Re: Pet basic-2 save different than C64?

From: Francesco Messineo <francesco.messineo_at_gmail.com>
Date: Mon, 6 Feb 2017 19:35:36 +0100
Message-ID: <CAESs-_zvC7DsVOdSoG1uofX3uyYQoSN2B0iPpYAN=Tfs7o-4QA@mail.gmail.com>
Hi Ethan,

On Mon, Feb 6, 2017 at 7:24 PM, Ethan Dicks <ethan.dicks@gmail.com> wrote:
> On Mon, Feb 6, 2017 at 10:32 AM, Francesco Messineo
> <francesco.messineo@gmail.com> wrote:
>> Hi all,
>> some more fun with the 3032 today...
>> Today I was trying the same procedure with the PET, typed the basic
>> loader in, saved it to a couple of tapes, so I don't have to type it
>> anymore, loaded the machine language non relocatable program with it,
>> then loaded the basic relocatable version....
>
> The save and load routines in all PETs do work slightly differently
> than the VIC-20 and C-64.  In operational terms, I always saved
> anything that was not a plain-old BASIC program from TIM.  This
> included ML fragments in the Cassette #2 buffer (at $033A) and stuff
> in upper memory, and any BASIC-ML combo programs.  SAVE works when
> it's _just_ the visible lines of BASIC.  Similarly, LOAD does not do
> relocation, and LOAD "",1,1 doesn't do _exactly_ the same thing on a
> PET as on a VIC-20 or C-64.
>
> Short answer is if it's not BASIC, use TIM to save it.  LOAD will load
> it back in to wherever it was saved from.  No need for the equivalent
> of LOAD"*",8,1 on a PET.

thanks a lot for the explanation! Indeed I'm going to try to save it
from the TIM later. I hope to have good results fiinally!
I think either the C2N I'm using or the tapes have some issues.
Writing anything on a fresh part of a tape works reliably. Ovewriting
something results in nothing read back.
I've found a similar belt to restore a second C2N, so I'll see if this
one works better.

Does anyone have a good suggestion to restore the gold-plated edge
connectors? The ones on this pet are badly worn out, the gold plating
has gone away on large parts. The connection is reliable enough with
the gold-plated connectors (like the one I built the PC64 cable with),
but the original C2N connector is already too unreliable to start with
:)
I've had good results on the tape#2 connector on my 3032 which isn't
gold-plated but just tinned. The tape#1 is unreliable in this
semi-gold-plating with holes state.

Thanks
Frank

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Received on 2017-02-06 19:01:33

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