RJRTTY | 1 Nov 02:19 2005
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Re: advice needed


In a message dated 10/31/05 12:34:31 P.M. Eastern Standard Time,  
robert.gault@... writes:

I can't  remember any software using the monitor sensing line, but that 
doesn't  mean much. The only problem might be that the PIA is configured 
for input  on that line. You would need to change it to output. That 
means you will  need to reconfigure any time the RESET button is pressed 
for the PIAs will  be reset based on the ROM.

Lets say that you burn a new ROM which makes  $FF22 bit 3 an output. Now 
any software that wrote to $FF22 will probably  have to be changed. None 
of the software using $FF22 expects bit 3 to be  output so it may not 
keep bit 3 high. There is a fair chance that any  software adjusting the 
video PMODE settings, or single bit sound could  turn off your monitor.

OK....I tried the break key and reset and they both turn that line into an  
input.
This turns the monitor back on.    This happens because  there is a pull up
resistor on the PIA line that pulls it up when the PIA  signal becomes an 
input
 or "hi z" eventually causing the I2C data line to go high.
 My converter software uses that signal to drive the I2C  data line that
is high by default.  By definition, all I2C devices release (go high  Z) the 
data line when
they don't need it so that other devices can be on the same  line.  This is
called "wire anding".   This also means
that line has a pull up resistor to hold it high until another device  needs 
it.
  The I2C software I have written for the unit releases
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RJRTTY | 1 Nov 02:19 2005
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Re: Re: advice needed


In a message dated 10/31/05 1:27:45 P.M. Eastern Standard Time,  
Torsten@... writes:

My  opinion too. Just add a jumper to allow a break of the  corresponding
"Monitor Power Down" VGA  line.

Actually the monitor powers down automatically when you
remove the horizontal and vertical interrupt sync signals.
But a jumper is still doable.

Roy

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RJRTTY | 1 Nov 02:19 2005
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Re: advice needed


In a message dated 10/31/05 12:38:25 P.M. Eastern Standard Time,  
mark@... writes:

I  would add a jumper to allow this feature or not.

This way the end user  has an option........

I just may do that on the next version.    I have ten boards  counting
the one I sent you to go through first.

thanks
Roy

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RJRTTY | 1 Nov 02:19 2005
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Re: advice needed


In a message dated 10/31/05 4:23:17 P.M. Eastern Standard Time,  
kevdig@... writes:

>If this is all firmware it would not have to delay it would  it?

The coco uses that line as the I2C data line so the controller
needs a delay to distinguish between variable data or a power  down
signal represented by a constant pull down.  

 

 

>Will it be possible for users to mod it so it can be powered from the  tre?

Nope.  I tried like HE** to do that but couldn't figure out a way to  make it
happen.

 
Roy

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RJRTTY | 1 Nov 02:19 2005
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Re: advice needed


In a message dated 10/31/05 3:17:52 P.M. Eastern Standard Time,  
idezilla@... writes:

Sounds  like a good idea, software controlling the monitor.

Paul -  idezilla

Wasn't my idea.   Thank Kevin for that one.

Roy

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Steve Ostrom | 1 Nov 04:39 2005
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Re: New! Cassette to floppies


Glen VanDenBiggelaar wrote:

>
> Hi everyone,
> I got a shoebox full of cassette games over the weekend, and had fun 
> last night going through them. My question is : does anybody know of a 
> quick way to transfer Cassette to floppy? (Batch file or basic 
> program?) I will have time tonight to go through all the basic books.
> -Glen
>
>
>
I use SBU (Super Backup Utility) sold by Computize.  Works great.

-- Steve --

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Glen VanDenBiggelaar | 1 Nov 04:41 2005
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Re: New! Cassette to floppies


Thanks guys, but maybe I should ask for a basic listing that I could type 
in, like the way they had in the Rainbow. Right now I am going to attemp 
just to "Load" them to the CoCo and then Save them back to disk. Slow and 
teadious, 1 program at a time.
-Glen
>
>
>Glen VanDenBiggelaar wrote:
>
>>
>>Hi everyone,
>>I got a shoebox full of cassette games over the weekend, and had fun last 
>>night going through them. My question is : does anybody know of a quick 
>>way to transfer Cassette to floppy? (Batch file or basic program?) I will 
>>have time tonight to go through all the basic books.
>>-Glen
>>
>>
>>
>I use SBU (Super Backup Utility) sold by Computize.  Works great.
>
>-- Steve --
>
>
>
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Bob Devries | 1 Nov 04:55 2005
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Re: New! Cassette to floppies

Glen, LOAD-ing them in and SAVE-ing them to disk will be fine for those 
programmes that are in BASIC, but what about the machine code ones? And 
then, there's the auto-loading ones, too. Quite a challenge.

There's some peeks that will tell you the START, END and EXEC address of a 
newly LOADM'd file, but I can't remember what they are right now.... anyone?
--
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: "Glen VanDenBiggelaar" <glenvdb@...>
To: <coco@...>
Sent: Tuesday, November 01, 2005 1:41 PM
Subject: Re: [Coco] New! Cassette to floppies

>
> Thanks guys, but maybe I should ask for a basic listing that I could type 
> in, like the way they had in the Rainbow. Right now I am going to attemp 
> just to "Load" them to the CoCo and then Save them back to disk. Slow and 
> teadious, 1 program at a time.
> -Glen
>>
>>
(Continue reading)

Bob Devries | 1 Nov 06:03 2005
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patch DISK BASIC for 40 tracks

Is there a quick and dirty patch (preferably in BASIC) that will change a 
default 35 track DISK BASIC to 40 tracks just for the purpose of backing up 
disks which are 40 tracks?
--
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/

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Kevin Diggs | 1 Nov 08:49 2005

Re: advice needed

RJRTTY@... wrote:
>  
> In a message dated 10/31/05 12:38:25 P.M. Eastern Standard Time,  
> mark@... writes:
> 
> 
> I  would add a jumper to allow this feature or not.
> 
> This way the end user  has an option........
> 
> 
> 
> 
> I just may do that on the next version.    I have ten boards  counting
> the one I sent you to go through first.
>  
> thanks
> Roy
>  
> 
	Do you have to change the hardware depending on whether you use an I2C 
command or just hold the line low? If you use a command then the jumper 
is not necessary. You just don't issue the command.

					kevin

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Gmane