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Megatel Quark/100 Specifications Page 56

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------------------,------------~---~-----~
QSYSGEN.COM
-
The
System
Generation
Utility
,____________
'
___
n
_________________________________________________________
__
QSYSGEN
is
a uti l
ity
routine
used
to
put
a system
image
on
the system tracks of a given
logical drive.
QSYSGEN
does
not
destroy
or
alter
any
fi les
on
the destination
diskette,
as
only the system tracks
of
the destination diskette are written.
It
is
necessary
to
"Sysgen"
only those diskettes
which
are to
be
used
as
"system" diskettes (i.e., those diskettes
from
which
the
QUARK
is
to booted).
A special version
of
QSYSGEN
has
been
deveLoped
by
Megatel
for
all
Megatel
floppy disk
systems running under
CP/M
2.2. This
new
version offers
two
advanced
features:
QSYSGEN
wi
lL
copy
from
and
write to
any
diskette with standard or non-standard disk
formats;
QSYSGEN
wiLL
also
read
and
write standard or non-standard configurations of the
CP/M
modules
on
the system tracks.
--------
SYSTEM
IMAGE
CONFIGURATION
---
-----------_._-----
----
When
the
CP/M
2.23 system
is
read
in
by
the
QSYSGEN
either
from
a
fi
le containing the
system created
by
the instaLLation procedures, or
from
the system tracks of a disk, the system
image
in
memory
wilL
look
Like
this:
Memory
Address
System
Modules
900h
980h
1fBOh
3bBOh
3fOOh
4aOOh
4bOOh
4eOOh
bootstrap -
CP/M
standard address
ccp,
bdos
-
CP/M
standard address
bios -
CP/M
standard address
- the remaining are stand along
or
banked
bios
modules
of
the
O/S
system
initialization
terminal emulator
teminal emulator variables
and
stack
memory
management
module
character font data
set
-----
------
--------------,---
TRACK
IMAGE
CONFIGURATION
----------._---_.---------------------------------
We
choose
to write the system
image
to the system tracks in the following sequence
and
si
ze(in
128
byte sectors) :
1) bootstrap - 1 sector
2)
system'initialization,
terminal emulator,
emuLator
variables
and
stack,
and
the
memory
management
moduel
-
37
sectors
3) ccp, bdos,
and
bios -
100
sectors
4)
character font data
set
-
16
sectors
Megatel
Computer
Technologies Toronto,
Canada
Page
S/W-25
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