[Coco] 6502 to 6809 translation
John Kent
jekent at optusnet.com.au
Mon Aug 1 10:08:53 EDT 2011
http://www.steeman.dk/CoCoManuals/6502-6809Translator.pdf
On 1/08/2011 11:26 PM, John Kent wrote:
>
>
> On 1/08/2011 10:42 PM, Phill Harvey-Smith wrote:
>>
>> Yeah that would work quite a lot of the code seems to be something like
>>
>> ldy #something
>> loop:
>> lda (indirect),y
>> ;; do something with a here !
>> iny
>> bne loop
>>
>>
>> So I guess that would become
>>
>> ldy (indirect)
>
> ldy indirect ; (absolute addressing no indirect)
> where the address "indirect" holds the address you want to point to.
> .
>> ldb #something
>> loop:
>> lda b,y
>> incb
>> bne loop
>>
>>
>> That would work well I think.
>>
>> Thanks.
>>
>> Phill.
>>
>
--
http://www.johnkent.com.au
http://members.optusnet.com.au/jekent
More information about the Coco
mailing list