NEC PD17062 User Manual
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PD17062
20.5.3 Defining Display Patterns with an Assembler
With the 17K series assembler, the DCP pseudo instruction can be used to define display patterns easily.
How to use the DCP pseudo instruction is described below.
(1) Instruction format
Symbol field
Mnemonic field
Operand field
Comment field
[Label:]
DCP
expression, ‘display pattern’
[; comment]
(2) Explanation
(a) The expression takes value 0 or 1. The display pattern written in the second operand specifies whether
to use rimming in the display pattern.
0 : No rimming
1 : Rimming
If the expression does not evaluate to 0 or 1, an error is reported.
(b) The display pattern definition consists of 10 characters and can include three different characters, O,
#, and “ “ (blank).
If the display pattern is specified with any other character type or more then 10 characters, an error
is reported. Each of these three character types corresponds to one dot and has the following
meaning:
O : Bright dot
#
: Rimming
“ “ : Blank
When the expression in the first operand evaluates to 0, the display pattern cannot include #.