Loper OS » MacIvory

X-Ray Microscopy of Symbolics "Ivory" CPUs.

Published at: 09:02 pm - Thursday February 28 2019

I currently have three Symbolics MacIvory CPUs. (Do you, reader, have one to sell? Please leave a comment!) One is currently installed in a working machine and was not yet molested; the two remaining chips, I obtained in 2017 by bartering away a Symbolics 3620. At some point I will cut one or more of […]

Posted in: Cold Air, Distractions, Hardware, LispMachine, MacIvory, Photo, Physics, Reversing, SoftwareArchaeology, SoftwareSucks, Symbolics, X-Ray by Stanislav 2 Comments

A Solid-State HDD for Symbolics "MacIvory" Lisp Machines.

Published at: 01:01 pm - Sunday January 06 2019

This post concerns the “MacIvory” Model 3 Lisp Machine. It is of interest strictly to bolixologists. This is a recipe for a working replacement of an ancient SCSI HDD, such as found in the MacIvory, with an inexpensive solid-state disk. You will need: A “SCSI2SD” device. Mine is a model 6, but older units may […]

Posted in: Computation, Hardware, Lisp, LispMachine, MacIvory, Photo, ShouldersGiants, SoftwareArchaeology, Symbolics by Stanislav 6 Comments

Symbolics "MacIvory": PCB Photographs.

Published at: 07:12 pm - Saturday December 29 2018

This post concerns the “MacIvory” Model 3 Lisp Machine. It is of interest strictly to bolixologists. Click on a photo to see detailed version. Machine chassis: The Ivory NuBus Board Set (i.e. the LispM itself, the Mac Quadra is otherwise ordinary): “Ivory” NuBus board, component-side: What’s under the labels? Bolix Label Part Notes 115999-B PLUS20L8 […]