I’ve checked some PDP-8 software and found WHATAMI. That checks what PDP hardware someone has.
/0=UNKNOWN MODEL.
/1=PDP-5.
/2=PDP-8.
/3=PDP-8/S.
/4=LINC-8.
/5=PDP-8/I.
/6=PDP-8/L.
/7=PDP-12.
/10=KK8F [PDP-8/E, F, M, 8A-600 SERIES].
/11=KK8A [PDP-8/A 400 OR SIMILAR].
/12=6100 CHIP [VT78 OR INTERCEPT I].
/13=6120 CHIP [CPU8 OR GIZMO].
/14=DECMATE.
https://www.ibiblio.org/pub/academic/computer-science/history/pdp-8/Generic%20Programs/
As I have an Intersil 6100 on my Festo device, I found the Intercept I. Searching for that, I found this German Retro site with some good photos of an Intersil Intercept Jr. (another computer) and a description on how to print out a papertape with ASCII text.
https://retrobyte.de/intersil-intercept-jr..html
There’s also code and some special memory mapping of the Intersil.
0000 reserved
0001 - 0137 free
0140 - 0177 resered
0200 - 0377 free
3000 - 4777 free
6000 - 7777 ROM IM6312-002
The punchtxt software is from here and has a list of characters like A= 254;9;9;9;254 (all 5 bytes)
https://www.pdp8online.com/ftp/software/demos/punch_text/
Intercept I and II are another trainers. I haven’t found any photo and few info about that.