Re: DOS 3.2 controller ROM

[christer@cs.umu.se (Christer Ericson)]

In <CuD5wn.3tB@cs.umu.se> I wrote:

>Is there someone here who has the equipment to make a dump of the
>contents of the state machine ROM, for both DOS 3.2 and 3.3? I would
>be _very_ interested in these. Yes, I know that Beneath Apple ProDOS
>has an appendix on the DOS 3.3 state machine ROM, but since table D5
>and figure D2 don't match, I'd rather have a dump to dig into myself...
>Also, BAPD doesn't mention anything about the DOS 3.2 state machine --
>it would be really interesting to compare both of them.

Gosh! How silly can one get? Of course I have the machinery to dump
that ROM, and so does everyone else! I just realized that it is as
simple as switching the P5 and P6 ROM on the Disk II controller card
and voila, the state machine code appears where the boot code
normally pops up (eg $C600-C6FF for slot 6).

To save it to disk, it helps having two controller cards, of course! :-)

(If someone is interested, the dump can be found by digging through
my http page. I'm still interested in a DOS 3.2 P6 ROM dump though.)


Christer Ericson ---- tel: +46-90-16 67 94 ---- fax: +46-90-16 61 26
Internet: christer@cs.umu.se ---- http://wwwtdb.cs.umu.se/~christer/
Dept. of Computing Science, University of Umea, S-90187 UMEA, SWEDEN