Re: ADTPro 1.1.2 Released

[Eric Rucker <bhtooefr@gmail.com>]

On Feb 19, 9:34 pm, Polymorph <polymorp...@hotmail.com> wrote:
> As Michael has pointed out, writes to disk while reading from the
> serial port are a no-go. However, a IIgs generally has vastly more
> memory available to it (2Mb+), and therefore I see a possible increase
> in performance by buffering large portions (possibly the whole file/
> image) of the serial transfer in RAM before writing to disk. I would
> expect an increase in overall throughput by not writing out to disk as
> frequently. How much of an increase I'm not sure, but I plan on
> finding out.  :-)
>
> Cheers,
> Mike

In a ROM 3, you're guaranteed to have enough RAM to buffer a whole
3.5" image. (Allowing 44k for ProDOS and the ADTPro program (based on
the 20k buffer (I am right in saying it's 20k, right?)) that gives
1108k of free RAM.)

In a ROM 00 or 01, you're guaranteed to have enough RAM to buffer a
whole 5.25" image. (Allowing 44k for ProDOS and ADTPro, that gives
212k of free RAM.)