Re: 1571/1581 Sources: Macro WDTEST inserting NOP before reading WD177x status register / writing command register

Right. Woz managed to create a floppy disk interface cheaper than anyone
else which was more tollerant than everyone else, which allowed them to
use reject disk drive mechanisms.

I'm not particularly an Apple fan, but they shipped a disk drive for the
apple 2 before commodore had a working drive for the pet and it was
cheaper to build.

Having to be cycle accurate when accessing the disk was Apple's problem,
as they provided the DOS. You end up hitting the same problems trying to
write fast loaders on the 1541.

On 18/03/2022 05:28, Jim Brain wrote:

> though I think it should be clarified that the hardware limitations
> were in turn fixing something else, cost concerns.