/*
**   Copyright 1987 By Perry S. Kivolowitz (ASDG Incorporated) All Rights
**   Reserved to Author. NOT IN THE PUBLIC DOMAIN.
**
**   If you use this software and wish to  become a registered owner please
**   send $10 to:
**         ASDG Incorporated
**         280 River Rd. Suite 54A
**         Piscataway N.J.
**         08854
**         (201) 540 - 9670
**
**   Can't say there's much material benefit from being a registered owner
**   but you will feel better knowing  that you helped defray the recover-
**   able ram  disk's  development  costs.  Also, we will answer technical
**   questions from registered users only and will  distribute new product
**   news to same.
*/

/*
**   Changing Any MountList Parameters Except As Noted Below Will Cause
**   The Recoverable Ram Disk To Cease To Function.
*/

/*
**   IF YOU HAVE SOME FAST RAM:
**
**      Make BufMemType equal to 5.
**      Set HighCyl appropriately.
**
**   IF YOU HAVE ONLY CHIP RAM (NO RAM EXPANSION):
**
**      Make BufMemType equal to 3.
**      Set HighCyl appropriately.
**
**   Increasing the value of Buffers will actually slow down the ram disk.
**
**   The BufMemType flag is actually  the second parameter of the AllocMem
**   calls the kernel will make to  allocate  internal buffers. Making the
**   value places the buffers in Fast ram. A value of 3 places the buffers
**   in Chip ram.
*/

/*
**   Setting HighCyl
**
**   HighCyl determines the maximum size of the recoverable ram disk. It
**   defines the number of tracks there are in the disk. Each track con-
**   tains 16 512 byte blocks (or 8K of information).  Changing  HighCyl
**   and rebooting will cause a fresh (empty) recoverable ram disk to be
**   created.
**
**   It is better to run out  of  space on the recoverable ram disk than
**   to run out of memory. That  is,  don't  set  HighCyl to make a disk
**   larger than your total amount of memory. 
**
**   Remember, the ASDG  Recoverable  Ram  Disk does full dynamic memory
**   management. That is, HighCyl is really just a Maximum size. Setting
**   HighCyl to a large number does *NOT* mean you automatically lose  a
**   lot of memory.
**
**   HighCyl MUST BE ODD!
**
**   Suggested HighCyl Values:
**
**   Fast Ram Installed   HighCyl Value   Max Ram Disk Size
**
**      0                      15            128K
**      512K                   31            256K
**      1Mbyte              63-95            512K-768K
**      2Mbytes             127-191          1Mbyte-1.5Mbytes
**      4Mbytes            255-383**         2Mbytes-3Mbytes
**      8Mbytes           Anything less**
**                          than 1024
**
**   **This version of the ASDG Recoverable Ram Disk has been configured
**   to support ram disks  up  to  2Mbytes in size. That is, the maximum
**   valid value of HighCyl is 255. A  verison  supporting up to 8Mbytes
**   of ram disk is available from ASDG Incorporated.
**
**   REMEMBER: If you have  Fast  Ram  that  autoconfigs, some amount of
**   it will be used by the operating system even before the recoverable
**   ram disk starts  up. So, you've  actually  got about 100K less than
**   you think.
**
**   NOTE: Using Addbuffers with the ASDG Recoverable Ram Disk will 
**   slow the ram disk's performance. 
**
*/

/*
**   Copyright 1987 By Perry S. Kivolowitz (ASDG Incorporated) All Rights
**   Reserved to Author. NOT IN THE PUBLIC DOMAIN.
**
**   The contents of this file:
**
**   May not be distributed by any commercial software or hardware vendor.
**   May not be sold under any guise.
**   Must (please) contain this and copyright information above and below.
**
*/

VD0:       Device = asdg.vdisk.device
           Unit   = 1
           Flags  = 0
           Surfaces  = 1
           BlocksPerTrack = 16
           Priority = 5
           Reserved = 2
           Interleave = 0
           LowCyl = 0
           HighCyl = 63
           Buffers = 5
           BufMemType = 3
#

