[Coco] stupid question about memory

[Arthur Flexser]

Come to think of it, a simpler test that should work would be this,
immediately after power-up:

Step 1: POKE &HFFDF,0

Step 2: See if machine has crashed.

If it crashes, that would indicate 64K, since going into RAM mode will
kill the BASIC ROMs if they haven't been copied to RAM.  On a 32K
machine, the poke should have no effect.

Art

On Thu, Oct 6, 2011 at 10:40 PM, Arthur Flexser <flexser at fiu.edu> wrote:
> That indicates nothing, since a 32K machine would behave exactly the same.
>
> Best method would be to look inside, as someone suggested, or download
> a program that copies the ROMs to RAM.  After running such a program,
> and while in RAM mode (POKE &HFFDF,0), try poking a location in the
> ROM region $8000-DFFF and see if you can change the value contained
> there.  Ex: POKE &H8000,99: PRINT PEEK(&H8000).  If the value can be
> changed, the machine has 64K.
>
> Art
>
> On Thu, Oct 6, 2011 at 10:31 PM, Chad H <chadbh74 at hotmail.com> wrote:
>> My 'Guess' is that it's 64K. Both of my CoCo 2's are 64K and report 24871
>> free MEM at bootup, although they also have ECB 1.1.
>>
>> -----Original Message-----
>> From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
>> Behalf Of Richard Ivey
>> Sent: Wednesday, October 05, 2011 9:01 PM
>> To: CoCoList for Color Computer Enthusiasts
>> Subject: [Coco] stupid question about memory
>>
>> I'm going through some of my spare cocos to put on ebay.  I have a modified
>> (has the nice keyboard) coco1 that still has the 4k badge.. I know it's not
>> 4k as print mem is 24871 and has extended color basic 1.0.
>>
>> How can I tell if this is 32k or 64k.  I don't want to falsely advertise
>> when I sell this thing.
>>
>> Maybe a peek or a poke or a tweet.
>>
>> Thanks.
>>
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>