Re: two questions

[e p chandler <epc8@juno.com>]

On Nov 12, 10:07 am, "digi" <d...@home.nl> wrote:
[snip]

> Do you know software, or information about the apple//e
> cassette port?
>
> <purpose is to use the cassette in and out ports of the apple to transfer
> data
>  between the apple//e and an ordinary linux machine>
>
> i might link the cassette ports towards the sound card of the linux machine
> directly, or use a memo recorder to make sure that nothing blows out.
>
> <i probably need 65C02 assembly routines to tranfer a disk towards the
> memo recorder from the first track to the last, and
>  some c code for linux how to convert /dev/audio data towards a decent
>  .DSK image>
>
> also, when i issue a LOAD an the apple//e <i tried several apple//e's>
> it Beeps and ERRs twice, and no data is transferred.
>
> do you know how this may have happend ans/or how to fix it?
>
> kind regards,
>
> digi

Look for ADT-Pro. It allows disk transfers over a pair of audio
cables. The serial port version is much faster - if you have the
proper hardware.

The details of the routines are documented in the "Red Book" -
available on line. The ROM routines either read or write a range of
bytes.

LOAD or SAVE calls the ROM routines twice, once for what is
essentially the starting address and ending address (+1?) and the
actual program image.

A more primitive file transfer program, "aladt" sends a memory image
to the apple over the cassette port. This only needs one cable. It is
possible to send the image of an Applesoft program back to an Apple 2
by

1) playing back a recording
2) using aladt - send the program header first, then the program
image. [Sorry, I don't want to do that again or try to reconstruct
it.]

But in the long run using ADT-Pro with a "super serial card" is best.
Between Windows and my 2e, I usually transfer a 5 1/4" disk in about
30-40 seconds.

--- elliot