From: André Fachat (afachat_at_gmx.de)
Date: 2008-01-31 18:45:35
Hi Ethan,
on http://www.6502.org/users/andre/cbmhw/ieee488/index.html
you find the lptiec IEEE488 interface. It's using its own
hardware, which is probably prohibitive. But it's also using
the VICE IEEE drive emulation core with a thin hardware
abstraction layer. Maybe you can adopt that for your IEEE488
interface
André
-------- Original-Nachricht --------
> Datum: Wed, 30 Jan 2008 20:13:53 +0000
> Von: "Ethan Dicks" <ethan.dicks@gmail.com>
> An: cbm-hackers@ling.gu.se
> Betreff: Are there any IEEE floppy drive (4040/8050...) emulator projects out there?
> Hello, all,
>
> As part of a project to revive a hacked-on 8K PET board, I was
> thinking about mass storage. I have one of Nicholas Welte's RAM/ROM
> boards here, so I can get around the defective ROM IEEE routines, but
> I don't happen to have a floppy drive with me (for those that might
> not know, I'm at the South Pole, and Winter starts in two weeks, so
> there's no time to ship one here, let alone the cost of moving a heavy
> beast like that). What I am after is something to plug into the PET's
> IEEE port that can emulate a drive up to "B-R" and "B-W" commands.
> For simple loading and saving, I have a C2N232, which will do for 90%
> of things, but there are a few programs (most notably Infocom's
> Z-Machine-based Text Adventures) that do direct block access.
>
> I have an ISA IEEE-488 card here, so one thought was to turn an old PC
> into a floppy drive emulator. It would mount disk image files and
> respond to a subset of CBM DOS commands (SEQ file load/save, "$", B-R,
> B-W...) I'm hoping I don't have to start from scratch, so I'm asking
> if anyone has seen any IEEE drive emulator projects out there and
> could point me to them.
>
> There are a few IEC-bus emulators (1541-III, etc.), but IEEE-488 drive
> emulators seem to be a bit less common.
>
> Thanks,
>
> -ethan
>
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