[Coco] OS9 HEX to DECIMAL conversion.

[Wayne Campbell]

As the first response to your email says the key word is PARAM, not
PARAMETER. Also, if you're using nitros9 and shell+, the parameters will be
passed as strings. You will have to use string parameters to receive the
numbers and then convert those strings to actual numbers. Also again,
DIMing parameters or variables requires the use of type identifiers. These
are Atomic types, unless you have defined a complex type. Atomic types are:

REAL
INTEGER
BOOLEAN
BYTE
STRING
USER DEFINED (COMPLEX TYPE)

STRING without a length modifier defaults to 32 characters. Use
STRING[size] to set a length from 1 to 32767 (max length).


On Sun, May 20, 2018, 2:51 PM <coco at jechar.ca> wrote:

> Thanks for the Info.
>
> For my problem with HEX calculations I have found a solution
> Involving breaking the number into 2 sets of three Hex digits and using
> FLOAT and FIX to convert to REAL for the Math and then back to Integer
> to PRINT USING H3.
>
> I an ready to go on to the next step where I want to pass
> parameters from the command line to my program, so not having written
> basic09 code in 15 years I looked for a sample program from  the manual.
>
> The program I found I have listed below.
>
> PROCEDURE add
> PARAMETER a,b
> PRINT a+b
> END
>
> This is exactly as I wrote it as I used list add>/p
> to send it to a file on my PC and then cut and pasted it into
> this email.
>
> But something is wrong as I get these errors.
>
> add
> PARAMETER a,b
>            ^
> ERROR #027
> ERROR #051
> Ready
> B:
>
>
> Help Please!
>
> On 2018-05-19 20:39, L. Curtis Boyle wrote:
> > Discord is an app (available for multiple platforms, or through a web
> > browser), which you can get here:
> > https://discordapp.com
> >
> > Then, find the server “TRS-80 CoCo TALK”.
> >
> > L. Curtis Boyle
> > curtisboyle at sasktel.net
> >
> >> On May 19, 2018, at 3:30 PM, coco at jechar.ca wrote:
> >>
> >> Thanks for the Info it is giving me some ideas about what I may have
> >> to do to deal with these calculations.
> >>
> >> What URL is "Discord" at ?
> >>
> >> On 2018-05-16 14:41, L. Curtis Boyle wrote:
> >> Your error is due to pushing beyond the signed 16 bit limits of the
> >> hex routines in BASIC09. It does work fine within 16 bit signed
> >> values
> >> (I put some screenshots of test source code, and a sample run, in
> >> the
> >> BASIC09 section on Discord).
> >> On May 16, 2018, at 12:19 PM, James Jones <jejones3141 at gmail.com>
> >> wrote:
> >> Tried it out. VAL("$61A80") gives an error 67, "illegal argument".
> >> VAL("A80") prints as 2688., so VAL() returns a REAL, which I guess
> >> it has
> >> to for consistency with other BASICs. Hex PRINT USING output claims
> >> to be
> >> fine with printing a REAL, but perhaps the VAL() code for hex
> >> doesn't
> >> handle values that won't fit in an INTEGER. (What's 61A80? 400000 in
> >> hex.)
>
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