test-drb January 2019

test-drb@ccmp.vtda.org

149 participants
213 discussions

wanted back issues IEEE ANNALS OF THE HISTORY OF COMPUTING bound or unbound... dtop us a line off list please.

by jnc＠mercury.lcs.mit.edu

> From: Al Kossow > I do not archive any paper myself. There are quite a few silver-dish lovers; you might be able to raise some funds by listing stuff on eBait (although I can easily see that maybe it would be more hassle than it's worth). > Currently, I am being asked to reduce my backlog inside of Shustek and > am making some hard choices. Can you say anything about this (it sounds troubling)? Can we help in any way? (And the "inside of Shustek" is puzzling - I thought Shustek was a person?) Noel

7 years

PDP-11/45 RSTS/E boot problem

by fritzm＠fritzm.org

Hi all, Some here may know I?ve been working on an 11/45 restoration off and on for some time now. My ?45 currently has floating point, KT11-C mem mgmt, 124 kword MS11-L, and an RK11-C with one restored RK05 drive. Last week I decided to see if I could bring up RSTS/E on the machine. I managed to sysgen a minimal V06C system that can run off a single RK05 pack under simh, but when I transfer that image to the real hardware using pdp11gui it does not seem to completely/successfully boot. The ?Option:? boot loader comes up and sub-commands there seem to be working (in particular, the ?HARDWARE? sub command shows correctly detected hardware and options). When booting RSTS/E, after supplying date and time, the idle pattern starts on the front panel (but just the bottom part, on the data lights). When console is in display register mode, it shows an increasing count. Console input is echo?d, but the INIT banner and subsequent prompts are never printed and the read light on the RK05 flickers continuously as if the system is trying to read the same sector over and over. Figured I?d ping here in case this is a known failure mode to folks more familiar with RSTS/E? Also posted over on the vcfed DEC forum. FWIW, the machine is passing all MAINDEC CPU, MMU, FP, KW11, and RK11 diagnostics. Cheers, ?-FritzM.

7 years

OCR old software listing

by ldkraemer＠gmail.com

I used the libtiff-tools (Debian 8.x - 32 Bit) to extract all 61 .TIF's >from the Multipage .tif file. While the .tif's look descent, and RasterVect shows the .tif properties to be Group 4 Fax (1bpp) with 5100 x 6600 pixels - 300 DPI, I can't get tesseract 3.x, TextBridge Classic 2.0, or Irfanview with KADMOS Plugin to OCR any of the .tif files, with descent results. I'd expect an OCR of 85 to 90 % correct conversion to ASCII text. Typically, one of the three above Software packages will do a descent job of OCRing .tif's of such scans. (Most PDF's end up at 72 x 72 DPI, and converting them to 300 DPI, allows them to be properly OCR'd.) If anyone else has had better luck, I'd like to know what your process is. Thanks. Larry

7 years

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test-drb January 2019