Douglas Fields

Credits for things I used on this site: Lisp Machine Font DEC Terminal Modern Font by Dan Mecklenburg Jr. (VT220 terminal font used for VAX/VMS posts) Bitsavers Symbolics Documentation Hugo Static … »

How to format a SCSI disk on the XL1201. First, boot into Lisp. Command: Format SCSI Disk (SCSI address) 1 (keywords) :Sector Size (sector size in bytes [default 1280]) 1280 SCSI device 1 is a SEAGATE … »

The XL1201 mouse is a Logitech 3-button mouse, model number P7-3F-SZ. It has an 8-pin modular jack with a key on one side (in other words, it’s very close to a standard RJ-45 jack but has more … »

This discusses the initial boot of the XL1201 including the PROM and FEP before Genera is fully running. Initial PROM Boot Sequence If you power the XL1201 on and immediately hit a key, you will see … »

Useful LOCAL commands on an XL1201 with the PE36-PCONS model console (part no. 365404) XL User’s Guide - Using Local Commands on the XL LOCAL-D/B Dims/brightens screen LOCAL-Q/L Quiets/loudens … »

Replacing Key Switches Preliminaries Open the keyboard by removing six metal screws Disconnect cable from PCB to case modular jack Remove four screws (with washer and lock washer) holding keyboard in … »

Updated July 8, 2016: For the latest used in my Symbolics XL1201, please see the full capacitor list here. Old Information Key: E = Radial A = Axial Power Supply Manufacturer: TODD Products Corp, … »

This is a test post I use for testing various stuff. (defun xplusone (x) (+ 1 x)) (defun x (y) (+ (- 3 4) (+ 5 6) (* 4 2))) function showMilitaryTime() { if (document.theForm.showMilitary[0].checked) … »