The CNC control software has to have EMS. Without it, it can't use any more
than low memory. It's *old* software, capable of running on a 1981 vintage 5150
IBM PC. So I would assume it knows nothing of newer EMS types with their fancy
features. If only Light Machines, then Intelitek, had bothered to write newer
software for the PLM2000 like they did for the PLM1000.
On Thursday, January 4, 2018, 3:05:06 PM MST, E. Auer <e.a...@jpberlin.de>
wrote:
Some thoughts...
> The storage is an IDE Flash Disk, AKA Disk On Module. It has a 44 pin
> female header connector, same electrical interface as a 2.5" IDE hard
> drive. They're available dirt cheap in sizes from 64 megabytes to 2
> gigabytes, not so cheap in 4 and 8 gigabytes...
You can also use a compact flash (CF) card with a purely mechanical
adapter (CF can speak IDE interface language). They are cheap but I
think DOM can do more I/O transactions per second.
Another idea: Instead of EMS, you could use good old XMS to make a big
ramdisk and then copy everything there on boot. Assuming that you do
not plan to modify files on the machine - modifications would be lost
each time when you shut down or reboot without copying data back from
the ramdisk to the flash disk. The ramdisk would be as fast as the EMS
library of G files in your old software, but would not need EMS. In my
opinion, XMS drivers are more "tame" to use compared to EMS drivers.
If your old software supports EMS 4.0, then you would not need a 64k
page window. This is what the NOEMS option of EMS drivers does: It
skips the creation of the window. Software which understands version
4.0 of EMS can still use EMS without needing a large fixed window.
With DOS in HMA and drivers (if safe and not too fragmented) in UMB,
you will have a lot of low memory available. So depending on how large
those G-Code files are, things should be okay. Note that you can use
UMBPCI to have raw UMB without the hassles of configuring EMS right.
Also, UMBPCI is still maintained for support of many mainboard types.
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