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Inter-Office MenlOranduJll
To Pilot Design Spec Contributors Date January 10, 1978
From Dave Redell Location Palo Alto
Subject Results of second meeting on Organization SDD/SD
the Design Spec.
XEROX
Filed on: PilotDS3.memo
Our second meeting on January 5 assessed the progress so far and established new goals for
getting the various sections submitted for integration. Some modifications to the Table of
Contents were adopted and several authorship assignments were revised:
20 January: Sections submitted for integration into first draft.
31 January: First draft of integrated document distributed.
Some modifications to the Table of Contents were adopted and several authorship
assignments were revised.
5.0 Internal Interfaces (6.0 Algorithms and Databases)
5.1 Low-level Mesa support. [Lauer]
To be converted from a subset of the OIS
Mesa Functional Spec, in conjunction with
Mesa group.
5.2 Input/Output Control System [Jarvis] .
Current draft complete and available for
review; comments solicited.
5.3 Input/Output Drivers
Disks: rigid & local floppy [Jarvis]
Current draft complete and available for
review; comments solicited.
. X-wire & sockets [Dalal]
Exists as notes plus a prototype
implementation; a prose description being
written.
RS232 [Schwartz]
Current draft complete and available for
review; com ments sol icited.
. Results of seeond meeting on the Design Spee 2
Tapes: cassette & 9-track [Jarvis]
Magnetic cards [Jarvis]
Printer [Jarvis]
Display /keyboard/mouse [Jarvis]
Data Line Scanner [Jarvis]
Serial-Interrace [J.arvis]
The six items above are all "in limbo",
pending clarification of requirements; Pitts
will keep an eye on them.
5.4 Dynamic Firmware
Loading Facility [Hankins]
Meetings with Peter Deutsch and others
have raised questions of generality vs.
simplicity; these should be resolved soon.
and the resulting compromise documented.
5.5 File Page Transfer Facility . [Redell]
Very little has' been written here; Steve
Purcell and Paul McJones will help with
the file sections. and one of them may
asume primary responsibility.
. 5.6 Virtual Memory Swapper [MeJones]
. Substantial fragments of this section exist;
the issues seem clear enough to proceed
with a full draft. (NOTE: the Relocated
Memory Manager. formerly section 5.1.
has been subsumed by the swapper.)
5.7 File Manager [Redell]
Nothing has been written here; Steve
Purcell and Paul McJones will help with
the file sections, and one of them may
asume primary responsibility.
5.8 Virtual Memory Manager [MeJones]
Substantial fragments of this section exist;
the issues seem clear enough to proceed
with a full draft.
5.9 Streams [Lauer]
Most of the design exists as a collection of
memos; conversion to design-spec format
is under way.
5.10 Clocks & timers [Lauer]
This section in somewhat in limbo due to
lack of clear requirements; Hugh will keep
an eye on it.
5.1 J Software/ Firmware
Bootload and I nitia lization [Hankins]
This section is somewhat in limbo due to
lack of clear requirements; Hugh will keep
an eye on it.
Results of second meeting on the Design Spec 3
5.12 'Install' Facility [!lnassigned]
This section is a complete unknown; no
one currently has responsibility for it.
5.13 Hardware Roll Can [Jarvis]
The roll-call is essentially part of IOCS
initialization; not all details are clear. but
Pitts will think about it.
5.14 Error Logging
& Auto-reboot [Lynch?]
This section is somewhat in limbo due to
lack of clear requirements; Bill will keep
an eye on it for now.
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