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- mode4
- O10
- R2 0 638 333
- O11
- R6 3 634 330
- O10
- R10 6 630 327
- O11
- text/30 35 1 0 0
- Bytes can also be used to
- represent instructions. You could
- invent a code in which each of the
- 256 possible combinations of bits
- is a different instruction to the
- computer. For instance, if 34 means
- put a red dot in the middle of the
- screen, and if 176 means move that
- dot to the left... You get the idea,
- that's programming. Of course there
- are more than 256 things you could
- have the computer do. Combinations
- of many bytes, each representing a
- simple instruction, can be used to
- build a complex instruction.
- Programmers don't actually have
- to remember the numbers assigned to
- bytes. Their programming languages
- ~
- text/350 35
- themselves assign English-like
- words to the instructions
- contained in the bytes. Here
- is a sample from a programmer's
- file. This example is actually
- running right now. It's a
- part of What's In That Box:
- ~
- O10
- text/350 154 1 0 0
- begin
- cleardevice;
- assign(outfile,'goto');
- readfile;
- u := readkey;
- menu;
- end; {procedure goto}
- ~
- O12
- text/339 262 1 0 0
- (This pops up the goto screen.)
- ~
- O14
- R354 149 575 247
- mode4
- mode4
- O10
- L327 21 327 268