Re: Deep Thoughts

[murph@apple.com (Jim Murphy)]

In article <jmk3.737313028@crux1.cit.cornell.edu> Jay Krell,
     jmk3@crux3.cit.cornell.edu writes:
>>You should however be able to use approach B if you have a VOC installed,
>>because you have two video buffers (one in bank $E0 and one in bank $E1).
>>I started work on it once, but gave up - it had to be under P8 because
>>you can't use the $E0 memory when in GS/OS, and who would want it after
>>all.
> 
> Todd PW has worked on this and brought up the memory problems on GEnie.
> Matt D got into the discussion a bit too; I think he said they would
> look into making this easier in 6.0.1. I believe Todd said a P8 pre-boot
> was necessay, but then you could work under GS/OS. You can allocate the
> memory you need with an ID with master ID 0 and the memory manager won't
> dispose of it when you reboot.

     Yes, we are aware of the difficulties in using this mode, but it has
never been supported by any of the system software (since the card was
released in 1988), and we have made no changes to make it so in System 
6.0.1. We consider it a compatibility risk to attempt to make the system
more friendly in regards to this area of memory, and frankly, this is the
position we must take with a lot of changes we would like to make.

     Jay, please remember that Matt works in Developer Technical Support -
he's not an engineer. However, you keep attributing engineering decisions
to him and this is unfair for both us (A2CE) and Matt.


Jim Murphy        Apple II System Software Engineer        murph@apple.com

"...never quite said what I wanted to say to you,                 The Cure
  never quite managed the words to explain to you..."             Untitled