Hmm what is weird is that when I look at the disktab from any BSD and compare it to the table in pdp11_rq.c they don't agree....
Take something like the RA60.... in pdp11_rq we have: #define RA60_DTYPE 13 /* SDI drive */ #define RA60_SECT 42 /* +1 spare/track */ #define RA60_SURF 6 #define RA60_CYL 1600 /* 0-1587 user */ #define RA60_TPG RA60_SURF #define RA60_GPC 1 #define RA60_XBN 1032 /* cyl 1592-1595 */ #define RA60_DBN 1032 /* cyl 1596-1599 */ #define RA60_LBN 400176 /* 42*6*1588 */ #define RA60_RCTS 1008 /* cyl 1588-1591 */ #define RA60_RCTC 1 #define RA60_RBN 9528 /* 1 *6*1588 */ #define RA60_MOD 4 #define RA60_MED 0x22A4103C #define RA60_FLGS (RQDF_RMV | RQDF_SDI) and in Ultrix... ra60|RA60|DEC RA60 Removable:\ :ty=removable:ns#42:nt#4:nc#2382:\ it specifies 2382 cylinders... Although they both agree to 42 sectors.. Looking at the ra80: ra81|RA81|DEC RA81 Winchester:\ :ty=winchester:ns#51:nt#14:nc#1248:\ type sec surf cyl tpg gpc RCT LBNs RA81 51(+1) 14 1258 14 1 2856 891072 Which is 'closer'.... While looking up the RP06 I find this: pdp11_rp.c #define RP06_DTYPE 3 #define RP06_SECT 22 #define RP06_SURF 19 #define RP06_CYL 815 #define RP06_DEV 020022 #define RP06_SIZE (RP06_SECT * RP06_SURF * RP06_CYL * RP_NUMWD) and in the disktab: rp06|RP06|DEC RP06:\ :ty=removable:ns#22:nt#19:nc#815:\ Which do agree.... I suspect I'm missing a *LOT* when it comes to how these are mapping...? FWIW they list a ra73 disktab here: ra73|RA73|DEC RA73 Winchester:\ :ty=winchester:ns#70:nt#21:nc#2667:\ :pa#32768:ba#8192:fa#1024:\ :pb#190464:bb#4096:fb#1024:\ :pc#3920490:bc#8192:fc#1024:\ :pd#536260:bd#8192:fd#1024:\ :pe#536260:be#8192:fe#1024:\ :pf#536262:bf#8192:ff#1024:\ :pg#2088476:bg#8192:fg#1024:\ :ph#1608782:bh#8192:fh#1024: I don't know if you could even trust it's 70 sectors, 21 tracks, 2667 cylinders. On a whim google pulls this: http://groups.google.com/group/comp.sys.dec/browse_thread/thread/1db2c05e66a47320/efa324f0ce533455?hl=en&ie=UTF-8&q="RA73"#efa324f0ce533455 <http://groups.google.com/group/comp.sys.dec/browse_thread/thread/1db2c05e66a47320/efa324f0ce533455?hl=en&ie=UTF-8&q=%22RA73%22#efa324f0ce533455> it's some usenet thing from 2001... I suppose you could email everyone in the thread asking if they still have an ra73, and if they can find the geometry...? On Sat, Mar 27, 2010 at 12:09 AM, Bruce Claremont < bruce.clarem...@migrationspecialties.com> wrote: > Take a look at the RAUSER option. That should resolve your drive size > issues. > > > At 09:40 AM 3/26/2010, Armistead, Jason wrote: > > Content-class: urn:content-classes:message > Content-Type: multipart/alternative; > boundary="----_=_NextPart_001_01CACCFA.B37AC702" > > According to > > * http://simh.trailing-edge.com/vax.html > * > and > > * http://simh.trailing-edge.com/pdp11.html > * > Both mention the RA73, which is a 2Gb drive (that I’d really love to use > with SIMH !) > > I am trying to run the MicroVAX 3900 flavor of SIMH, but when I try to put SET > RQ2 RA73 in my VAX.INI file I get an error > > parameter > > vax.ini> set rq2 ra73 > > Non-existent parameter > > And I end up with a 159 Mb RD54 drive instead when I boot VMS and do a SHOW > DEVICE DUA2: /FULL > > According to both the VAX and PDP11 pages on the SIMH site, the RA73 is > listed as supported, but when I dig into the SIMH source code and look at > PDP11_RQ.C, in the it has an X next to it which means not implemented. > > What’s this all mean ? > > Is it just a documentation bug, and those web pages shouldn’t mention > RA73s ? > > Is there a technical/software reason why SIMH doesn’t support these drives > ? > > Is no-one able to fill in the question marks in the RCT column of the table > in PDP11_RQ.C which also has blanks for RD32, RD33 and RA70 drives ? I > managed to figure out that RCT stands for replacement and caching table (a > reference in the VMS I/O User’s Reference Manual to DEV$M_RCT). We ought to > strive to improve the comments in the code to expand this (I found no > > On a side-note, the PDP11 web page shows the capacities of these drives as > a range. The VAX page lists the capacities as 12KB for VAX 780 and > 200-1960MB for VAX 3900. The 12KB entry for VAX 780 seems like a typo > perhaps. > > Regards, > > Jason > _______________________________________________ > Simh mailing list > Simh@trailing-edge.com > http://mailman.trailing-edge.com/mailman/listinfo/simh > > > Mr. Bruce Claremont, Software Preservationist > Migration Specialties International, Inc. > 217 West 2nd Street, Florence, CO 81226-1403 > bruce.clarem...@migrationspecialties.com > www.MigrationSpecialties.com > <http://www.migrationspecialties.com/>+1 719-371-1711, Fax: +1 > 888-854-3417 > > *Continuity in Computing*: Founded in 1992, Migration Specialties offers > modern solutions for legacy hardware & software. Look to us for VAX, Alpha, > HP1000, PDP-11, and DG Nova & Eclipse replacement options. Visit our web > site for more information. > > _______________________________________________ > Simh mailing list > Simh@trailing-edge.com > http://mailman.trailing-edge.com/mailman/listinfo/simh >
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