p8x32a Parallax, Inc., p8x32a Datasheet - Page 20

• Manufacturer Part Number: p8x32a
• Description: 8-cog Multiprocessor Microcontroller
• Manufacturer: Parallax, Inc.

Propeller™ P8X32A Datasheet
6.3.1.
Copyright © Parallax Inc.
_CLKFREQ
_CLKMODE
_XINFREQ
_FREE
_STACK
TRUE
FALSE
POSX
NEGX
PI
RCFAST
RCSLOW
XINPUT
XTAL1
XTAL2
XTAL3
PLL1X
PLL2X
PLL4X
PLL8X
PLL16X
1
STRSIZE (StringAddress)
TRUNC (FloatConstant)
VAR
VCFG
VSCL
WAITCNT (Value)
WAITPEQ (State, Mask, Port)
WAITPNE (State, Mask, Port)
WAITVID (Colors, Pixels)
WORD Symbol
〈
WORD [BaseAddress]
Symbol
WORDFILL (StartAddress, Value, Count)
WORDMOVE (DestAddress, SrcAddress, Count)
“Settable” constants are defined in Top Object File’s CON block. See Valid Clock Modes for _CLKMODE. Other settable constants use whole numbers.
Symbol
Size Symbol
Constant
.
WORD
〉
Constants
WORD Data
〈
〈
[Offset]
[Count]
〈
1
[Count]
〈
〈
[Offset]
〉
[Count]
〉
Settable in Top Object File to specify System Clock frequency.
Settable in Top Object File to specify application’s clock mode.
Settable in Top Object File to specify external crystal frequency.
Settable in Top Object File to specify application’s free space.
Settable in Top Object File to specify application’s stack space.
Logical true:
Logical false:
Max. positive integer:
Max. negative integer:
Floating-point PI:
Internal fast oscillator:
Internal slow oscillator:
External clock/oscillator:
External low-speed crystal:
External medium-speed crystal:
External high-speed crystal:
External frequency times 1:
External frequency times 2:
External frequency times 4:
External frequency times 8:
External frequency times 16:
〉 〈((
Spin Command
,
〉
〉
┆
Size
))
Symbol
〈
[Count]
Constants (pre-defined)
〉〉
…
-2,147,483,648
2,147,483,647
Page 20 of 36
≈ 3.141593
$00000001
$00000002
$00000004
$00000008
$00000010
$00000020
$00000040
$00000080
$00000100
$00000200
$00000400
Returns
Value
-1
0
Description
Get size, in bytes, of zero-terminate string.
Remove fractional portion from floating-point constant at compile-time, in
any block.
Declare symbolic global variables.
Video Configuration register.
Video Scale register.
Pause cog’s execution temporarily.
Pause cog’s execution until I/O pin(s) match designated state(s).
Pause cog’s execution until I/O pin(s) do not match designated state(s).
Pause cog’s execution until its Video Generator is available for pixel data.
Declare word-sized symbol in VAR block.
Declare word-aligned and/or word-sized data in DAT block.
Read/write word of main memory.
Read/write word-sized component of long-sized variable.
Fill words of main memory with a value.
Copy words from one region to another in main memory.
($FFFFFFFF)
($00000000)
($7FFFFFFF)
($80000000)
($40490FDB)
(%00000000001)
(%00000000010)
(%00000000100)
(%00000001000)
(%00000010000)
(%00000100000)
(%00001000000)
(%00010000000)
(%00100000000)
(%01000000000)
(%10000000000)
Description
Rev 1.0 11/14/2007
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