Xerox

From: Hans Franke <Hans.Franke_at_mch20.sbs.de>
Date: Thu Dec 17 11:50:04 1998

> ::Same for Apple, but there is no difference between REL and SEQ from
> ::the viewpoint of the system sins SEQ is just a special case of REL.

> Are you sure? RELative files have both a side sector stream and the
> data stream (the side sector stream used for storing record indexing
> information of records in the data stream). They're handled by different
> portions of the 1541 ROM, so I'm pretty sure one is not a subtype of the
> other.

But it can be seen as one. Apple DOS stores files thru a block
list, where a bit is set for every allocated block within the
'file address space'. So if I open a random text file and put
a 128 Byte record into position 1000, only two blocks are written
onto the disk. THis structure is the same for sequential written
files - just there are no unallocated blocks.

Pleas correct me if my memory regarding CBM files (or Apple files)
has some holes - I'm about to develop a influenza right now.

Gruss
H.

--
Ich denke, also bin ich, also gut
HRK
Received on Thu Dec 17 1998 - 11:50:04 GMT

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