[Coco] replicating bitwise operators in BASIC

[Brett Gordon]

Lol...thats a beautifully insane BASIC expression, Dave. !

On Sep 9, 2016 2:37 PM, "Dave Philipsen" <dave at davebiz.com> wrote:
>
> Well, ok, it doesn't have a specific operator called 'NAND'.  It has NOT
and AND.  Therefore A NAND B is:  NOT (A AND B).
>
> Try this on your CoCo to computer XOR (it uses only NOT and AND, which is
NAND):
>
> 10 A = 0: B = 0: GOSUB 100
> 20 A = 1: B = 0: GOSUB 100
> 30 A = 0: B = 1: GOSUB 100
> 40 A = 1: B = 1: GOSUB 100
> 90 STOP
> 100 Q = NOT ( NOT ( NOT ( A AND B ) AND A ) AND NOT ( NOT ( A AND B ) AND
B ) )
> 110 PRINT "A = ";A;" B = ";B;" Q = ";Q
> 120 RETURN
>
> This is not the shortest way to perform an XOR with the CoCo but it does
demonstrate that an XOR can be performed with just NOT and AND (NAND).
>
>
> Dave
>
>
>
> On 9/9/2016 1:09 PM, Barry Nelson wrote:
>>
>> Well you could, if Extended Color Basic had a NAND operator. To my
knowledge
>> it does not.
>>
>>
>>>
>>>         Dave Philipsen dave at davebiz.com
>>
>> <mailto:coco%40maltedmedia.com
?Subject=Re%3A%20%5BCoco%5D%20replicating%20bi
>> twise%20operators%20in%20BASIC&In-Reply-To=%3C57D2EF0E.8080101%
40davebiz.com
>> %3E>
>> Fri Sep 9 13:19:10 EDT 2016
>>
>>
>>>
>>>          Well, actually NAND _is_ NOT and AND.  And you can actually do
it
>>
>> all
>>>
>>>          with just NAND.
>>
>>
>>
>
>
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