DOS & UNIX co-existence on AT&T 6386s: guidelines sought
~XT6561110~Frank McGee~C23~L25~6326~
fmcgee at cuuxb.ATT.COM
Sat Dec 23 04:54:15 AEST 1989
In article <2892 at infmx.UUCP> aland at infmx.UUCP (alan denney) writes:
>As far as I know, the 6386s do not have inherent dual-boot capability,
>so I plan to have the primary UNIX partition as the boot partition
>and boot DOS from floppy when needed. Is this off-base? Can I have
>a DOS partition sitting on one of the drives that comes into play
>only when I boot from a DOS diskette, and have all of the UNIX
>partitions recognizeable when I boot UNIX?
You could also have MSDOS on the first partition, and boot
MSDOS off the hard disk. But /dev/swap will perform better if
MSDOS is a non-bootable partition farther out on the disk (ie,
/dev/swap will be on the faster inner tracks). If you aren't
swapping you won't notice the difference though......
Now here's where I started to wonder....
>Quick note on the planned configurations:
>
> 6386/25 6386/33
>------------------ ------------------
>16 MB memory 16-24 MB memory
>1 135MB ESDI drive 2 300 MB ESDI drives
>1 300MB ESDI drive
>
> both
> ----
> AT&T UNIX System V/386 Rel 3.2.2 and MS-DOS 3.3
> AT&T 125MB Streaming tape unit
> AT&T 329M VGA card & VDC600 VGA monitor
> AT&T 2400 baud external modem
You're okay (as far as I know) to here...
> Consensys PowerPorts 16-terminal serial controller
The last time I checked, these cards require a 512K shared memory area
that starts on a 512K boundary. This limits you to a 12 MB of RAM
configuration, because the 6386/33 supports 4, 8, 12, 16, 24, 28, 32
and 40 MB configurations. Since you need to have a 512K segment for
the card between 0 and 16 MB, you need to have the next lowest memory
configuration; ie, 12 MB. On the older Olivetti 6386's it was
possible to create a memory "hole" for cards; this isn't possible on
the 6386/SX, 6386/25, 6386/33, or Model S. If you install the
Consensys card in a 6386/SX/25/33 with more than 12 MB you won't be
able to address the Consensys card. I suggest you try another card
vendor that uses 64K of RAM on 64k boundaries (ie, it will fit between
512K and 1 MB) such as the Computone, Bell Technologies, or AT&T IPC
1600.
> Consensys PowerStor caching ESDI disk controller
Don't know if this will work, we use the Western Digital 1007A-WA2.
> 3Com 3C503 Ethernet card (also for use with PC-NFS under DOS)
AT&T doesn't have and doesn't sell Unix drivers for the 3C503. AT&T
has two separate and distinct TCP/IP platforms for 386 Unix; we only
support the AT&T TCP/IP Interface for Unix (ie, Micom/Racal-Interlan
product) or the Wollongong Integrated Networking (WIN) TCP/IP 386
over an AT&T StarLAN 10 NAU, EN100, or Fiber NAU card.
Hope you were already aware of these items. Hope you have a happy
holiday season !
--
Frank McGee, AT&T
Tier 3 Complementary Channel Sales Support
attmail!fmcgee
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