Re: Looking for a Micro SCI disk controller

[mjmahon@aol.com (Michael J. Mahon)]

Wayne Stewart wrote:

>Michael J. Mahon wrote:
>
>> That's a good question!
>> 
>> Otherwise, the card seems to be pretty similar to the MicroSci
>> card, and the Disk ][ Controller, minus the state machine data
>> separator.
>> 
>> Perhaps it could not be used to boot a system, but only to
>> control disks after booting from another controller...
>
>No, the card will boot up a disk. Can't tell it from a Disk II
>card without pulling the cover off the Apple II.

Then there's a boot ROM hiding somewhere on that card...  ;-)

As you no doubt know, the early bootstrap stages read from
disk call back into the slot ROM to read additional sectors,
so it's gotta be there.

-michael

Check out amazing quality sound for 8-bit Apples on my
Home page:  http://members.aol.com/MJMahon/