PDP15 singleprecision floatingpoint format corrected on web site

wrote, in part:

By restyled, I simply meant that the panel had a white background over much of the expanse, and that the blue zones over the switches, instead of simply being rectangles with rounded corners, now turned down at the edges in some cases to provide the effect of braces.

I did find one *fairly* high-resolution picture on the Internet of a PDP-15 that was taken from quite an oblique angle, and which enabled me to read many of the legends on the lights.

Comparing that to the picture of the XVM panel, though, several lights are in different positions.

On the 15, as far as I can see:

?? DCH-ACTIVE API-ENABLE PI-ACTIVE PI-???? MAJOR STATES-???? ???? ?? ? ?? ??

CLK EXTD PACT ERROR LINK

POWER RUN INSTRUCTION-0 1 2 3 DEFER DCE1

whereas, on the XVM, as far as I can make out, the top row is

DCH-ACTIVE ACTIVE STATES-0 1 2 3 4 5 6 7 8 API-ENABLE PI-ACTIVE PI-ENABLE MODE-INDEX MAJOR STATES-FOLN MC DEFER EM EXEC TIME STATES-1 2 3

... of course, the text of the manual fills in the details, but right away there is an obvious difference; the DCH-ACTIVE light is not the one on the left.

So, for example, the major states are FETCH INC DEFER EAE EXEC, and that presumably applies to the 15.

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