18 Dec
2001
18 Dec
'01
3:12 p.m.
Allison wrote:
It's possible to find WD FDC drivers around but
they will be very machine
specific more often than not.
But then I find 6800/6809 code more readable than
"You Know Who"
This will be simple polled loop with interrupts disabled regardless
of what chip I use. I would love to have had DMA but I ran out resources
for it. In fact DMA is rather messy as I don't tri-state the address bus
and would have to stop the CPU for a free memory cycle. If I was doing
this
on a I/O card I most likely would have a sector buffer their rather than
dma.
Allison
--
Ben Franchuk --- Pre-historic Cpu's --
www.jetnet.ab.ca/users/bfranchuk/index.html