[Coco] Coco 1 & 2 differences

Fri May 24 08:39:20 EDT 2013

try formatting them on pc as 720k first. whenever i get sector errors, coco format doesn't fix them. but after formatting on pc the problem disappears.

i'll be sending the cohr later.

Sent from my iPhone

On 2013-05-23, at 10:06 PM, Bill Pierce <ooogalapasooo at aol.com> wrote:

> 
> Luis, If you don't mind, I would like both the disk and the source. Just send them in a private email.
> 
> I have a 3x 3.5 drives. It's the disks themselves that are getting unusable. the drives are doing ok. All 3 drives are dsdd 720k so using the HD disks is unreliable. The 720k drives (according to others) don't write a strong enough signal for the 1.4mg HD disks to be reliable. I know I had a lot of problems with this before. I do have a couple of the 1.4mg drives laying around but neither seem to work with the coco.
> 
> 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 at aol.com
> 
> 
> 
> 
> -----Original Message-----
> From: Luis Antoniosi (CoCoDemus) <retrocanada76 at gmail.com>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Thu, May 23, 2013 9:51 pm
> Subject: Re: [Coco] Coco 1 & 2 differences
> 
> 
> Do you need the asm  files or a disk image ?
> 
> Look this:
> 
> pic.twitter.com/4ZmaG0v5Ql <http://t.co/4ZmaG0v5Ql>
> 
> I just installed a 1.44 3 1/2 on my FD-500 and works like a charm, way more
> reliable than those old teac drives and i can use up to 720k on os-9.
> 
> You just need to cover the HD hole on HD floppies or just use DSDD 3 1/2.
> It works and the data just stay there for a long time no matter what other
> people may say, it just works and worked for me with other platforms too
> like the MSX.
> 
> What I noticed indeed is better to format them on a PC first with a
> "format a: /t:80 /n:9" and after format them on the coco.
> 
> 
> 
> 
> On Thu, May 23, 2013 at 9:01 PM, Bill Pierce <ooogalapasooo at aol.com> wrote:
> 
>> 
>> Luis, I would love a copy of your "patched" CoHR. Also the codes to use
>> the new ones you patched in.
>> I ran a Coco  2 for many years before I could afford a Coco 3. I had to
>> rob a chip from my 2 to fix my 3 after about a year of owning the 3 so that
>> ended my Coco 2 days. I just aquired this Coco 1 and I know there's a few
>> differences, but don't know how much difference in hardware calls. It has
>> ECB 1.0 and I'd love to know if the later versions will work. If so, I want
>> to upgrade the CB & ECB chips. I also need to get HDBDOS burned for a
>> controller so it will boot into HDBDOS for DW. I have several extra disk
>> controllers. I need to do this to my Coco 3 as well.
>> Right now my Coco 1 is set up with only a serial to DB9 going to the PC
>> and a cassette cable going to the PC's headphone jack to load HDBDOS. It's
>> reall a pain to CLOADM"HDBDOS" and have to run DosBox on my PC for
>> "Casout.exe" just to boot up. My Coco 3 boots HDBDOS from a real floppy and
>> sometimes I may have to try 4 or 5 times before it reads the floppy. The
>> disks are becoming unreliable. A rom would eliminate this. No drives, just
>> a controller pak with the HDBDOS rom.
>> I currently run on of my Cocos on DW with VCC w/becker port running in
>> another instance of DW. As soon as I get another USB2DB9 converter, I'll be
>> running all 3. And soon, I hope to be adding a 2nd Coco 3.
>> 4 Cocos all connected to DW.... Cocoing couldn't be more fun
>> 
>> 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 at aol.com
>> 
>> 
>> 
>> 
>> -----Original Message-----
>> From: Luis Antoniosi (CoCoDemus) <retrocanada76 at gmail.com>
>> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
>> Sent: Thu, May 23, 2013 8:35 pm
>> Subject: Re: [Coco] Coco 1 & 2 differences
>> 
>> 
>> speaking of CoHR i made a patch to it. So now it understand OS-9 cursor
>> codes intead of its very own esc codes. It runs fast because it understands
>> the cursor on/off codes too. In fact i implemented all os-9 codes.
>> 
>> Now i can run minted on it :) too bad not enough memory is left to run
>> dynacalc :(
>> 
>> seems most of the people are coco3 and nobody cares for the coco1&2 :'(
>> 
>> 
>> 
>> On Thu, May 23, 2013 at 8:29 PM, Bill Pierce <ooogalapasooo at aol.com>
>> wrote:
>> 
>>> 
>>> 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 at aol.com
>>> 
>>> 
>>> --
>>> Coco mailing list
>>> Coco at maltedmedia.com
>>> http://five.pairlist.net/mailman/listinfo/coco
>> 
>> 
>> 
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