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Document the .tcount function

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git-svn-id: svn://svn.cc65.org/cc65/trunk@152 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz 2000-07-15 10:42:20 +00:00
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commit 4a0b4e86d4
1 changed files with 36 additions and 11 deletions
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doc/ca65.txt
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@ -377,20 +377,22 @@ Available operators sorted by precedence:
Op Description Precedence
-------------------------------------------------------------------
.CONCAT Builtin function 0
.LEFT Builtin function 0
.MID Builtin function 0
.RIGHT Builtin function 0
.STRING Builtin function 0
* Builtin pseudo variable (r/o) 1
.BLANK Builtin function 1
.CONCAT Builtin function 1
.CONST Builtin function 1
.CPU Builtin pseudo variable (r/o) 1
.DEFINED Builtin function 1
.LEFT Builtin function 1
.MATCH Builtin function 1
.MID Builtin function 1
.TCOUNT Builtin function 1
.XMATCH Builtin function 1
.PARAMCOUNT Builtin pseudo variable (r/o) 1
.REFERENCED Builtin function 1
.RIGHT Builtin function 1
.STRING Builtin function 1
:: Global namespace override 1
+ Unary plus 1
- Unary minus 1
@ -1597,7 +1599,7 @@ Here's a list of all control commands and a description, what they do:
storage should be defined. The second, optional expression must by a
constant byte value that will be used as value of the data. If there
is no fill value given, the linker will use the value defined in the
linker configuration file (default: zero).
linker configuration file (default: zero).
Example:
@ -1700,10 +1702,33 @@ Here's a list of all control commands and a description, what they do:
Example:
; Emulate other assemblers:
.macro section name
.segment .string(name)
.endmacro
; Emulate other assemblers:
.macro section name
.segment .string(name)
.endmacro
.TCOUNT
Builtin function. The function accepts a token list in braces. The
function result is the number of tokens given as argument.
Example:
The ldax macro accepts the '#' token to denote immidiate addressing
(as with the normal 6502 instructions). To translate it into two
separate 8 bit load instructions, the '#' token has to get stripped
from the argument:
.macro ldax arg
.if (.match (.mid (0, 1, arg), #))
; ldax called with immidiate operand
lda #<(.right (.tcount (arg)-1, arg))
ldx #>(.right (.tcount (arg)-1, arg))
.else
...
.endif
.endmacro
.WORD
@ -1976,7 +2001,7 @@ Macros with parameters may also be useful:
.define DEBUG(message) .out message
DEBUG "Assembling include file #3"
Note that, while formal parameters have to be placed in braces, this is
not true for the actual parameters. Beware: Since the assembler cannot
detect the end of one parameter, only the first token is used. If you