster than to real floppy
disks. Additionally, the image files can be write-protected. So you can build up virtual floppy drives to initially
set up the target’s file system or to start test tools during production.
Floppy disk images can be produced with the utility FDIMAGE. Type “FDIMAGE /H” to get a list of available
options.
Rem:
* not supported, needs a customized BIOS
To Next Page
Loading...