Tom Greene wrote:
> On Aug 27, 11:30 pm, David Schmenk  wrote:
>> VM02 update: This is a second alpha release.  I am looking for a
>> particular configuration to test with.  I have formalized a device
>> driver interface and written some test drivers for console, mouse, and
>> the super serial card.  The serial driver is stubbed out, but I have
>> been spending a lot of time with the mouse card and IIc mouse
>> implementation.  Boy, have I learned a lot.  The mouse card is quite a
>> piece of work.  They bundled up just about every Apple II trick into one
>> card.  I now have VBL interrupts updating the time base so now
>> operations like sleep() actually work for the correct time (even with
>> accelerators).  As a side benefit, keyboard input is very responsive (as
>> long as you can't type 60 characters/second).  However, due to the
>> vastly different implementations across the card and IIc varieties, I
>> want to make sure I have it right before moving ahead.
>>
>> http://schmenk.is-a-geek.com/tarfiles/VM02ALPHA2.DSK.ZIP
>>
>> is the disk image.  It doesn't have all the demos of the past releases
>> (they should all work) except for HELLOWORLD, the multi-threading demo.
>>    This won't work on emulated mouse cards unless it emulates the VBL
>> interrupt; you will have to try it on real hardware with a mouse card or
>>   a IIc/IIc+.  If you don't have a mouse card, it will fall back to the
>> software timing and run fine.  You will know it is getting VBL
>> interrupts due to the very annoying 30Hz buzz.  I'm looking to see if
>> the HELLOWORLD demo bounces the text across the screen and exits cleanly
>> when ESC is pressed.
>>
>> If anyone can run this on real hardware with mouse card or a IIc, I
>> would really like to get feedback.  I have currently tested on a II+.
>> enhanced IIe, and a 3.5 drive ROM IIc.
>>
>> If this is successful, I will finish the serial card driver and put
>> together a simple terminal program capable of 9600 baud (without
>> dropping characters), written in Java, for the beta release.
>>
>> Thanks for everyones help,
>>
>> Dave...
> 
> I tried it out on a couple of my IIc's... on the original "255" ROM
> and the memory expansion "3" ROM, it runs fine for about 30 seconds,
> then the text freezes and it stops resonding to keystrokes (but the
> buzz continues). On the IIc+ it ran for a few minutes with no apparent
> problems.
> 
> Tom

Thanks Tom-

Interesting. Usually the buzz stops too. This will be more of a 
challenge than I thought :-(

Dave...
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