The following commands were also available on the Atlas Computer Laboratory FR80. The III Displayer program was not very well documented and it was eventually necessary to decompile the III Displayer program to find out what the complete command set actually was. A particular need was larger characters for identification records and this was the main addition made early on.
In the following commands, the 18-bit word is given as 6 octal digits
222000 040000 + N
The value of N is in bits 4 to 17, that is less than 16384. Only the top 4 bits define the op code. N lines will be drawn between the next two visible lines drawn. The current position is reset to its value before the Vector Family command was called.
235000
A point is plotted at the current beam position (CX,XY).
234000 + N (single word) 234400 + N (two word) 040000 + M
The single word command is for greyscale output and sets the intensity to N, the value being in the range 0 < N ≤ 255.
The two-word command is for colour output and sets the intensity N for the filter defined by M.
N Colour Filter 000 Clear 200 Red 300 Magenta 400 Green 500 Yellow 600 Blue 700 Cyan
The number of times each output command is drawn with a specified filter in place is defined. The second and third words give the values of the 18 bits in the word.
214000 Specifying Primary Filter Hits 11 BBBB GGGG RRRR NNNN 214000 10 CCCC YYYY MMMM 0000 Secondary Filter Hits 214000 01 BBBB GGGG RRRR NNNN Primary and secondary Filter Hits 10 CCCC YYYY MMMM 0000
The single word commands define the number of hits with each filter up to a maximum of 15.
The first command defines the number of hits for the Blue (B), Green (G), Red (R) and Clear (N) filters.
The second command defines the number of hits for the secondary filters Cyan (C), Yellow (Y) and Magenta (M).
The two-word command defines the hits for both primary and secondary filters. For example:
214000 201400 400600
defines 3 green hits and 3 magenta hits.
211777 040000 + N N ≤ 16383
Character spacing is set to N.
212777 040000 + N N ≤ 16383
Line spacing is set to N.
224777 040000 + N N ≤ 16383
Character height is set to N.
It was possible to store and reuse fragments of output by local storage on the FR80 during a run.
202000 + N N ≤ 63 PICTURE DEFINITION
This indicates the start of picture N, which will be stored internally in the FR80.
202377 END OF PICTURE
Defines the end of the current picture definition.
202400 + N N ≤ 63 DRAW PICTURE
Draws picture N.
202600 + N N ≤ 63 DELETE PICTURE DEFINITION
Deletes picture N.