3 Nov
2025
3 Nov
'25
1:09 p.m.
On Nov 2, 2025, at 8:25 PM, David Gesswein
<djg(a)pdp8online.com> wrote:
On Sun, Nov 02, 2025 at 02:06:00PM -0500, Paul Koning wrote:
Nice. I looked at one of them and saw a picture of the tape:
https://www.pdp8online.com/ftp/images/system_source/LINC/AJH-LAP6-A-t1.jpg
That's interesting because it shows the tape part number "489", not 480 or
481 which is what is shown in the spec captured on Bitsavers.
Doubly interesting because 489 is the specified tape media type (in 1/2 inch width,
though) for the Electrologica X1 tape drives, which are somewhat DECtape like in that they
support random writing.
paul
Is Dave's setup a DECtape drive, with 10 tracks on 3/4 inch width?
Drive is actually LINCtape with weird tape path so DECtapes need to be
respooled on another drive to LINCtape orientation.
Looks like this
https://www.ricomputermuseum.org/collections-gallery/interesting_computer_i…
All tracks are available from the head separately except mark track which
is why I picked it.
Current project is LINCtapes. Need to do some code changes to merge in my
DECtape decoder. Bottom links are recent stuff.
https://www.pdp8online.com/images/index.shtml
