[Coco] Re: Coco Digest, Vol 30, Issue 38

Tue Feb 14 12:59:22 EST 2006

I would be interested in a coco3 and all things Rainbow.

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Today's Topics:

1. Re: TEAC FD55-E speed adjustment (Bob Devries)
2. [Color Computer] eBay: RGS Micro DUAL DOS CARD for RADIO
SHACK COLOR COMPUTER (Neil Morrison)
3. Re: TEAC FD55-E speed adjustment (Robert Gault)
4. [Color Computer] Fw: To be given away - CoCo stuff (Neil Morrison)
5. Re: TEAC FD55-E speed adjustment (Robert Gault)
6. Caller ID Article (Aaron Banerjee)

----------------------------------------------------------------------

Message: 1
Date: Tue, 14 Feb 2006 14:19:40 +1000
From: "Bob Devries" 
Subject: Re: [Coco] TEAC FD55-E speed adjustment
To: "CoCoList for Color Computer Enthusiasts" 
Message-ID: <00ef01c6311d$e0131f40$0701a8c0 at master>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response

Robert,
How does your programme keep its timing correct? If it uses the HS or FS 
interrupt from the PIA, then it will not be accurate on the PAL colour 
computer.

--
Regards, Bob Devries, Dalby, Queensland, Australia

Isaiah 50:4 The sovereign Lord has given me
the capacity to be his spokesman,
so that I know how to help the weary.

website: http://www.home.gil.com.au/~bdevasl
my blog: http://bdevries.invigorated.org/

----- Original Message ----- 
From: "Robert Gault" 
To: "CoCoList for Color Computer Enthusiasts" 
Sent: Tuesday, February 14, 2006 1:42 PM
Subject: Re: [Coco] TEAC FD55-E speed adjustment

>I can supply a program I wrote that graphically displays the drive speed. 
>It is much easier to use than the strobe wheel and give the results in a 
>quantitative value of RPM and % deviation.
>
> Gene Heskett wrote:
>
>> On Monday 13 February 2006 11:41, James Hrubik wrote:
>>
>>>Gene, is it going to make a difference if the flourescent is running
>>>under 50hZ or 60hZ AC? I was under the impression that the frequency
>>>of the AC was the determining factor in the strobe effect of the
>>>light.
>>
>>
>> Obviously it will, but normally the strobe sticker has 2 sets of stripes, 
>> one for 50hz, and one for 60hz. Not being able to see the one Torsten 
>> has, I am of course shooting wildly in the dark at anything that moves & 
>> makes a sound. :-)
>>
>>
>>>On Feb 13, 2006, at 11:29 AM, Gene Heskett wrote:
>>>
>>>>On Monday 13 February 2006 04:40, Torsten Dittel wrote:
>>>>
>>>>>Does anyone know how to adjust the speed of the TEAC FD55-E drives
>>>>>(that's a 1-side 80track 360KB 5.25" drive? There are two pots,
>>>>>one of
>>>>>them on the motor's PCB, I guess it's that one but I need to have
>>>>>this
>>>>>confirmed by someone who knows...
>>>>
>>>>Does it have the strobe pattern on the bottom of the spindle? Thats
>>>>easily watched under a flourescent light, when it stands still
>>>>rather than creeping on direction or the other, you have the right
>>>>speed. Adjust the pot on the motor pcb for effect after noting where
>>>>it is in case its not the right pot.
>>>>
>>>>
>>>>>Thanks!
>>>>>Torsten
>>>>
>>>>--
>>>>Cheers, Gene
>>>>People having trouble with vz bouncing email to me should add the
>>>>word 'online' between the 'verizon', and the dot which bypasses vz's
>>>>stupid bounce rules. I do use spamassassin too. :-)
>>>>Yahoo.com and AOL/TW attorneys please note, additions to the above
>>>>message by Gene Heskett are:
>>>>Copyright 2006 by Maurice Eugene Heskett, all rights reserved.
>>>>
>>>>--
>>>>Coco mailing list
>>>>Coco at maltedmedia.com
>>>>http://five.pairlist.net/mailman/listinfo/coco
>>>
>>>---------------------------------------------------
>>>-----Items below rated "R"; parental discretion advised----
>>>---------------------------------------------------
>>>"I have an excuse : all of my ancestors were teenagers..."
>>> From the sayings of Grampa Jim, Copyright 2003.
>>>Unauthorized use of my stuff may cause senility.
>>
>>
>
> -- 
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco
>
>
> -- 
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>
> 

------------------------------

Message: 2
Date: Mon, 13 Feb 2006 20:40:02 -0800
From: "Neil Morrison" 
Subject: [Coco] [Color Computer] eBay: RGS Micro DUAL DOS CARD for
RADIO SHACK COLOR COMPUTER
To: "Coco on Yahoo" 
Message-ID: <0baa01c63121$68881b70$dbe679d1 at NewBaby>
Content-Type: text/plain; charset=Windows-1252

(item 8766143606 end time Feb-20-06 19:15:38 PST)

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=8766143606

The R.G.S. MICRO 16K DUAL DOS CARD allows your J&M Controller to switch 
between two different DOSes without having to open your controller and 
change the IC's. This is a great addition to the collection of any COCO 
enthusiast.

Not sold by me!

Neil

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------------------------------

Message: 3
Date: Tue, 14 Feb 2006 00:06:19 -0500
From: Robert Gault 
Subject: Re: [Coco] TEAC FD55-E speed adjustment
To: CoCoList for Color Computer Enthusiasts 
Message-ID: <43F1654B.1080209 at worldnet.att.net>
Content-Type: text/plain; charset=us-ascii; format=flowed

The ml program turns off the interrupts and then sends a forced interrupt 
to the drive which is on. This will prevent the drive from timing out and 
no command will be in progress. It then monitors the controller status 
register $FF48 checking for the index bit. Once an index hole is found, it 
counts the number of CPU cycles until the next index hole is seen. The 
cycle count is returned to the main Basic program.

The main program can be adjusted for CPU clock speed of 1 or 2MHz. It can 
also be adjusted for cycles per minute: CM=60*CLOCK*894886.3:'CYCLES/MIN.
That means it should be easy to adjust CM for a PAL Coco which I think 
would use 50 & 889843.8. That assumes a PAL Coco divides the master crystal 
by 32 to get the slow CPU clock speed as does a US Coco. In any case some 
suitable factor can be found.

Bob Devries wrote:
> Robert,
> How does your programme keep its timing correct? If it uses the HS or FS 
> interrupt from the PIA, then it will not be accurate on the PAL colour 
> computer.
> 
> -- 

------------------------------

Message: 4
Date: Mon, 13 Feb 2006 21:08:34 -0800
From: "Neil Morrison" 
Subject: [Coco] [Color Computer] Fw: To be given away - CoCo stuff
To: "Coco Club" , "Coco on Yahoo"
, "TRS80 MC10 Club"

Cc: Joe Noel 
Message-ID: <0bb701c63124$d8a3e080$dbe679d1 at NewBaby>
Content-Type: text/plain; charset=ISO-8859-1

FYI

----- Original Message ----- 
From: "Joe Noel" 
Newsgroups: bit.listserv.coco
Sent: Monday, February 13, 2006 4:39 PM
Subject: To be given away

>I have a whole bunch of CoCo stuff to get rid of. One CM8 monitor, some 
> coco2s and 3s, rainbow magazines as well as some disks. If anyone is 
> interested we can have a better look and give a better idea of what is 
> all included.
> If no one wants them they will be scrapped before too long.
> They are located in Edmonton Alberta Canada

Brought to you by the 6809, the 6803 and their cousins! 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/ColorComputer/

<*> To unsubscribe from this group, send an email to:
ColorComputer-unsubscribe at yahoogroups.com

<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/

------------------------------

Message: 5
Date: Tue, 14 Feb 2006 00:14:10 -0500
From: Robert Gault 
Subject: Re: [Coco] TEAC FD55-E speed adjustment
To: CoCoList for Color Computer Enthusiasts 
Message-ID: <43F16722.6000704 at worldnet.att.net>
Content-Type: text/plain; charset=us-ascii; format=flowed

Oops, the PAL formula should be CM=60*CLOCK*889843.8. The 60 will not 
change as that is the seconds to minutes conversion.

Robert Gault wrote:
> The ml program turns off the interrupts and then sends a forced 
> interrupt to the drive which is on. This will prevent the drive from 
> timing out and no command will be in progress. It then monitors the 
> controller status register $FF48 checking for the index bit. Once an 
> index hole is found, it counts the number of CPU cycles until the next 
> index hole is seen. The cycle count is returned to the main Basic program.
> 
> The main program can be adjusted for CPU clock speed of 1 or 2MHz. It 
> can also be adjusted for cycles per minute: 
> CM=60*CLOCK*894886.3:'CYCLES/MIN.
> That means it should be easy to adjust CM for a PAL Coco which I think 
> would use 50 & 889843.8. That assumes a PAL Coco divides the master 
> crystal by 32 to get the slow CPU clock speed as does a US Coco. In any 
> case some suitable factor can be found.
> 
> Bob Devries wrote:
> 
>> Robert,
>> How does your programme keep its timing correct? If it uses the HS or 
>> FS interrupt from the PIA, then it will not be accurate on the PAL 
>> colour computer.
>>
>> -- 
> 
> 

------------------------------

Message: 6
Date: Tue, 14 Feb 2006 07:55:59 -0500 (EST)
From: Aaron Banerjee 
Subject: [Coco] Caller ID Article
To: coco at maltedmedia.com
Message-ID: 

Content-Type: TEXT/PLAIN; charset=US-ASCII

All,
Before it becomes "lost", I thought I'd let you know I found the old
articleon the format of caller ID, and in the process of looking for it,
found one that can accomodate for the name.

The original article, "Take Back Control of your Telephone" appears in
the February, 1994 issue of "Electronics Now". A follow-up, including the
format for how a name is relayed appears in the July 1994 issue of
"Electronics Now".
- Aaron

------------------------------

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End of Coco Digest, Vol 30, Issue 38
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