10 Aug
2000
10 Aug
'00
2:40 a.m.
ajp166 wrote:
Look into a m7941 (DRV11) parallel line unit sa that
give you lots of bits for
parallel IO. Another would be the M7950 DRV-11B general purpose DMA
interface (also a parallel IO). The latest one was the DRV-11J (M8049)
and that has enough lines to interface anything (32 in and 32 out).
The later boards could possibly even be enough to fake the IDE interface
directly. Even an old clunky 120mb WD2120 would seem large!
Jerome Fine replies:
Any ideas as to how the DRV11-J (M8049) might need to be programmed
to interface to an IDE drive? Any could that become a device driver?
I have heard that there is a possibility of using an IDE as the disk drive
behind a controller that would be able to use the HD(X).SYS device
driver that John Wilson makes use of in the E11 emulation software.
In addition, it has been suggested that even a SCSI drive might be OK
as well. What might be involved in producing such an animal? While
HD(X).SYS is far too simple a concept to use in an OS that requires
multi-tasking, like RSX, for RT-11 it seems like the perfect solution.
Unfortunately, I have so little hardware knowledge that I do not know
even what questions should be asked.
Sincerely yours,
Jerome Fine