Table 3-13, which follows, describes additional symbols used.
Table 3-13. Additional Symbols
Assignment of a value is indicated by the symbol ←, for example:
dst ← dst + src
indicates the source data is added to the destination data and the result is stored in the destination location.
The notation addr(n) is used to refer to bit 'n' of a given location. The following example refers to bit 7 of
the destination operand.
dst (7)
Some instructions operate with several addressing modes. This situation is indicated by an op code number
written like x[ ]. The brackets are filled by a nibble indicating the addressing mode in use. For example,
ADD 0[ ] indicates that the ADD instruction works identically for more than one addressing mode.
Symbol
Definition
dst
Destination Operand
src
Source Operand
@
Indirect Address Prefix
SP
Stack Pointer
PC
Program Counter
FLAGS
Flag Register (FCH)
RP
Register Pointer (FDH)
IMR
Interrupt Mask Register (FBH)
#
Immediate Operand Prefix
%
Hexadecimal Number Prefix
H
Hexadecimal Number Suffix
B
Binary Number Suffix
OPC
op code
.75
P
Â
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