Re: Apple model history?

[Randy Shackelford <shack@onyx.southwind.net>]

Paul Guertin <pg@sff.net> wrote:

:> > One thing about ProDOS, or rather Basic.system -- how come there is
:> > no equivalent of the "cd .." command, to go up one level in the
:> > directory hierarchy? I've always found that odd.
:> 
:> There is an equivelent of the cd command. It's called PREFIX.

: Yes, but there is no equivalent of "cd .." with PREFIX. E.g., if I
: am in /HD/PERSONAL/LETTERS/JOE and want to see letters to Bill, I
: have to type PREFIX /HD/PERSONAL/LETTERS/BILL whereas in Unix I
: would simply type "cd ../bill".

I expect that directory walking would have been tough to implement in the
amount of memory available to either the kernel or BASIC.

:> > DOS 3.3 having a two-letter command for a seldom-used function (FP)
:> Is that really included with plain-vanilla DOS 3.3? I always thought that
:> the FP/INT command was an add-on thing.

: FP and INT have always been part of DOS 3.3, to the best of my knowledge.

Exactly. How else would you swap between integer and Applesoft?
-- 
Offsite mail to this host gets nuked.