AL39-01 erratum: incomplete descriptions for RPD, RPL, and RPT instructions

[Gary Dixon]

The DPS/Level 86 & DPS 8M Multics Processor Manual (AL39-01C) have incomplete descriptions of the RPD, RPL, and RPT instructions. The missing details may be found in the [DPS 8 and DPS 88 Assembly Instructions (DH03-01) | ​http://www.bitsavers.org/pdf/honeywell/series60level66/DH02-01_dps8asm_Jun84.pdf] manual.

The missing information describes how ALM instructions set the various fields in these instructions. The more-complete GCOS manual provides these details. I have verified that these specification details are supported by the equivalent ALM instructions.

The remaining discussion focuses on information missing from the RPD instruction description. Similar information should be provided (based upon descriptions in DH03-01) for the RPL and RPT instructions.

Pertinent missing information for RPD refers to a diagram for the RPD instruction word:
Figure 4-9. Repeat Double (rpd) Instruction Word Format in AL39-01.

[Eric Swenson]

This appears to be a duplicate of https://multics-trac.swenson.org/ticket/231.