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ST20C4 Datasheet(PDF) 128 Page - STMicroelectronics

No. de pieza ST20C4
Descripción Electrónicos  Instruction Set Reference Manual
PDF  212 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST20C4 Datasheet(HTML) 128 Page - STMicroelectronics

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move2dall
®
128/212
move2dall
2D block copy
Code: 25 FC
Description: Copy a 2D block of memory to another, non-overlapping, area using
parameters set up by
move2dinit. The copy is performed using the minimum number
of word reads and writes. Areg is the number of bytes in each row, Breg is the
address of the destination, and Creg is the address of the source.
Definition:
if (
source and destination overlap)
Undefined effect
else for y = 0 .. (count
− 1)
{
for x = 0 .. (Aregunsigned − 1)
byte
′[Breg + (y × dstStride) + x] ← byte[Creg + (y × srcStride) + x]
}
Areg
′← undefined
Breg
′← undefined
Creg
′← undefined
where
count
= Move2dBlockLength
dstStride
= Move2dDestStride
srcStride
= Move2dSourceStride
Error signals: none
Comments:
Secondar y instruction.
Instruction is interruptible.
See also:
move2dinit move2d nonzero move2dzero1



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