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Bill Pierce | 24 May 2013 02:29
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Coco 1 & 2 differences


Hi,
Are there any differences in the VDG chip in the Coco 1 & 2?
I seem to remember someone comparing these before but can't remember where I saw the info. I know there were
differences in the serial port use. Are there any other differences?
I have a Coco 1 (26-3003A) "F" board, 64k, and the reason I'm asking is that I created a NitrOS-9 boot using the
CoHR driver and it won't boot. I can switch the CoHR out to the CoVDG and it boots fine. That's why I was
wondering about the VDG chip.

Thanks

Bill Pierce
My Music from the Tandy/Radio Shack Color Computer 2 & 3
https://sites.google.com/site/dabarnstudio/
Co-Webmaster of The TRS-80 Color Computer Archive
http://www.colorcomputerarchive.com/
Co-Contributor, Co-Editor for CocoPedia
http://www.cocopedia.com/wiki/index.php/Main_Page
E-Mail: ooogalapasooo@...

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Chester A Patterson | 23 May 2013 18:12

OT - Vintage tech 'firsts', including Apple 1, up for auction


While on the subject of discontinued and/or old computers...

Vintage tech 'firsts', including Apple 1, up for auction
http://edition.cnn.com/2013/05/23/tech/innovation/apple-1-up-for-auction/index.html?hpt=hp_c5

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Wayne Campbell | 22 May 2013 23:24
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Help with I-Code

As some of you know, I have been working on a Basic09 I-Code
disassembler/decompiler/unpacker. While I have had to take time away, I
find now that I can spend a little time on it. I have been thinking about
the problem with TYPE statement data in Basic09 I-Code modules. I think I
can get more information by creating a few test modules that contain
various TYPE statements and keep track of the similarities/differences
between like statements in differing procedures. Hopefully that will reveal
more about how to interpret the data in the modules.

I will likely need help with the testing, since I cannot at this time run
my version of MESS to do the testing with. What I would like to do is work
with a couple of people who can do the packing of the modules and dumping
the I-Code contents to a file to send back to me to unravel. I will be
writing the test procedures blind (from memory and without knowing if I
have made a mistake or not), so some debugging may be required. In those
cases, I will need a listing of the source with corrections. Are there any
takers here? Anyone interested in helping out can email me.

Wayne

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Bill Pierce | 22 May 2013 00:12
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64k memory check


Hi guys,
I just aquired a Coco 1 (grey) Cat 278-300A., CCR-81 Cassette Recorder, X-Pad and a few carts and tapes.
The Coco powers up fine.
Extendended Color Basic 1.0
PRINTMEM reports 24871
Since this is an "F" board and the "F" boards were the first Coco 1s actually "meant" to be upgraded to 64k, I
assume it is 64k.
The warrenty seal has been removed and replaced by a Radio Shack Service Center seal, so I would think it had
to be upgraded by Radio Shack or the seal would be broken. What I would like to know, and I know it's been
discussed many times before, is if there is a PEEK/POKE or short routine to test for 64k? I plan to hook it up
to a drive and run OS-9 Level 1 and that will surely fail if it's 32k. But if there's a quick way, that would
save me a lot of trouble

Here a link to some pics of the Coco 1 and accessories I recieved
https://sites.google.com/site/dabarnstudio/temp-pics

Bill Pierce
My Music from the Tandy/Radio Shack Color Computer 2 & 3

https://sites.google.com/site/dabarnstudio/
Co-Webmaster of The TRS-80 Color Computer Archive
http://www.colorcomputerarchive.com/
Co-Contributor, Co-Editor for CocoPedia
http://www.cocopedia.com/wiki/index.php/Main_Page
E-Mail: ooogalapasooo@...

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Luis Fernández | 21 May 2013 14:14
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Two Items on ebay, we have them?

We do not have on any archive, I think
Planetarium
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=151048073320&ssPageName=ADME:B:SS:US:1123#ht_500wt_1192
Battle of Gettysburg
http://www.ebay.com/itm/Vintage-software-for-Tandy-Radio-Shack-Color-Computer-CoCo-Gettysburg/161029419690?_trksid=p2047675.m1850&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D11%26meid%3D7806682226934408933%26pid%3D100011%26prg%3D1005%26rk%3D4%26sd%3D151038002850%26

--------------------------------------------------------------------------------- 
Making  CoCoDskUtil V 1.X.X, Scan magazines and organize maltedmedia
http://cococoding.com/cocodskutil/ Thank Aaron Wolfe
http://www.tandycoco.com Thank Brian Blake and Stephen Fischer
My personal blog: http://www.luis45ccs.blogspot.com, 
Excuse my English, I use google translator, my language is Spanish, I'm Spanish but I live in Venezuela
--------------------------------------------------------------------------------- 		 	   		  

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Matthew | 21 May 2013 04:00
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Extended color basic to Color basic on COCO 2

Okay so my uncle gave me a COCO 2 computer, he had no idea if it worked or 
not, when i turned it on it worked, i noticed there was some commands written 
on the machine, like sound, the strange thing is that when i turned it on then 
it said Extended Color Basic, not sure which version, it also said Copyright 
Microsoft, if it said anything else i do not remember, and when i used the 
sound command it played beeps based on the DURATION and FREQUENCY i specified, 
then a few days later when i turned it on it now says Color Basic 1.2 (C) 1982 
TANDY and sound no longer works.

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Glen VanDenBiggelaar | 20 May 2013 20:08
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Re: Hardware sale- shipping

Roni,
Sent a e-mail on shipping rates (which are insane) let me know and I will send a Paypal invoice if you want it.
Remember these are NTSC machines running on 120 power (standard for USA and Canada) - I am not sure
what Portugal takes for power/ Video, but I seem to always have to remind the Amiga guys because they
just assume its PAL and European standards and then are choked because it won't work properly in their region.
-Glen
-----------------------------------
>Hi mate, 

>How much the postage to Portugal, for the Coco 3? 

>Cheers, 
>Roni 		 	   		  

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Glen VanDenBiggelaar | 20 May 2013 17:58
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Hardware Sale

My hardware sale on friday went so well, that I am spending the day doing the boxing and shipping from it. I
have also decided to do another sale today on the hardware for those that missed it and wanted to get in on
today's (well actually tomorrow's-because of the holiday) mail run. All hardware prices have been
reduced between $5 and $50 and everything is under $60 -INCLUDING shipping to the USA and Canada. This ends
at midnight (MNT) tonight
http://store.amigalounge.com/g43.html
Please- no Trolls LOL 		 	   		  

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Torsten Dittel | 20 May 2013 12:53

Not my offer: Nice (late) Canadian CoCo2 model for sale in Ontario

http://ontario.kijiji.ca/c-buy-and-sell-art-collectibles-Tandy-Colour-
Computer-W0QQAdIdZ481538264

Contains rare to find ROM Pak Dragonfire2

Regards,
Torsten

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Matthew D Stock | 20 May 2013 01:25

Simple Coco bus buffer for HW folks

[ I tried sending this before, but I think from the wrong account. Sorry 
if this is a dup. ]

I put together a little board to help me with my hardware development, 
and I thought that it might help others as well.  It's essentially a 
stripped down version of my ROM/device emulator - just the buffer chips 
and a pin header breaking out all of the needed stuff.  The header is 
compatible with the GPIO header for the Terasic DE1 FPGA dev board, but 
obviously it can be used with anything, both 3.3v and 5v, provided that 
it can supply the board with 3.3v.

Take a look at the video to see a quick demo using the FPGA as a ROM: 
http://www.youtube.com/watch?v=ttf82tPXUko. Overkill, but you get the idea.

When I have a few minutes I'm going to put the board layout and 
schematic up on the web.  I also intend to sell populated board for 
those of you who don't like to do fine pitch SMD soldering.  Haven't 
finalized a price yet, but I believe it will be around $35.  If you're 
interested, send me a note.

I'm still working on the ROM board, but I'm playing around with some 
options to make it cheaper and more flexible.
   -Matt

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S Klammer | 19 May 2013 14:28
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RGB2VGA in FPGA, useful?

Could this be useful in a "v2" of Roy's adapter?

This RGB to VGA adapter was designed upon an Altera FPGA for use with a BBC
Micro (PAL) and has been released as open source.

https://github.com/makestuff/rgb2vga

>From the "ReadMe"...

NATIVE DIGITAL RGB TO VGA CONVERTER

This code accepts a pixel clock, R, G, B, HS and VS from an old computer
and generates a VGA signal suitable for display on a modern monitor. The
main caveat is that monitors to be used with PAL machines must be able to
deal with a 50.000Hz vsync (many do, some do not).

<...>

This will build a .svf file suitable for loading into an Altera EP2C5 FPGA
(e.g http://www.ebay.co.uk/itm/150835820710). Suitable level-shifting is
required to protect the FPGA from any 5V signals. On the VGA side, a series
270R resistor on the R, G & B lines is all that's needed.

Chris McClelland
2013-05-10

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Gmane