[comp.sys.ibm.pc] Any VDISK.SYS like driver for copying to/from AT memory >1 MB ?

izumi@violet.berkeley.edu (08/05/87)

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I have an AT frame grabber whose video RAM is mapped into addresses
above 1 Mega byte. (Extended Memory ?).

I understand that the only way this memory can be accessed under
current PC-DOS / MS-DOS 
is via
a driver like VDISK.SYS (on IBM PC-DOS diskette).

Is there any PD driver source code which provides copying
services between AT memory above 1 Megabyte and regular DOS memory?

I need straight memory copy ( 1 segment is fine) without any formatting
of any kind.

Any lead to such a beast is appreciated.  Thanks in advance.

Izumi Ohzawa
Univ. of California, Berkeley
phone (415) 642-6440
izumi@violet.berkeley.edu
..ucbvax!violet!izumi