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To Distribution Date December 14, 1977
From Frank Ludolph Location Palo Alto
Subject Alto Hardware Engineering Changes OrgHnization XEOS
)(ERO)(
Filed on: [XEOS]
As requested at the October Whole Alto World meeting, I, as coordinator, am assuming
responsibility for the distribution of Engineering Orders that apply to the Alto, its
extensions, adapters, and peripherals. Questions about EOs, part numbers, and related
matters may also be directed to this office.
Attached is a list of the current revision levels. It was created to establish a baseline for
the distribution of future changes. If you require documentation of EOs at this or earlier
levels please contact me. The list will be kept up to date and filed on
[XEOS]< Ludolph> EO>Current.bravo.
Frank Ludolph
Coordinator, Whole Alto World
Distribution: C. Anthony, J. Arnaud, J. Cucinitti, B. DeGrasse, W. Duvall, D. Green,
R.Hunt, H. Pangle, D. Sonderegger, W. Winfield, H. Yeary, R. Yost
cc: Liz Bond, Terry Haney, Don Stewart, Doug Stewart
CURRENT ALTO HARDWARE REVISION LEVELS
LEVEL DRAWING DESCRIPTION
ALTO B 216305 BWB Assy
C 216273 Mem Stg. Module
B 216421 Terminator Module
F 216381 Arithmetic Logic Unit
0 216373 Control Board (lK)
B 216484 Control Board (2K)
F 216365 CRAM
E 216389 Disk Control
B 216577 Extender Board
G 216347 Memory Address Interface
E 216312 Menl0ry Data Interface
D 216339 Display Cont. Module
D 216323 Ethernet Module
ALTO II XM B 216645 Mem Address lnt. Module
C 216652 B\VB Assy
A 217115 Mem Data Interface Module
A 216642 2K Control Module
A 216695 1K Control Module
B 216644 128K Mem Stg Module
B 216646 Memory Expansion and Terminator
DISPLAY E