HELP with Apple II+ booting!

From: Kai Kaltenbach <kaikal_at_MICROSOFT.com>
Date: Thu May 29 17:18:56 1997

Still no joy on the Apple II+ boot problem.

The machine appears to definitely have 48K RAM; at least the NEC chips
have "416" on them. Any way I can tell in BASIC?

I have 3 disk controllers and 3 drives. The disk controllers have 2
different ROM versions; one is half copyrighted 1979 and half 1981,
while the other is all 1981. The card model is 650-X104. There's
another ID number, one is 820-0006-02 and the other card is 820-0006-D.

Help!!!!

Kai

> ----------
> From: Eric Fischer[SMTP:eric_at_fudge.uchicago.edu]
> Reply To: classiccmp_at_u.washington.edu
> Sent: Tuesday, May 27, 1997 10:02 AM
> To: Discussion re-collecting of classic computers
> Subject: Re: HELP with Apple II+ booting!
>
> kaikal_at_MICROSOFT.com says,
>
> > My Apple II+ will boot a diskette called the "Zardax Utilities" but
> it
> > won't boot anything else.
> ...
> > When I put in a different bootable diskette, I get "APPLE II" on the
> > screen, and then after a moment's pause, a bunch of garbage
> characters
> > are added.
>
> My best guess is that maybe you have a 13-sector (DOS 3.2) disk
> controller and one 13-sector disk (the one that works), and the
> rest of your disks are 16-sector so the 13-sector controller
> doesn't know what to do with them. Unfortunately I can't remember
> where to peek to find out the DOS or controller version number,
> so I don't know how you could verify this.
>
> The other alternative is that if your Apple II+ has less than 48k
> of memory, the other disks may be expecting a 48k system and loading
> DOS into a part of memory that doesn't exist on your computer. The
> Zardax Utilities disk may be one with a relocatable DOS image on it
> (a "master" disk) created with "MASTER CREATE" and the rest are just
> plain fixed-address disks. This would certainly explain why random
> junk was getting loaded into video memory instead of where it belongs.
>
> eric
>
Received on Thu May 29 1997 - 17:18:56 BST