Elliott 803 Emulator and Programs

See the individual read me files for more details.

Various Program Tapes

captured using https://github.com/hxw/paper-tape.git

File extensions used

• .hex8 one 8 channel character per line represented as two hex digits [00.ff]
• .hex5 one 5 channel character per line represented as two hex digits [00.1f]
• .h-code UTF-8 right arrow but the rest are ASCII
• .elliott UTF-8 UK currency sign and the rest are ASCII
• .ascii Substitute an ASCII # instead of UK currency sign

Elliott 803 Programs

Included

These are programs I kept copies of some tapes after I left Loughborough Grammar School (Where the Brush 803 was) and was able to recover using a home-built paper tape reader. These include:

• A104 - Algol 60 compiler (both tapes)
• T2 and T102 - The fixed and floating point machine code translators
• H-Code - A compiler developed for Brush Electrical Machines

A note about H-Code. As far as I remember it was written by a Dr. Hogg who possibly later worked at Loughborough University (If anyone knows more, I would be pleased to update). The compiler is a super-set of the Elliott Autocode Language and used the same variable/indexing method (AI4 is like the C equivalent of a[i[4]]). Since variables are only a single character it offered a way to define local variables to provide more. It has subroutines and provides a method to pass multiple parameters and return multiple results.

Missing

• Library routines - we did not have tape copies, only the printed manuals
• Elliott Autocode Compiler - I did not keep a copy of this tape