[Coco] Cryptic BASIC program

Arthur Flexser flexser at fiu.edu
Fri Sep 25 23:41:49 EDT 2015


I'm pretty sure that listing is taken from a program that appears in the
CoCo 1 service/technical manual.  As you say, it's not a real RAM test
program.

I think everything in the 1600s should be 16000s.

Art

On Fri, Sep 25, 2015 at 11:18 PM, Darren A <mechacoco at gmail.com> wrote:

> On Fri, Sep 25, 2015 at 8:58 PM, Robert Gault wrote:
>
>
> > This may or may not work depending on how the RAM size bits work. This
> > method is not, in my opinion, a good test for functional RAM. Actually
> the
> > test really should be dependent on whether the jumpers on the mother
> board
> > were correctly switched from the 16K position.
> >
>
>
> It is not a good substitute for a real RAM test program. It merely checks
> the jumper setting which Basic uses at initialization time to decide how to
> configure the SAM chip.  I'm not sure if the CoCo will even boot correctly
> when the SAM is configured for the wrong type of RAM chip.
>
> - Darren
>
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