Re: DOS 3.2 controller ROM

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

In <31nseg$1o4@pith.uoregon.edu> nparker@cie-2.uoregon.edu (Neil Parker) writes:

>>1) Both the boot and state machine ROMs are different between the 3.2 and 3.3
>>   controllers, though they're all the same ROM (a 74S471-type) part -- a
>>   fuse-link programmable chip.
>
>And yes, it is just a simple ROM swap...all you need to change are the two
>ROM chips.

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.


Christer Ericson --- Internet: christer@cs.umu.se --- tel: +46-90-166794
Department of Computer Science, University of Umea, S-90187 UMEA, SWEDEN