Re: Emulator discrepancies (was DMA'ing in Commodore 64 for developing purposes.)

From: Bill Degnan <billdegnan_at_gmail.com>
Date: Wed, 15 Jun 2022 12:49:12 -0400
Message-ID: <CABGJBuczvFFk17USyy--rhf2wtaVq1CW5yEio7t78i+m-zoPhw_at_mail.gmail.com>
On Wed, Jun 15, 2022 at 12:32 PM <groepaz_at_gmx.net> wrote:

> Am Mittwoch, 15. Juni 2022, 18:08:51 CEST schrieb tokafondo:
> > > That btw i'd call a myth these days :) Emulators have become crazy
> > > accurate - very seldomly you stumble about some discrepancy.
> >
> > Sometime ago Ms Sarah Jane Avory told about having that issue while
> coding
> > one of its games. Something that worked in the emulator but not in the
> real
> > thing. But as you say, it's a case in a million.
>
> Yeah, Well. Even then - these days i'd like to know what exactly the
> problem
> is before i am willing to conclude it is actually an emulator problem :)
> There
> are actually quite some common situations that may look like it at a first
> glance - but actually might happen the same way with real gear.
>
>
>
I'd like to clarify my use of an in-circuit emulator, which is not an
"emulator" of a C64.  It's just a CPU emulator. You literally plug the
in-circuit emulator into the 6502 slot and run the cable into the hardware
unit.  The hardware unit has a serial interface that allows you to step
machine instructions, load programs, move/inject/change values within a
block of RAM, take snapshots of RAM and save the log session as a text
file, etc.
Bill
Received on 2022-06-15 19:01:30

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