Subject:
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Re: assembler
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 10 Jul 1998 09:57:52 GMT
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Original-From:
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Bernd Klein <Bernd.Klein@{nospam}pdv-online.de>
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Viewed:
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1200 times
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Hi Richard,
Sorry for my bad english (normaly i speek german).
The 68hc11 has differnt kinds of addressing-modes.
1) LDAA #65 : immediate adress, The
value is stored in accumulator
2) LDAA result : direct Adress
The value from adress RESULT is stored in accumulator (8Bit Adress)
3) LDAA PORTA : extended Adress The value
from adress RESULT is stored in accumulator (16Bit Adress)
4) LDAA X : Index X- adressing The
value from adress stored in X is stored in accumulator
5) LDAA 3,Y : Index Y-adressing Like
(3), but there is an 3-Byte offset (adressoffset !!!)
to 1) The value is stored "immediate" into the accumulator
to 2) only 8Bit Adressingmode (256 Bytes)
to 3) It is possible to adress 64K (16Bit - complete RAM-Memory)
to 4) Adressingmode for your X and Y Register. It is possible to use
an offset Byte (shown at top 5)
> but what's the difference between:
> ldaa #$1000
> and
> ldaa $1000
Like my explanation above.
LDAA #$1000 The value $1000 is stored immediate into
accumulator
LDAA $1000 The value from adress $1000 is stored direct
into accumulator !!!!
I hope that´s all, good luck for programming your 68HC11
Bye Bernd Klein
Richard meester schrieb:
> Hello,
>
> can anyone tel me the function of the # in the AS11 assembler,
>
> i'm new at assembler programming and get sometimes confused about the
> usage of the #
>
> # means a number,
>
> but what's the difference between:
> ldaa #$1000
> and
> ldaa $1000
>
> Thanks,
--
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| Hello, can anyone tel me the function of the # in the AS11 assembler, i'm new at assembler programming and get sometimes confused about the usage of the # # means a number, but what's the difference between: ldaa #$1000 and ldaa $1000 Thanks, (26 years ago, 10-Jul-98, to lugnet.robotics.handyboard)
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