Re: How to transform a Disk II card to handle 13-sec?

[vladitx <vladitx@nucleusys.com>]

On Feb 10, 10:02 pm, demp...@actrix.gen.nz (David Empson) wrote:

> I don't recall whether it has any issues writing in 13-sector format,
> such as different timing tolerances which might cause issues if the disk
> was subsequently read on a standard 13-sector controller.

I don't remember anything, too, but the "write" part of the sequencer
is dead simple (shifting out a bit and NOPs), so I'd be surprised if
it changed at all.

> Anyone know offhand which of P5/P5A and P6/P6A is the firmware ROM and
> which is the logic state sequencer? (My "Inside the Apple IIe" is still
> packed in a box after moving house.)

I'd gamble:
P5 - sequencer
P6 - bootstrap