PDP-1 Restoration Project Archive

The Computer History Museum’s PDP-1 Restoration web site is now open to the public. Thanks go to the CHM staff for putting together a nice site, and to the rest of the team for their tireless efforts to make the PDP-1 live again, and to keep it working.
On the page of still photos of [...]

For quite some time now I’ve wanted a color printer, especially one that can handle B-size paper (11 x 17 inches), and one that can print onto printable CD-R and DVD-R media. Traditionally CD-R printers have been very expensive, even though most of them are just modified consumer inkjet printers. I haven’t found [...]

I’m really looking forward to the Vintage Computer Festival 8.0, coming up next weekend (November 5-6, 2005) at the Computer History Museum in Mountain View, California. I’m not exhibiting this year, but it should be a lot of fun. I think the Homebrew Computer Club retrospective should be quite interesting, and there are [...]

The DEC PDP-1 computer at the Computer History Museum has a Type 30 Precision CRT Display with a Type 33 Symbol Generator. The Type 33 allows the computer to more quickly display small symbols (typically characters) using a five by seven dot matrix. The symbol is specified by two 18-bit words. Working [...]

At last night’s meeting of the PDP-1 Restoration Project, we actually used WREC to reform four capacitors out of two of the Type 728 power supplies. In the process I found and fixed a few minor bugs. I need to get a new release (0.02) together. I started compiling a ChangeLog from [...]

Started looking at adding real-time graphing to WREC. The most obvious choices appear to be the gtkplot component of the GtkExtra library, or Guppi. Guppi development seems to be stalled, and I didn’t see any example code or documentation describing how to do the sort of stuff I want. (I noticed that [...]

WREC

A preliminary release of WREC is now available. There’s a tarball on the web page, and a link to information about the subversion source code repository.
WREC Reforms Electrolytic Capacitors using an SCPI-programmable power supply. WREC was written for use on the Computer History Museum PDP-1 Restoration Project, but should be useful to reform [...]

On Tuesday I started a new project, WREC. WREC Reforms Electrolytic Capacitors. We’re going to use it for the PDP-1 Restoration Project at the Computer History Museum.
I’m trying to finish coding WREC and debug it in time for the 7-JAN-2003 meeting of the PDP-1 Restoration Team.