FOCAL-65 V3D FOR TIM AND KIM-1
Focal is a programming language originating from Digital Equipment, first on the PDP-8.
In 1977 Wayne Wall of the Denver 6502 Group programmed Focal-65 a port to the 6502, based upon the DEC manuals.
A small interpreter (about 5K) for a convenient interpreted language. Floating point 9 digit accuracy. At least two versions were distributed around 1977, one by Aresco, called “Focal V3D” and another by the Program Exchange as representative of the Denver 6502 Group, often called “Focal-65E”
I played with Focal-65 V3D on my KIM-1 in 1978, and preserved the binary and user manual.
In 2023 I finally was given a just readable scan of the listing that was an option of the Focal-65 pack
age. It is a version for the TIM (Jolt, Superjolt, 6530-004).
With it I made a reconstruction of the sources, , of Focal V3D for the TIM to binary, and a port to the KIM-1. Also the Aresco version source is reconstructed and identical to my tape dump of 1978.
Another piece of history preserved!