Re: ADT Question, was: Disk ][ drives not working

[Paul Guertin <pg@sff.net>]

On Mon, 05 Jul 2004 13:13:21 GMT, Alistair J Ross <mailat@alirossdotco.uk>
wrote:

>     The transfer of any DSK image I try to send is fine up until I get 
>     the following error on the PC side:
>     Track $02, sector $04: bad CRC
>     which sounds like a dodgy image, but I've tried loads of different images
>     and they all come out the same, any ideas on what could be wrong?

Bad CRC means a problem in transmission, not a bad image. CRCs
are generated when transferring the image, they are not part of
the image file itself.

Does the error always occur on Track 2 sector 4? If so, I bet
it's a memory problem on your Apple.

>     On point number two, sometimes, the machine just plain wont start (lines
>     down the screen on boot, or it will just hang at some arbitary point).

This also points to flaky memory.

>     Usually rocking the language card on slot 0 helps bring it back to life.

ADT doesn't use language card memory. Try removing the language card
and try transferring files again. If it works, the problem is with
the LC. If not, it's with the motherboard RAM.

>     3) I saw that Kings Quest I, II and III are available for Apple II, which
>     is great cause I loved all the early sierra AGI games. However, it's in
>     .nib format. After reading the FAQs, it seems that this is just an exact
>     bit for bit disk image - however, ADT says that this is not a 140K image
>     and wont touch it (indeed, the image is 232960 bytes per disk image). How
>     can I transfer these images to the Apple ][

Read the FAQ on Super Saltine Transcopy. In brief, you use SST to make
two .dsk images, then ADT them over to the PC and recreate the .nib file
there. I've never done it but others have, and it sometimes works.

Paul Guertin
pg@sff.net