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Update User Manual.md

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David Schmenk 2014-05-22 20:45:17 -07:00
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Docs/Tutorials/PLASMA/User Manual.md
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@ -165,7 +165,7 @@ Words can represent many things in PLASMA, including addresses. PLASMA uses a 16
#### Arrays #### Arrays
Arrays are the most useful data structure in PLASMA. Using an index into a list of values is indispensible. PLASMA has a flexible array operator. Arrays can be defined in many ways, usually as: Arrays are the most useful data structure in PLASMA. Using an index into a list of values is indispensible. PLASMA has a flexible array operator. Arrays can be defined in many ways, usually as:
[`export`] <`byte`, `word`> [`label`] [= < number, character, string, address, ... >] [`export`] <`byte`, `word`> [label] [= < number, character, string, address, ... >]
For example: For example:
``` ```
@ -232,9 +232,10 @@ Notice how xscan goes to 39 instead of 19 in the byte accessed version.
#### Offsets (Structure Elements) #### Offsets (Structure Elements)
Structures are another fundamental construct when accessing in-common data. Using fixed element offsets from a given address means you only have to pass one address around to access the entire record. Offsets are specified with a constant expression following the type override specifier. Structures are another fundamental construct when accessing in-common data. Using fixed element offsets from a given address means you only have to pass one address around to access the entire record. Offsets are specified with a constant expression following the type override specifier.
``` ```
predef puti ; print an integer
byte myrec[] byte myrec[]
word = 2 word = 2
byte name[32] = "PLASMA" byte = "PLASMA"
puti(myrec:0) ; ID = 2 puti(myrec:0) ; ID = 2
puti(myrec.2) ; Name length = 6 (Pascal string puts length byte first) puti(myrec.2) ; Name length = 6 (Pascal string puts length byte first)