Re: Ideas for creating disk images of Twiggy disks...

From: Shirl <shirlgato_at_email.domain.hidden>
Date: Sun, 03 Feb 2008 14:12:18 -0700



Theory #2 is more difficult. It would be done without any custom hardware, though.

I read on Ray's site that the Lisa has ROM code to read blocks from the disk. It also has a serial port. I know it also has a ROM monitor. I'm assuming you could execute arbitrary code that you manually key in, using the monitor, just like on the Apple-1 and II... I'm thinking, read the blocks and send them over serial. <<<

I have a feeling that interfacing a Twiggy drive to an Apple II would be rather difficult. I think your idea of using a Lisa 1 and its boot ROM to read Twiggy disk blocks and send them to an external computer via the Lisa's serial port would be the most workable solution.

I think it would be rather straightforward for someone with 68000 assembly knowledge and Lisa boot ROM knowledge to do this. There should be 1 or 2 people on this list with such knowledge. They would obviously need to send this "program" to someone with a Lisa 1 who also has as many of the Lisa 1 Twiggy disks from Apple (e.g. LisaWrite) for this to work.

I think it would be a good thing to have the Lisa 1 Twiggy disks as disk images for emulation purposes.

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