Cameron Kaiser wrote:
> All 8-bit Commodore disk drives have CPUs, period, IEEE or no. Some older
> drives have two, one for "IP" to accept commands over the Commodore serial
> bus and one to act as FDC. 1541s and later drives have "schizophrenic" CPUs
> that alternately switch between IP and FDC modes on interrupts. MFM-capable
> drives like 157xs and 1581s have a special FDC (usually WD-1770 or 1772-type
> controllers).
I was at one time hoping to pick up a Commodore Disk cheap for floppy
drive for a computer I am building but never did because I did not have
the docs about the interface. 5 1/4 Single Density Single Sided drives
did not help either.Is the C64 drives the only external drives built
other than the Color Computer drives by Radio Shack?
Ben Franchuk.
BTW It is too bad OS/9 was a closed source OS.
--
Standard Disclaimer : 97% speculation 2% bad grammar 1% facts.
"Pre-historic Cpu's" http://www.jetnet.ab.ca/users/bfranchuk
Now with schematics.
Received on Thu Nov 01 2001 - 18:35:13 GMT