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Re: Address of second TMSCP controller
On Tue, 26 Jan 2021 at 15:20, Anders Magnusson <ragge%tethuvudet.se@localhost> wrote:
> Den 2021-01-26 kl. 16:05, skrev Paul Koning:
> >> I imagine you could add a second mtc line to your config at whatever
> >> address you put your Dilog card at. ISTR that DEC had a bunch of rules
> >> for such addresses - the phrase "floating CSR space" comes to mind -
> > Right. In the DEC rules, this is a "first unit fixed, rest float"
> > device, just like the MSCP disk controllers. The float CSR rank is 30.
> > Does NetBSD do the floating CSR address algorithm? If not, yes, just
> > pick some address and tell the OS what it is.
> No, NetBSD do obey the floating CSR spec.
> This code is actually from 4BSD which didn't either.
Is it just a matter of adding mtc* lines to the config for the 2nd and
subsequent floating address - or is there some risk of false positives
if a different device is at that address?
GENERIC already has a couple of devices with alternate CSRs (I don't
know if they are alternates on a given machine, or if some machines
put their initial device at different CSR addresses)
uda* at uba? csr 0172150 # UDA50/RQDX?
uda* at uba? csr 0160334
qe* at uba? csr 0174440 # DEQNA/DELQA
qe* at uba? csr 0174460 # DEQNA/DELQA
to save people the effort of clicking a link
https://nxr.netbsd.org/xref/src/sys/arch/vax/conf/GENERIC#229 :) - the
remaining current values from GENERIC are:
#il* at uba? csr 0164000 # NI1010
mtc* at uba? csr 0174500 # Tape MSCP ctlr
ts0 at uba? csr 0172520 # TS11/TSV05 tape.
#qd0 at uba? csr 0177400 # 4- or 8-bitplans color graphics
#qv0 at uba? csr 0177400 # Monochrome graphics
de* at uba? csr 0174510 # DELUA/DEUNA
qt* at uba? csr 0174440 # DELQA-PLUS in Turbo mode
dhu* at uba? csr 0160440 # DHU-11
#dmf* at uba? csr 0160340 # DMF-32
dz* at uba? csr 0160100 # DZ-11
dl* at uba? csr 0176500 # DL-11
rlc* at uba? csr 0174400 # RL11/RLV11 controller
rl* at rlc? drive? # RL01/RL02 disk drive
rfc0 at uba? csr 0177170 # RX01/02 controller
rf* at rfc? drive? # RX01/RX02 floppy disk drive
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