A reconstruction of the first edition (October 1977) of the LOS Programmers' Manual for the BCL Molecular minicomputer, with some later additions from LOS Bulletins as dated.
LOS, or the Leicester Operating System, took its name from the city in which it was developed. The last known LOS user migrated to UNIX in 1999.
To sample Molecular machine code programming, see the sample application and/or the sort utility system module. These are approximate representations of the original handwritten coding sheets.
Some of these sections are large (up to 250K) and may take a while to download.
DISC HANDLING (DATA RECORDS)
DISC HANDLING (SPOOLING)