[Coco] 64K Memory Test Program

[Boisy Pitre]

Art,

I’ve had the board on the bench for a day and I’ve looked it up and down. Nothing that even resembles a relay.

On another note, I took apart the keyboard and cleaned it good then carefully put it back together. Man, I forgot how finicky those chiclet keyboards were. Some keys didn’t work right away and took numerous presses before one could be emitted (some are still that way). Are there tips on what to do with these keyboards to make them more responsive? Perhaps adjusting those gold colored clips somehow?

Boisy Pitre
coco at toughmac.com



On Apr 15, 2015, at 4:08 PM, Arthur Flexser <flexser at fiu.edu> wrote:

> My first CoCo was an E-board, and I couldn't hear any sound from the
> cassette relay either, though cassette functions worked fine.  Then again,
> my hearing isn't the most acute in the world.  Did you try putting your ear
> against the case as you give the MOTOR ON/OFF commands?  (Maybe try
> something like 10 FOR I=1 TO 20:NEXT:MOTORON //  20 FOR I=1 TO
> 20:NEXT:MOTOROFF // 30 GO TO 10) to give you time to get your ear down on
> the case and avoid any confusion between the sound of hitting the enter key
> at the end of the command and the cassette relay.
> 
> Art
> 
> On Wed, Apr 15, 2015 at 4:50 PM, Boisy Pitre <coco at toughmac.com> wrote:
> 
>> Thanks Daniel. Did the slowest check and all 64K checks out good.
>> 
>> One thing that is puzzling… this is an E board CoCo 1. I cannot for the
>> life of me find the cassette relay on the board. No clicking sound is made
>> when togging the relay with MOTORON or MOTOROFF.
>> 
>> Boisy Pitre
>> coco at toughmac.com
>> 
>> 
>> 
>> On Apr 15, 2015, at 2:23 PM, Daniel Campos <daniel.campus at gmail.com>
>> wrote:
>> 
>>> "The CoCo Checker" it's a good one that checks up to 64Kb and also
>>> recognizes if the machine has only 16Kb or 32Kb.
>>> 
>>> 
>> http://www.colorcomputerarchive.com/coco/Disks/Utilities/Coco%20Checker,%20The%20(Spectrum%20Projects).zip
>>> 
>>> Daniel
>>> 
>>> 2015-04-15 16:04 GMT-03:00 Boisy G. Pitre <coco at toughmac.com>:
>>> 
>>>> Still on the topic of the CoCo 1 I just fixed…. does anyone have a
>> pointer
>>>> to a good 64K RAM test program for the CoCo that does good coverage?
>>>> 
>>>> 
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