[Coco] Detecting carts

[camillus Blockx]

In that case you maybe can hook into the cart detection routine in DOS or
OS9. The cart detection is an interrupt handler so you can change the code,
when the interrupt occurs send some command to midi device and wait for
answer that suppose to come back from midi. If the answer is not  there in
a curtain time, then error into no card message, and jump into loop. You
have to remove the cartridge before you can do anything else anyway,
jumping back to dos would probably trigger the cart
detection interrupt again.

cba


On Wed, Jul 4, 2012 at 11:45 PM, Bill Pierce <ooogalapasooo at aol.com> wrote:

>
> Eprom does no good in OS-9. And Midi carts have no rom anyway. They are
> just ports. All software, RSDOS & OS-9 for midi is done on Coco side. I
> know there is a ready state of some sort, and was wondering if that could
> be checked as midi has an input & output. I was hoping someone from
> Gleneside would know as it was built by someone in the Gleneside club. I
> was really just wondering if there was some sort of "cart detect" signal
> that carts send the coco. Kind of like a carrier detect, but I guess not.
> The only option that leaves is to default to all drivers off and let the
> user set the driver and if they get it wrong... thier fault :-) It's not
> really a major problem, just one I'm trying to avoid.
>
> Thanks
>
>
> Music from the Tandy/Radio Shack Color Computer 2 & 3
> https://sites.google.com/site/dabarnstudio/
> Bill Pierce
> ooogalapasooo at aol.com
>
>
>
>
> -----Original Message-----
> From: camillus Blockx <camillus.b.58 at gmail.com>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Wed, Jul 4, 2012 6:55 pm
> Subject: Re: [Coco] Detecting carts
>
>
> Well you always have to come back to normal state, if you allow to come out
> f the loop the software will hang again, because it did not find the card,
> nd you are back to square one. Sins you need the card you would not go on
> ith the program anyway..
> lso timers in assembler takes a bit of code and maybe you just do not have
> he space for it in rom.
>
> ba
> On Wed, Jul 4, 2012 at 3:35 PM, Arthur Flexser <flexser at fiu.edu> wrote:
> > How about putting a timer into the "close" routine, so that if it
>  doesn't return in the normal way within a certain time, it gives up
>  and assumes the cart isn't present?
>
>  Art
>
>  On Wed, Jul 4, 2012 at 12:00 PM, Bill Pierce <ooogalapasooo at aol.com>
>  wrote:
>  >
>  > Hi guys,
>  >  Anyone know of an easy way in "C" (or M/L sub) to detect the presence
>  of certain catridges?
>  > Here is what I'm trying to do.
>  > I need to be able to detect the presence of the Gleneside Midi Pak (100%
>  Speech Systems Comp) .
>  > My problem is, if I run Midi software and and this cart is accessed but
>  not present, on exit the program hangs due to trying to close the port.
>  > The cart is being accessed directly, not through a driver.
>  > If this could be done, I need a way to detect:
>  >
>  > Gleneside Midi Pak (or Speech Systems Midi Pak)
>  > Colorchestra Midi Pak
>  > Speech Systems Stereo Pak
>  > RS Speech & Sound pak.
>  > And possibly the Intercomp Sound Midi pak.
>  >
>  > I'm running Nitros9, Coco 3, Disto 1 Meg, Grey Multi Pak Interface (pal
>  fixed) with Drivewire4
>  >
>  > Also, what is the easiest way to detect if Drivewire is is installed?
>  (Os9 side)
>  >
>  > Thanks
>  >
>  >
>  > Music from the Tandy/Radio Shack Color Computer 2 & 3
>  > https://sites.google.com/site/dabarnstudio/
>  > Bill Pierce
>  > ooogalapasooo at aol.com
>  >
>  >
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