[Coco] Coco2 on eBay without Extended Color Basic ?

[Little John]

I also notice this one is 64K already (as was the one I bought back in 
85/86). It may, therefore have either the memory board or the two 64Kx4 - 
I've seen them equipped both ways (in fact, have several of this model, some 
have the 64Kx4 chips, some have the memory board w/8 64Kx1's)

You should also note that it is a 26-3127B - this means it has the 74LS785 
256 cycle refresh SAM chip (this is a given... the '785 is required to 
refresh 64kX4 DRAM). It will also have the 6847T1 VDG which means it is 
capable of TRUE LOWERCASE on the VDG screen (see the POKES that recently 
appeared on this list).

JohnT

----- Original Message ----- 
From: "Little John" <sales at gimechip.com>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Friday, October 29, 2010 3:26 AM
Subject: Re: [Coco] Coco2 on eBay without Extended Color Basic ?


> got that mixed up - it should read TWO 64kx4 RAM
> ----- Original Message ----- 
> From: "Little John" <sales at gimechip.com>
> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> Sent: Friday, October 29, 2010 3:25 AM
> Subject: Re: [Coco] Coco2 on eBay without Extended Color Basic ?
>
>
>> Fedor,
>> I purchased a CoCo 2 when they were being closed out locally around 1985 
>> or 1986. It did NOT have Extended BASIC. I ordered an Extended BASIC ROM 
>> for it from CRC (DISTO's Distributor) and upgraded it myself. This 
>> particular CoCo 2 is very likely the single ROM version - it came with an 
>> 8K ROM w/Color BASIC - the upgrade ROM was a 16K ROM containing both 
>> Color BASIC + Extended BASIC. There will be jumpers onboard - they must 
>> be jumpered to the 128K position - this does NOT refer to RAM - it refers 
>> to the ROM The Color BASIC ROM included will be an 8K 24-pin - the socket 
>> is actually 28-Pin and thus the need to set the jumpers to the 128Kbit 
>> position to take a 27128 compatible ROM w/ext+color BASIC. You will also 
>> notice inside this machine that it has four RAM sockets - it takes 64Kx4 
>> DRAM chips (instead of the older 64Kx1) - you will also notice a set of 
>> memory connectors that allow the machine to be upgraded to 64K with a 
>> board much like the CoCo 3's 512K RAM board. Tandy did this to allow them 
>> to upgrade with either four 64Kx4 RAMS or an RAM upgrade board with eight 
>> 64Kx1 RAMS - this allowed them to use whatever was cheapest at any given 
>> time.
>> Hope this helps - JohnT
>> ----- Original Message ----- 
>> From: "Fedor Steeman" <petrander at gmail.com>
>> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
>> Sent: Friday, October 29, 2010 3:02 AM
>> Subject: [Coco] Coco2 on eBay without Extended Color Basic ?
>>
>>
>>> Hi all,
>>>
>>> I just noticed this eBay auction on my side of the Atlantic, starting 
>>> (for
>>> once!) at a reasonable price level (except perhaps for the shipping). It 
>>> is
>>> a late model CoCo2, very close to the CoCo3 style, but there is 
>>> something
>>> odd about it:
>>>
>>> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=400167384199
>>>
>>> Looking at the startup screen, I can see that it only has Color Basic, 
>>> not
>>> Extended! But weren't all these CoCo2 models equipped with Extended? 
>>> Could
>>> someone have swapped the ROMs or is it perhaps defect? I may have some 
>>> spare
>>> ROM for it, if I would go for it.
>>>
>>> Cheers,
>>> Fedor
>>>
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>>
>>
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