[Coco] Coco 2 with Color BASIC 1.3

[Kip Koon]

Ben,
I just found the exact same model number Coco 2 - 26-3134B in storage, so I
opened it up to see what was in it.  
Mine has an eprom with Extended Color Basic 1.1 installed.  The four jumpers
are soldered in the 128K position.  
As far as I can tell, changing the four soldered jumpers from 64K to 128K
that are at the end of the Color Basic 1.3 rom socket and replacing the
Color Basic 1.3 rom with a 27c128 eprom with Extended Color Basic 1.1 rom
image burned in it should be all you need to get Extended Color Basic 1.1
running on your Korean Coco 2 computer.
My Korean Coco 2 also has just two memory chips in it and when I issue the
Basic command "?MEM", I get 24871 bytes free.  When I issue the "PCLEAR1"
Basic command, and then the "?MEM" command again, it displays 29479 bytes
free.  
So I would say if you get the same results, you can be pretty sure you have
64KBs of ram memory in your Korean Coco 2.  Mine has the two white expansion
single row sockets for a daughter board also, but no expansion board is
installed.
If you need an eprom burnt for your Coco 2, I'd be happy to help you with
that.  Now that I have found a Korean Coco 2 in my storage, I can actually
test the eprom before I ship it.  Send me a private email and let me know
the details.
Kip

-----Original Message-----
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
Behalf Of Ben
Sent: Friday, April 26, 2013 8:31 PM
To: coco at maltedmedia.com
Subject: Re: [Coco] Coco 2 with Color BASIC 1.3

Ben <ben_jimenez at ...> writes:


> 
> Hi,
> 
> I just got my Coco 2 connected to my tv, it boots up to COLOR BASIC 
> 1.3
> (C) 1982 TANDY
> 
> My first question is, how much memory does it have? the label does not
state 
> this. 
> 
> I tried pmode, and pcls, and screen commands and they don't seem to 
> work I
get 
> a SN error.
> 
> Just some questions. thanks.
> 
> Ben
> 
> --
> Coco mailing list
> Coco at ...
> http://five.pairlist.net/mailman/listinfo/coco
> 
> 

Looked up the model number on this coco 2 and found this

26-3134B

This is the last Korean 16K Color BASIC model. It uses the #20261058 circuit
board, which is similar to the #20261044 board. It uses two 4416 RAM chips
and a 24-pin Color BASIC 1.3 ROM in a 28-pin socket as well. However, in
addition to the 4416/4464 sockets and special daughterboard connectors,
there are pads on the board allowing direct factory installation of eight
4164 chips. This is also the board which contains the newer 6847T1 VDG chip
(which is not pin-compatible with the earlier 6847).

so it can be updated to extended basic and 64k memory? is this stuff still
out there? if so where could one find this? 





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