Re: Apple IIe boot question

["Bill Garber" <willy46pa@comcast.net>]

Thank you David for the in-depth explanation.
Now I know that this is ok and I can act accordingly.

Bill @ GarberStreet Enterprises };-)
Web Site - http://garberstreet.netfirms.com
Email - willy46pa@comcast.net

> A ][+ or unenhanced IIe will only automatically boot from a 5.25"
> controller card, or from another interface card which has the same ID
> bytes.  (You can manually boot from other disk controllers using PR#n -
> if necessary, press Control-Reset to get to the BASIC prompt first.)
>
> The ID bytes checked by the ][+ and unenhanced IIe are at $Cn01, $Cn03,
> $Cn05 and $Cn07.  They must contain the values $20, $00, $03 and $3C, or
> the autostart firmware will not recognise the card as bootable.
>
> Disk controller cards which support the SmartPort firmware interface
> (including the Liron card, SuperDrive card, standard slot memory
> expansion cards and Apple SCSI cards) contain the value $00 in location
> $Cn07, so they won't boot automatically in a ][+ or unenhanced IIe.
>
> In the enhanced IIe and IIgs (and the IIc in principle), the autostart
> firmware only checks the first three ID bytes, allowing SmartPort
> interface cards to boot.
>
> --
> David Empson
> dempson@actrix.gen.nz


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