RANA Systems RanaSystems 13-0010--001, Руководство пользователя

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ELITE SERIES USER MANUAL CP/M ENHANCEMENTS
do. The 56K version of CP/M can he modified to
support the Elite Series products without steal-
ing space from the user’s memory area, because
Rana used a little “hidden~ section of memory in
the 16K RuM/Language Card (which -is required for
56K CP/M) which Microsoft left available. This
small restriction should not prove to be too
much of a hardship since serious Apple if CP/M
users soon find that 44K is just not enough in
which to run some of the more advanced CP/M
programs.
The Apple CP/M operating system addresses disk
drives by a letter followed by a colon, A: B:
etc. up to P:. Apple ][ CP/M selects drives
from the highest slot number first, starting
with slot six, There must he a controller card
in slot six, and any additional controller cards
must he in slot five, etc. Although CP/M as an
operating system recognizes drives A: through
P:, Microsoft’s Apple if version of CP/M has a
necessary limitation of only supporting up to
six drives (A: through F:). The enhanced ver-
sion of Apple if CP/M will support up to eight
drives (A: through H:). This allows all drives
on two four-drive Elite Controllers to he used.
(Of course, four two-drive Disk if controllers
could also be used; or any combination totaling
no more than eight drives.)
On both enhanced and non-enhanced CP/M, drives
A: and B: would he drives one and two on which-
ever type disk controller is in slot six.
Drives C: through H: will change on the enhanced
CP/M if an Elite Controller card is in the
system.
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