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larsbrinkhoff / pdp10-its-disassembler

Disassembler and other tools for files in ITS formats
GNU General Public License v2.0
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Alto word format #125

Closed larsbrinkhoff closed 2 years ago

larsbrinkhoff commented 2 years ago

The binary .SAV, .REL, and .UNV files here are encoded with five octets per word. https://xeroxalto.computerhistory.org/_cd8_/pup/

larsbrinkhoff commented 2 years ago

The encoding can be described as 0000AAAA BBBBBBBB CCCCCCCC DDDDDDDD EEEEEEEE. The 0 bits in the first octet are ignored when read and presumably should be 0 when written. The ABCDE bits make up a 36-word.